Diamond Creek Dental
Joseph Lee, DDS:
Practice Profile Page

Diamond Creek Dental
Joseph W. Lee, DDS

Diamond Bar, CA







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A list of major dental treatments which I offer my patients:

Dental cleaning

White fillings


Inlays & onlays


Clear aligners

Pediatric dental care

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

TMJ treatment

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 9:00 am to 6:00 pm

Tuesday: 10 am to 7:00 pm

Wednesday: 9:00 am to 6:00 pm

Thursday: Closed

Friday: 9:00 am to 6:00 pm

Saturday: 8:00 am to 4:00 pm

Sunday: Closed





Check out what some of our happy patients are saying about us:

Jason C. from Diamond Bar, CA (Source: Yelp)


Dr.Lee is the best! I found Dr.Lee because I had to do a wisdom tooth extraction and the first dentist I went to wasn’t able to do it because half of it was covered by gum, so she referred to an oral surgeon that was super expensive. Also, I spent my first $50.00 for nothing because the dentist couldn’t do anything and still had to charge me for examination. I called Dr.Lee’s office and the receptionist was real nice. They just happened to have an appointment open so I went there right away after calling. Dr.Lee took a look at my wisdom tooth and also took another X-ray which was super high-tech 360 degrees panoramic one and put it up on a large monitor so I could see it nice and clear. He went over the details and told me he could do it for a super reasonable price. (only half of what the first oral surgeon was gonna charge me for). I agreed to do it right away because Dr.Lee seems very honest and professional and he did not push me into doing anything else besides what I was asking for. The extraction was performed the same day and Dr.Lee and the nurse were very patient throughout the whole process. They checked with me periodically to see if I was doing OK or feeling uncomfortable.
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Grace Dacanay (Source: Google)


I’ve been going to Diamond Creek Dental for a year now. Each time I come in, Dr. Lee and his staff take their time to provide a complete exam and explain everything to me. They are very professional and I actually enjoy going to the dentist now. I never have to wait to be seen and the office is super clean. I highly recommend Dr. Lee to anyone in search of a dentist!

Ruth W. from Diamond Bar, CA (Source: Yelp)


Finally, I got my dental implant finished. Because of covid19,it was delayed for months. The doctor is excellent. He is very professional. During the whole dental implant process, I didn’t feel any pain or uncomfortable. He is very efficient and never waste your time. You just arrive on time and they will never let you wait for more than 10 minutes. The clinic has fanatics time management. I should have got dental cleaned but because of the virus, they didn’t provide cleaning. The doctor is very nice so he cleaned my teeth manually without charge anything extra. The clinic is excellent. I wish God bless them!
…… My friend ,she got a tooth extracted In other places,but She said it is very painful. Not every doctor can do the same job……. Previous review: I got one of my back teeth extracted. The doctor is very professional. The whole process takes around 30 minutes. It is very comfortable. I didn’t feel any pain. He extracted my tooth very gently. I didn’t know that the tooth already came out. There was a little bit of blood. Not scary at all. After 2-3 hours,i can eat and talk. After one day I can eat normal food not just liquid. I didn’t feel any pain on the second day. The Doctor did an excellent job.

Merek C. from Diamond Bar, CA (Source: Yelp)


Alright…. two and a half years later, 5 cleanings and a scheduled filling in a month, this place has run the gauntlet and gets the 5 stars in my  book. What I missed in my first experience, the attention to detail and quantitative analysis of how bad my teeth are, has been compensated by the troves of pictures he accumulates from each visit. It has been neat to see the progression in decline in some areas of my oral health, but also areas where improvements have been made. The quality of the pictures he takes, coupled with his breakdown of pictures from one visit to another, are enough to paint a picture of how things are going in the teeth and gum department. The man and his team work hard, and they are good at what they do. I have not had a negative zero experience at his office which, considering it’s a dentist’s office, is actually a positive thing when viewed over an almost three year time span.   That is my new story, and what I am sticking with

Alice Ly (Source: Google)


My friend recommended this place to me after I told him that my regular dentist said I needed 3 fillings done after an already expensive deep cleaning. So I came here for a 2nd opinion, and Dr Lee took x-rays only on the side that the supposed fillings were needed. Turns out that I only needed 1 filling out of the 3 (if I promise to floss and take care of the other 2 to prevent further decay) He also took pictures with a different camera that gave me a better real-world look at the cavities and the areas that I needed to be aware of. (Sometimes you can’t really understand via x-ray so I appreciated the actual in-mouth camera pictures) Dr Lee was thorough, explained his process, and made sure I was comfortable. He also periodically checked with me to see if I needed a break. I hate going to the dentist, but I was very comfortable here. Pricing was also very reasonable and explained well, which was a contrast to my previous dentist. Not to mention the office is very clean, has relaxing cloud/sky lights, and a TV on the ceiling! Also received a first visit goodie bag that contained a floss, toothpaste, toothbrush, teeth whitening kit, and mouthwash that’s perfect for travel 🙂 Dr Lee will be my go-to dentist from now on, even though he’s a bit further away, he has convenient weekend morning hours to fit my schedule (and great restaurants around the area!)

Shuai Y. from Brea, CA (Source: Yelp)

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My husband’s teeth were accidentally knocked out last week. It was pretty late and the dental office was closed already. When Dr. Lee knew our situation, he came to the office at 10:30pm to fix the reattached teeth and add a splint. The treatment was so critical to save the knocked-out teeth!! Now my husband feels much better! We’re so grateful for Dr. Lee’s exceptional and professional service to save my husband’s teeth!! Thank you Dr. Lee!!!

Gracie W. from Irvine, CA (Source: Yelp)


Dr. Lee is hands-down the best dentist I’ve been to. I’ve been coming here for two years and every visit has been great. I’ve had all my wisdom teeth extracted by Dr. Lee and each time was surprisingly painless! I got the bottom two out first, then the top two 6 months later. My bottom teeth were impacted, which is even more complicated, but the whole thing took maybe 30 minutes. I was just numbed and felt no pain at all. Even after the numbing wore off, it was mostly just a dull sore and I had no swelling. In fact, I went to a meeting two hours later and no one could even tell I got my wisdom teeth out because I looked normal and was speaking normally. Dr. Lee also shows you all the x-rays of your teeth so you know what is going on. There were some really small cavities and he pointed them out on the TV in the room so I could see what was going on and what to look out for. I got one filled but the other one was small so he said I could leave it for now and just check on it next time. The cavity filling was fast-maybe 10 minutes. I wasn’t numbed and felt nothing so I was really surprised when the operation was done. He’s very attentive and constantly checks in to make sure everything is okay, making me feel very comfortable. The office is very clean, comfortable and has accommodations like water and Netflix! Each room has two TV’s, one on the wall and one on the ceiling so you can watch while sitting up or laying down. The assistants and receptionists are also very nice and easy to talk to. As a UC student, the paperwork with the insurance USHIP is all taken care of and explained, making the whole experience super easy!

Jennifer Y. from Diamond Bar, CA (Source: Yelp)


My daughter started complaining about a tooth ache Friday night.  She was crying and complaining about the pain.  I knew I couldn’t wait until Monday morning to try and get an appointment so I went on yelp to look up dentists who are open on Saturdays.  I called the emergency line and Dr. Lee informed me that he didn’t know what the schedule was like but would call me in the morning to see when he could see us.  I got a call early the following morning to inform me he could squeeze me in.  I was so relieved!!!  We were first time patients.  He was extremely patient, very thorough.  Office is clean, updated, and the staff was polite, friendly and welcoming.  My husband I decided right then that we will be switching over to Dr. Lee from here on out for our family’s dental care.

Emerald C. from Los Angeles, CA (Source: Yelp)


I came across Dr. Lee’s practice when I started having some pain at a tooth on which I received a root canal (which should not be happening) and I was too afraid to go back to the dentist who did it. Dr. Lee gave me a very thorough check up and provided me with a prioritized treatment plan that was no BS at all. What I especially love about his office that it’s so technologically up-to-date. Procedures are always pain-free and comfortable (esp with those tv’s in the room!) I’ve always had difficulty following up with a primary dentist mainly because they seem very honest during the first appointment and then all of a sudden WHOA SO MANY CAVITIES (that really are not there) AND YOU NEED DEEP DEEP CLEANING and WHITENING blah blah blah. But with Dr. Lee, you can trust he’s not scamming you into doing anything just to bill your insurance. With Dr. Lee, if he recommends something he really means it with no secondary agenda. Plus his staff is super nice and really delivers excellent customer service.

Jenny T. from West Covina, CA (Source: Yelp)


Diamond Creek Dental is located in strip mall on the corner of Golden Springs Drive & Brea Canyon Rd. It’s right next to a foot massage. I am so glad I found Dr. Lee on yelp!  I need alot work done due to not going to the dentist regularly. If you only knew my horror stories from my previous dentist(s). I need a few root canals & crowns, fillings, & deep cleaning etc….  Dr.Lee took his time to explain everything he was going to do. Answered all my questions. So, I had my deep cleaning today. Boy… he’s so gentle & def generous with the numbing. No pain. Just slightly uncomfortable since it was a deep cleaning which is expected. My overall experience with Dr. Lee & his staff has been nothing less than exceptional! PROS: ** They have a flat screen on the wall & the ceiling so you can watch TV or look at your xrays.  They gave me a remote to flip through netflix during my teeth cleaning. ** They have a kuerig, juice & water  in the waiting area. ** Friendly staff ** clean facility  (incl bathroom) CONS: I can’t think of any.  Well, they only take PPO.  So, that is a con for those who only have HMO. I highly recommend Diamond Creek Dental! Dr. Lee is by far the Best dentist I have had so far

Alice L. from Buena Park, CA (Source: Yelp)


My friend recommended this place to me after I told him that my regular dentist said I needed 3 fillings done after an already expensive deep cleaning. So I came here for a 2nd opinion, and Dr Lee took x-rays only on the side that the supposed fillings were needed. Turns out that I only needed 1 filling out of the 3 (if I promise to floss and take care of the other 2 to prevent further decay) He also took pictures with a different camera that gave me a better real-world look at the cavities and the areas that I needed to be aware of. (Sometimes you can’t really understand via x-ray so I appreciated the actual in-mouth camera pictures) Dr Lee was thorough, explained his process, and made sure I was comfortable. He also periodically checked with me to see if I needed a break. I hate going to the dentist, but I was very comfortable here. Pricing was also very reasonable and explained well, which was a contrast to my previous dentist. Not to mention the office is very clean, has relaxing cloud/sky lights, and a TV on the ceiling! Also received a first visit goodie bag that contained a floss, toothpaste, toothbrush, teeth whitening kit, and mouthwash that’s perfect for travel 🙂 Dr Lee will be my go-to dentist from now on, even though he’s a bit further away, he has convenient weekend morning hours to fit my schedule (and great restaurants around the area!)

Sandy L. from Irvine, CA (Source: Yelp)


I chose this location based off a great experience my coworker had.  I am so glad I listened to her advice.  The whole team here was great, and I am looking forward to the dentist’s for once. Location: EASY TO FIND, VERY VISIBLE Appointment Setting Process: EASY Dentist and Assistants: Bedside Manner: 5/5 Skills: 5/5  (100% Painless! WOW.) Technology: GOOD! Very advanced. Space: Moderate and Clean The receptionist was very patient and knowledgeable. She made me feel welcome when I arrived, and didn’t bat an eye when she had to re-check my insurance policy and make a few calls. (While it’s generally expected that a receptionist do that, I often see receptionists who treat patients like they just handed them an annoying chore. In contrast, her behavior was like she enjoyed being helpful and putting me at ease.) The topper was that she gave a super-thorough breakdown of the procedures and costs, and patiently answered all my questions. She routinely checked on me whenever the doctor was with another patient, to make sure I was aware of why and was comfortable during my wait. The dentist assistants were equally helpful and charming. I could tell they were going out of their way to make sure I was having an unstressful, and even enjoyable, experience. I got a TV remote, and chair reclining courtesy. Niceee. Dr. Lee was very skilled as a dentist, and had great bed-side manner.  He gave a full assessment of my teeth/gum condition, and even got great camera shots of everything, so I had a full comprehension.  He gave suggestions, but didn’t pressure me or rush me into anything.  After I figured out my costs and chose the procedure I wanted to do first, I got a cleaning and one cavity filled.  He was good at injecting the numbing agent (I’ve had not-so-great injections before elsewhere, so I know.)  Then the entire process was actually pain-free -a new experience for me. This is the first time I was not scared at all in the dentist’s chair. I really can appreciate the skill here. Thanks again Diamond Creek Dental!

Nancy T. from San Jose, CA (Source: Yelp)


Dr. Lee and his staff are great! Definitely one of the best dentists the I have ever visited. Highlights: -The newest machines for X-rays (felt like I was stepping into a spaceship) -The receptionist Kristy is super nice and professional -TVs in front and on the ceiling of the dentist chair (brilliant! great distraction from the work that’s being done. Why haven’t other dental offices thought of this?). If you’re like me, I hate getting dental work done especially because I have sensitive teeth so being able to take my mind off of it with the TV in front and on the ceiling of the dental chair was very helpful. -Photographs of my teeth to show exactly what Dr. Lee was talking about (again! why hasn’t any other dentist I’ve been to thought of that??!!). -Dr. Lee was very efficient as well. He was able to fit in a cleaning, fix a filling, and grind down my teeth all within an hour. -Additionally, Dr. Lee took the time to make some personal calls to orthodontist specialists for me to make sure that I found the best one that fit into my schedule -The dental office is also conveniently located near Paris Baguette so I could make a pit stop afterwards too 🙂 I live in the Bay Area and come down to visit Dr. Lee at Diamond Creek Dental because it’s just THAT GOOD! Seriously can’t emphasize it enough. Thanks Dr. Lee!

Tess E. from Los Angeles, CA (Source: Yelp)


If I could give a 10 star, I would. If you are scared of the dentist, go here.  I came here for a second opinion and I am very glad I did.  It has been years since I went to the dentist and after having children, I have had many problems.  Going to the dentist is not the most pleasing thing to do and this is the place to go if you have put the dentist off for years. First off, the location is conveniently located in a plaza with a great bakery and restaurants.  The office is clean and trendy. The well detailed x-ray and CT scan of the mouth gave a complete detail of what needs to be done and he explains the issues and solutions very well.  The staff is friendly and makes it like you’ve been going there for years.   Dr. Lee makes it comfortable from the consultation to his work.  I asked him if he gave me a shot yet, and he mentioned he already did as I didn’t feel a thing!  He makes sure and asks if you are okay frequently so he makes sure you are not in pain.  He takes his time and asks if you need a break.  Right away you can tell how much of a compassionate dentist he is.  At the same time you can watch movies while he is working on you. This helps to distract you, rather than staring at a blank ceiling.   Pricing is great and he finds solutions that fit to what you are looking for. I wish I found him years ago.

Tommy Y. from Walnut, CA (Source: Yelp)


If you’re looking for an HONEST, precise, no frills, by the book dentist- look no further. Unfortunately, I had TERRIBLE, unethical work done previously at a neighboring dental office- whom also had high reviews, which I now find extremely questionable (feel free to PM me for details). Dr. Joseph Lee restored my dental health and took the time to show me proper brushing and flossing techniques.  He follows up with me constantly to make sure that I’m ok.  His staff is professional and catering. Can’t recommend him enough!

Frances C. from Pomona, CA (Source: Yelp)

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Dr. Lee is incredibly kind and an awesome dentist! He is very gentle and does his best to make sure you are comfortable. He genuinely cares about his patients and his honesty is highly appreciated in an industry where dentists are often recommending unnecessary work. I’ve had multiple fillings and wisdom teeth extractions here and have always left a happy patient (which is saying a lot when it comes to dental work! (; ). I initially came here for my Peace Corps dental exam and found out I had to have a extremely pricey root canal retreatment done by a specialist. Dr. Lee personally called Dr. Hung regarding my case and helped me attain affordable treatment. I TRULY cannot thank him or Dr. Hung enough for their kindness and generosity. I am just beyond grateful. Additionally, the office staff is always so sweet and they are simply amazing at what they do. Their customer service is truly remarkable and they are a joy to work with. I also love that they have a TV on the ceiling for you to watch when you are in the chair (Netflix and Friends provide great distractions when you’re getting your wisdom teeth out!). I can’t recommend Diamond Creek Dental enough and even referred my own brother here!

T. from Los Angeles, CA (Source: Yelp)


I’ve been searching a “perfect” dentist for many many years! There are probably only few honest dentist left in the world and Dr. Lee is one of the few! I found Dr. Lee’s office on yelp cause all the great reviews, I am not surprise after all with his professionalism and honesty! Before I came here, I went to another 5 star reviews dentist also on yelp evaluating the cost for me, it was totally rip off!! (Hint, also in diamond bar) when I first came to Dr. Lee, he is extremely patient and friendly, his office is very clean and even provide complimentary refreshments for his guests. The cost is very reasonable compare to the other office, Dr. Lee told me even some of my fillings is not the best work but as long as it does the job I don’t need to spend money for new fillings! NO OTHER dentists will do that! Everyone is about MAKING MONEY! Especially dentist! I was so glad he told me that, not even saving me about one thousand dollars, it save me from     unnecessary pain and suffering! Thank you diamond creek dental and Dr. Lee!!! Will definitely let all my family and friends know about this place and make it my lifetime dental office!

Michael (Source: Google)


Joe is the best doctor! I moved further away, but I still come back to see him because he is the best and he cares and he doesn’t do unnecessary procedures. Takes the time to explain everything and go over the photos and xrays. Gives me my options. Tells me the pros and cons of all possible options. Honest and will do the right thing because it’s the right thing to do. He cares. That’s why he’s the best. Thank you Doc!

Gary C. from Rowland Heights, CA (Source: Yelp)


I recommend this place without a doubt and I definitely know you will not be let down. I found this place on Yelp! I live in Pomona and i’m willing to drive to this place. I saw he had all 5 stars so it must be good. I went in a couple of days ago and was extremely satisfied with the service and people there. EVERYONE there was EXTREMELY knowledgeable and HONEST. Dr Lee is one of THE best dentists I have ever gone to. If you don’t believe these posts, you have got to go in to see for yourself. This is my #1 dentist!

Dee C. from Walnut, CA(Source: Yelp)


Great experience!! Very different from my old dentist I use to go to while growing up. I came to this dental office for check up and cleaning since I was well overdue. Dr Lee really pays attention to detail and spends his time and don’t rush you out. Had some fills done while watching TV on the ceiling. I will also be getting my Invisalign soon, I’ve been thinking about it for years. Brought my dad here too said he feels comfortable with Dr Lee, which says a lot since he hasn’t been to the dentist for over 10years~yikes :p. He had 1 implant placed so far but thinking of getting another one

Cheryl H. from Diamond Bar, CA (Source: Yelp)


I have been afraid of dentists until my tooth ache got really serve…happy that I found a great dentist! Quick Response and Appointment After emailing the office, I received response within couple hours when the office was closed due to COVID-19 and was able to get a next day appointment set up. Clean Environment The office was clean from waiting area to the individual rooms. The staffs there would sanitize everything after used (such as x-ray shield) Friendly staff and professional dentist Dr. Lee Staffs were friendly throughout the visit and my root canal was treated right away. Dr. Lee was very careful and made the treatment pain-free. Less Contact I really like how they take appointments one hour apart during COVID-19 which means patient won’t get in contact with other people, only the staffs there and Dr. Lee.

Frances S. from Walnut, CA  (Source: Yelp)


I was having very bad tooth pain under one of my upper crowns. So I called Diamond Creek Dental and was thankfully able to book an appointment the very next morning. Arrived the next day, singed in, and was called in promptly. My dental assistant, Rosie, was very kind and accommodating. I got to turn the TV to The Office which was also on the ceiling during my procedure. I was already feeling much more at ease 🙂 So Dr. Joseph Lee came in shortly after I settled in, and began his diagnosis. He said that there may be one of two outcomes. One was that my crown needed to be shaved down because my bite / constant grind and wear may be what caused the tooth ache, and two was that I may possibly have a root canal issue, for which I’d have to see root canal specialist which would of course be much more costly. So he recommended that he shave down the crown to adjust my bite and see if the discomfort subsided in the next three days. I liked that option! Well, after he was done, biting did not hurt anymore which was amazing. But of course, I still had an achy tooth / nerve. So I will now wait and see if it gets better. But overall, I am so happy that I found Dr. Joseph Lee. He is honest and friendly, and seems to offer the best possible solution that is in the best interest of his patients. I’m truly impressed and I’m so glad they are located in my neighborhood. My husband and I will most definitely be coming back in the future if needed! Thank you to Dr. Lee and his wonderful staff! ** UPDATE ** Unfortunately, my tooth pain persisted, so I called their office and Dr. Lee asked me to come in right away. He said my pain was due to a deeper root canal issue so he referred me to a root canal specialist because he felt they would be able to take care of my problem more confidently and effectively than he could. And I REALLY appreciate Dr. Lee’s honesty and referral because as a patient, I want to ensure that whatever procedure I get done, gets done right! So I went to see the root canal specialist and he was able to clear out the infection, no problem! Thank you, Dr. Lee for all your help! I will be coming here from now on for all general dentistr

Kristy H. from California (Source: Yelp)


What can I say! The picture speaks for itself! My son was horsing around on Saturday night, needless to say he chipped is tooth in a bad way.  Im thinking oh no he needs a crown at 11 years old… oh my goodness.  My son was scared… mom what happens now? I have to go to school like this? He has all these questions that of course i can not answer.
I call Dr Lee. Dr Lee says don’t worry we’ll get through it.  Then asks if we wanna come in Sunday? We were SO HAPPY not just because he would see us on a Sunday but because he gave us hope, hope that he cared and everything would be okay!!! I posted pics so you could see his awesome work and the review so you could get an idea of the man that he is! Thank you Dr. Lee we love you!!

Stephanie M. from Chino, CA (Source: Yelp)


I started coming here because Dr. Lee was one of the few people in my area (when I lived in Chino Hills) who took my insurance and had great reviews. I’ve been coming to him for over two years now so it’s only right that I add my review. Dr. Lee is great. Even after I moved I still come here because the staff is very pleasant and Dr. Lee is very knowledgable. He is always very direct and explains things thoroughly, and I appreciate that. I have tons of problems with my teeth and Dr. Lee is always great about explaining my options to me and giving me referrals to specialists when it’s required. Even though I don’t live in Chino Hills anymore I still make the drive back even for cleanings because he and his staff do such a good job.

Victor H. from Walnut, CA (Source: Yelp)


My wife went in to get a root canal and told me she liked the service and fairness since we don’t have dental insurance.  So I called to make an appointment and they were able to see me the same day. I needed a filing refilled and the dentist found some other issues after the initial exam but suggested that I get the cavity fixed and refilled.  I wasn’t expecting to get everything done that day and price was fair.  It’s been a week and I am happy with the work performed and would recommend them.  The staff and dentist were very friendly and helpful.

Brandon S. from Atlanta, GA (Source: Yelp)

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This dentist’s office is located in the same area as the Market World and Goodwill, tucked in the corner besides Paris Baguette. I originally came here for a routine checkup but to my demise, Dr. Lee found 3 cavities. Because of Dr. Lee’s extensive X-ray machine, he was able to find cavities that were missed by my previous dentist. Dr. Lee walked me through the X-ray images and showed me where each of the 3 cavities were. He addressed which one was more urgent and tried to help me in terms of cost. Not only are the staff here patient but they are very friendly; they are there because they love their job. Two weeks later and I have completed my 3 fillings and 2 upper wisdom teeth extractions. Time In: 11:55; Time Out: 1:10 The whole procedure only took a little over an hour. I was very impressed because my wisdom teeth extractions took less than 5 minutes! Unfortunately, I was only given local anesthesia and had to feel the whole thing but it was more or less painless. Edit: Receptionist called me a couple of days later to let me know that I was overcharged for my procedures. She apologized and we agreed for a check to be sent to me via mail. Normally, I would be irritated/worried but the fact that she went over the transaction a week later to find the mistake and contacted me in a timely manner far outweighed my disappointment. I think this mistake could have been avoided with better communication between the weekday and weekend staff working the front desk. Overall, this will be my go to dentist whenever I am back home to visit the parentals!

P. W. from Valle Lindo, Diamond Bar, CA (Source: Yelp)


One of the best dental offices I’ve been to! Let’s face it, no one wants to go to the dentist unless they absolutely have to. Dr. Lee runs one of the best staffs I’ve seen. They are fluently bilingual in English and Chinese. You sense Dr. Lee and his staff genuinely care for their patient; you’re not just a $$ sign to them like the feeling you get with some dental offices. My dad had a bad toothache. Result was the dreaded root canal. He previously went to his regular dentist who strongly urged a root canal with matching new enamel crown—a whopping $1350 procedure! Luckily, his other dentist was fully booked for a whole week. Thank goodness a friend referred us to Dr. Lee. Turns out my dad dad did need a root canal but not the enamel crown his other dentist wanted. Dr. Lee saved us hundreds of $$$. That’s what I call a dentist with heart and ethics! Now we bring my dad to Dr. Lee for all his dental visits. And we are grateful to bring our business to an honest dentist who treats his patients with care.

Kim D. from Fremont, CA (Source: Yelp)


Dr. Lee is amazing.  Very recently, I had a toothache. Ive never had a toothache so I thought it was muscular pain and treated it as such.  Of course it became quite clear on a Saturday night that it was a dental issue. So at 1:00 am, I’m experiencing excruciating pain – throbbing tooth pain. Pain so bad I cannot sleep.  I started to panic because it was Saturday night and I knew that Diamond Creek was closed on Sunday and Monday happened to be a holiday.  The thought of being in pain until Tuesday brought me to tears. I was desperate. On the off chance, I messaged Dr Lee to see if he had any Sunday hours. He messaged me back and arranged to see me the next morning on a Sunday!  Turns out I needed a root canal. I’m so grateful that he took the time. And in addition, he’s patient and knowledgeable. He’s very committed to his practice, patients and dentistry.

Loc H. from San Diego, CA (Source: Yelp)


I LOVE LOVE LOVE Dr. Lee!! The past several years I’ve seen maybe 3-4 different dentists. He outranks them by far. He’s very nice and very caring. The first time I visited him was for a deep cleaning. Deep cleanings hurt like hell. I had a deep cleaning with Pomona Family Dental years ago and that trip scarred me for life. Deep cleaning at Diamond Creek is nowhere near as bad. I’ve had the following problems: gum recession, tooth aches, and wisdom teeth removal. Dr Lee has taken care of those issues with ease and I’ve always walked away with less pain than with previous dentists. Therefore, I highly recommend this place.

Michelle A. from City of Industry, CA (Source: Yelp)


I came here based on the raving Yelp reviews and the close proximity to my home, and I have to say Dr. Lee and his team did not disappoint! I had a wisdom tooth infection and was in a lot of pain and contacted the office early in the week  to see when I could get an appointment to get it pulled ASAP while working around my school and work schedule. I was scheduled in that weekend no problem and Dr Lee went the extra mile to ask me to come in so he could prescribe me antibiotics to help with the pain associated with the infection. I’m a huge baby when it comes to needles and Dr. Lee and his assistant were extremely extremely patient and reassuring with me during the numbing process and actual operation, I knew I was in safe hands! The tooth came out easily, and there was no pain, he knew what he was doing. The follow up is great too, I can really tell Dr. Lee, his receptionist and the rest of his staff truly care about their patients, if you are between this place and somewhere else I highly recommend you give it a shot.

Anna C. from Sunnyvale, CA (Source: Yelp)


the ladies in the front are awesome. they are professional, warm, and friendly. they will call you to confirm your appointment the day before and you can text them back if you don’t want to call. this is a feature i’ve never seen before, which was super helpful since i’m usually in class. they have netflix in the waiting room and can connect it to the room that you are placed in. while getting treated you can watch tv [the continued netflix so you dont have to restart your movie or show] on two monitors. you also get a remote to change while he’s fixing your teeth. there’s also complimentary organic juice, coffee, water, and pretzels in the waiting room. Dr. Lee is very proficient in his work. i got an exam, xray, and cleaning for $60. that’s pretty good. he showed me the x-rays on the monitor. but he also showed me live shots and pictures of my teeth with this pen looking tool to project on the monitor. i’ve never seen my plaque and cavities in high definition. it was awesome and i was confident in everything he consulted with me since well, my teeth were horrifying. i later got two fillings which cost a bit more than $200, which is a comparable price to other dentists in the area. the one thing that i don’t like [about any dentistry] is that you don’t have a menu full of prices the way you do at a restaurant. i know this is ridiculous for me to expect but i would like to know how much i am spending for a procedure i am trusting into the hands of another person. Dr. Lee gave me a quote for my procedure but was later slightly changed due to the cavity being bigger than anticipated. this was very fair and kind of him since my teeth are pretty gross and messed up anyway. all this to say that i was still satisfied with the job he did even though the price was changed on top of me being stingy. i trust him with my teeth, the money i pay, and his opinions. and its also pretty rare to encounter such awesome receptionists and RDA’s.

Steven M. from West Covina, CA (Source: Yelp)


I went to see Dr. Lee and his staff today for the first time. I am over the top satisfied with the staff and even more satisfied with Dr Lee. He went out of his way to make sure I was comfortable. They have LCD TV’s everywhere! Even on the ceiling so when you’re leaned back in the chair getting work done, you can watch Netflix or whatever you want. It was a good distraction from the drilling!! Lol! Another great thing about Dr Lee is that he is laid back. He will talk to you like normal person. He didn’t act all high and mighty which is a plus to me. I have not seen a dentist in a while. Only time I usually go is because there is pain. Which is not a good routine. However I was butchered by a dentist in the past so it’s probably why I don’t like to go. However after this experience, I will go twice a year for my check ups. One more Great thing about Dr Lee is that he is a preferred in network dr for MetLife Dental. It didn’t cost me a lot out of pocket. Great Job to all at Diamond Creek Dental.

Cat O. from Rowland Heights, CA (Source: Yelp)


Dr Lee is a miracle and and very handsome!!  I was giggling like a school girl. He made me nervous^^ haha In a totally good way.. Ladies he does excellent work, This was  to gut out a tooth that some how slipped past the eyes of my reg dentist. I wish I had before and afters, I was so dizzy with hormones and Novocaine that I literally floated out on cloud 9. I’m a Libra full of love and romantic at  heart cant help myself 😛 Yes the filling it better than before. NO More having food jam down in between my teeth on the first bite. He fixed the issue and made the work higher quality. I did need a lot of novicane and when I told him I dont numb easily he laughed it off… until got a small jolt with the drill.. I had to get 4 shots to get through it : ( and my jaw was  hurting some that night and I came down with a fever.  Probably just my nerves. Update: I have been fighting an infection that ended me in the urgent care on Monday. I dont know if the filing is too deep and the tooth is rejecting the material or if its the tons of dirty water I had to swallow because he dental assistant just wasnt able to catch it. When I called at first and told them  about the pain AND that I wasnt feeling very good, that I thought something was wrong, I was denied medicine. I waited 2 days called and told them I definitely knew something was wrong that I had a fever off and on again the whole time.They agreed to write me a perscpt. for amox. When you wait that long… it doesnt do much good.. I had to go to urgent care on monday to get something else. Tues.I dont have a fever today. What would have made the entire thing so much better was if I just got enough Novocaine in the fist place so I wouldnt have had to be shot 4 times and have a killer jaw ache. I dont know if the sinus infection is coincidental or linked to it somehow.  I hope the tooth will be ok. Dr. did call himself on Saturday to check how I was feeling which was nice. I am still having some strange pangs of unexplained pain in that tooth. I wanted to come back and write an update that two years later the tooth settled down and is ok^^ I soo appreciate everything the Dr. did. Before I was always getting food trapped inbetween those teeth. He somehow magically sculpted it way better than my regular dentist. That problem is a non issue thanx to him.

Jason C. from West Covina, CA (Source: Yelp)

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just had my teeth deep cleaned and now they look and feel fantastic!  Very satisfied!  The staff is professional, friendly and makes you feel at-home.  TVs on the ceiling above the examination chair was a very nice touch!  Dr. Lee is very skilled and utilizes up-to-date technology to perform dental work.  He also pays attention to the finest details and will inform his patients to ensure understanding of the procedure, which really shows his care and medical professionalism to his patients.

Ana B. from Rosemead, CA (Source: Yelp)


I found Dr.Lee through yelp and he is the best dentist. He is a very honest, kind, and skilled professional who truly cares for his patients. Dr.Lee explains in detail if you need the treatment . Also he is very skilled in giving the numbing shot that you won’t feel it at all. I definitely recommend this place!! I really appreciate how warm and welcoming all the staff were to me throughout my time there!


We treat all of our patients as our family members – with care, compassion and empower you with understanding of treatment options that best fit your needs. It is our goal to make your dental visit very comfortable and pleasant – And of course with supreme quality of dental treatments. Our state of art dental practice is conveniently locate off 60 freeway and Brea Canyon Rd exit. Within the plaza of Hannam World Market, and Goodwill off Golden Spring Rd. Our office is equipped with Digital X-ray system (significantly less radiation), Digital panoramic, CT scan and intraoral camera to provide better diagnosis and treatment options. In the past of Dr. Lee’s associate jobs, many patients told him that “you are the best dentist I ever had, you should have your own office.” After working in many different offices, Dr. Lee felt the urge of demonstrating what true dentistry is about to the trusted community. Not an cut rate dental office, not an office that provide over treatments, or making high profit as the top priority. Diamond creek Dental is established to allow patient to experience a relax, professional dental visit with patients’ best interest in mind. Dr. Joseph Lee is one of the most gentle and friendliest dentist you could possibly find. Dr. Lee is very personable and treats all of his patients as family members and friends. Growing up from a medical family, he is truly passionate in dentistry. He assures that all his patients understand and are comfortable with all the treatments. He strives to deliver top quality dentistry tailored for individual needs. Dr. Lee is also very compassionate of contributing his skills to help others. He had done international mission trip to Guatemala and Mexico. He also volunteer in local free dental events in his free time. Dr. Lee is especially interested in cosmetic dentistry because he loves creating beautiful and confident smiles. Dr. Lee is fluent with English, Chinese mandarin, and Taiwanese language. Dr. Lee is currently a Diamond Bar resident. Office staff is fluent with Spanish.

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