Custom Smile Dentistry
Daniel Nguyen, DDS:
Practice Profile Page


Custom Smile Dentistry
Daniel Nguyen, DDS
Sierra Madre, CA













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

Dental cleaning

White fillings


Inlays & onlays


Clear aligners

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

Offers ClearCorrect™? Yes


Monday: 7:00 am to 4:00 pm

Tuesday: 9:00 am to 6:00 pm

Wednesday: 7:00 am to 4:00 pm

Thursday: 9:00 am to 6:00 pm

Friday: 7:00 am to 3:00 pm

Saturday: Closed

Sunday: Closed





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

Suzanne M. from Sierra Madre, CA (Source: Yelp)


Everyone at this office has it together.   I had some great dentists.  I mistakenly thought they were all great and interchangeable.   Then I moved to Sierra Madre and just picked a random dentist.  Mistake.   I went to a second dentist.  Mistake.   Either they messed up my insurance information, or they would have me waiting in the waiting room long after my appointment should have started, or had crazy hours that couldn’t accommodate my work schedule, or were brusque, or took an insanely long time to just do a cleaning.   But not this place.   Their office manager does a great job of making the appointments and dealing with the insurance.  She she sends email and text reminders.   I always get seen within ten minutes (usually less) of my appointment time.   I can always make an after work appointment.  The dental hygienists are quick, thorough, and super friendly.    I found Dr. Nguyen to be very friendly, clear, and available.  This place just seems well run.

Lynn Fernandez (Source: Google)


Very professional, courteous and calm environment. Dr. Nguyen is calm and patient and takes time to explain thoroughly. I am always anxious with dental work but Dr. Nguyen is understanding and patient. Ernesto is great. I appreciate all his help and friendly and professional demeanor. The team is committed to taking care of their patients. The office is not close for me but worth the drive and the 210 freeway traffic!

Alonso M. from South Pasadena, CA (Source: Yelp)


I have been a patient of Dr. Nguyen for more than a decade now. I have followed his practice from Chino to now in Sierra Madre. Dr. Nguyen is an excellent dentist. He is a good listener, and his calm demeanor is comforting and reassuring. His staff (Katie, Michele, Ernesto, Maria, and Adriana) are all great at what they do, very professional, yet warm and friendly as well. I recommend his practice all the time, and believe it or not, I’m not afraid of dentists anymore.

Hank M. from Irwindale, CA (Source: Yelp)


I have been coming to Dr.Nguyen practice for two years now and they offer excellent service. The office staff is very knowledgeable and understanding and make you feel comfortable immediately. Dr. Nguyen is thoughtful, friendly and meticulous. If work has to be done I want the precision of Dr. Nguyen’s hands to do the work. By far, he’s the best Dentist I’ve ever been too.

Keith Ray Putman (Source: Google)


I am a new patient at Custom Smile Dentistry, but so far I’m very impressed. They have cleaned teeth for both me and my 7-year-old son, and they dealt with his dental phobia beautifully. You feel like you are the focus at this office, not like you’re another number being pushed through the pipeline. I had a cavity filled and the procedure was done with absolutely minimal discomfort.

Mike M. from Pasadena, CA (Source: Yelp)


Dr. Nguyen and his staff are the best.  They answer questions fully, are as gentle as dentistry can be, thoughtful about your comfort throughout procedures, and endeavor to make the experience in the chair and in scheduling as simple, painless, and easy as possible.  I have been coming here for at lest two decades, even back when Dr. Yan was the only dentist at this practice.  Dr. Nguyen is an expert in the latest procedures, techniques, equipment, and materials.  I have great confidence in him and his staff.

Paul E. from Pasadena, CA (Source: Yelp)


Moved to Sierra Madre a few months ago and needed a new dentist.  Dr. Nguyen and his staff have been amazing!    They put so much time and care during cleanings and exams.  Very thorough!   My 5 year old felt so comfortable with them all!  Great staff and hygenists!

Tyke Zorbas (Source: Google)


My name is Tyke and I have been a dental patient at Dr. Nguyen’s Dental Office in Sierra Madre office for many years. When you walk in the front door the staff is friendly and efficient and you feel at home. I had a pain  pop up in one of my teeth and called Custom Smile Dentistry. They were able to see me within the hour and Dr. Nguyen after a through investigation, with the latest technology found one of my sinus cavities was congested and wrote a prescription to fix the problem. Dr Nguyen is without a doubt one of the very best Dentist’s anywhere.

D. J. from Pasadena, CA (Source: Yelp)


This is an excellent dental practice. Dr. Nguyen is very gentle with his treatments. I have had my extraction and implant surgery done here and the care is exceptional. Staff members Lauren and Ernesto are always helpful. Can be expensive without insurance but I highly recommend this practice.

Olufemi G. from San Francisco, CA (Source: Yelp)


Dr. Nguyen and his wonderful staff make all of my visits pleasant. I’ve had emergency dental issues, and the doctor has responded right away, opening his office outside of office hours to attend to the issue. After a dental procedure, the doctor will make a follow up phone call to make sure the patient is in good health and isn’t experiencing discomfort. This makes me know that Dr.Nguyen truly cares about his patients. Everyone is kind, welcoming, and very professional.

Karina G. from Pasadena, Los Angeles, CA (Source: Yelp)


I was having extreme pain from a bad wisdom tooth. My current insurance no longer took my original dentist so I had to find someone new and fast. I found Dentist Ngyuen and looked at the reviews and decided to give him a shot. Well I was able to get a same day appointment not only that they extracted the tooth that same day too!!! Dr. Ngyuen was great at putting me at ease. I had been dreading taking out my wisdom teeth out that I procrastinated until I could no longer bare it. He made this experience a walk in the park. I came out with minimal pain and swelling and was able to go back to work the next day. His staff was friendly, professional and quick. I am so happy I found Custom Smile Dentistry!

Amelia R. from Monrovia, CA (Source: Yelp)


I love my dentist!! I moved to Laguna Beach and still make the trek to see Dr. Nguyen! I actually chipped a tooth, and he was able to see me the next day. This is a really special office with fabulous customer service and technology! Everyone here is also very gentle – I’ve never had a bad experience! If you’re looking for a new dentist, look no further!

Alexandra E. from Pomona, CA (Source: Yelp)


Is it normal to look forward to a visit to your dentist?? I actually do! They are absolutely the best possible dental experience one could hope for and more. Professional, ultra-competent, up-to-date on method and tech, friendly and concerned for the comfort of the patient in every way. I cannot come up with enough superlatives for Dr. Nguyen and his staff. They are all aces!

Devashree (Source: Google)


This is an excellent dental practice. Dr. Nguyen is very gentle with his treatments. I have had my extraction and implant surgery done here and the care is exceptional. Staff members Lauren and Ernesto are always helpful. Can be expensive without insurance but I highly recommend this practice.

Helen (Source: Google)


Who likes going to the dentist, am I right? But I know that when I step foot into Custom Smile Dentistry, I know I am in warm and capable hands. The receptionists and dental hygienists there are always warm and friendly, and I can usually get an appointment within the same week if needed. I appreciate the fact that Dr. Nguyen always takes his time in a calm manner to explain any procedure he does using many different types of high tech dental equipment. These days, it’s hard to find a reliable, friendly dentist, but do check this one out.

Richard D. from Los Angeles, CA (Source: Yelp)


Dr Nguyen along with Nick took me in during these tough times (04/02/2020) Pandemic. I broke my tooth and called and left a message. Within minutes Nick called me back and made me an appointment he following day. From when I arrived to sitting in the chair, they made me feel comfortable. What was amazing is that they went to work right away and saved my tooth as well as did the cap in house. Truly remarkable to see how advanced Dr Nguyen is along with his staff. Never ever I have seen such technology first hand. Custom Smile Dentistry will be my dentist for life and I thank you from the bottom of my heart for taking care of me during these rough times.

Tami M. from Altadena, CA (Source: Yelp)


I highly recommend Custom Smile Dentistry. Dr Nguyen is knowledgable, thorough, gentle and caring in working on my mom and I. The hygienist Genelyn and Maria does equally good work too. The office staff is cordial and helpful with our needs too.  Most importantly the office is very modern and very hygienic. A must in the dental field.

Birgit H. from Sierra Madre, CA (Source: Yelp)


My new favorite dentist office in the entire world! I haven’t seen a dentist in a little bit and thought it’s more than time to at least get a thorough cleaning in; also already thinking I might have a cavity…From my first contact with the office on the phone, to the time I walked in, through the entire treatment, until I stepped out of the door – everybody was so nice. The atmosphere was calm and positive. I got the cleaning right away (which was not painful whatsoever!) and will have to get 2 cavities taken care of. Nothing was pushed upon me; I never felt pressured. Dr Nguyen basically showed me “some issues” and gave me options (from cheap over medium to expensive) with all the pros and cons. For a vein person like me: those issues ARE REAL and worth a thorough consideration. Overall, a very professional, positive and pain free experience.

Leslie Clark (Source: Google)


Dr. Nguyen is the best! After 10 years of pretty much playing Goldilocks with dentists, I have FINALLY found one that I want to keep! Dr. Nguyen is gentle, kind, meticulous, great at explaining every procedure step by step, and causes my physician triggered anxiety-that occurs with ALL doctors-to subside. He also has state of the art equipment, and an office staff, including hygienists, that are welcoming and professional. I was referred to Dr. Nguyen by a coworker that said, “ I love my dentist!” She was the first and ONLY person to say those words during my search for a referral. Now, after receiving a cleaning and a root canal, that oddly enough I looked forward to having after first meeting Dr. Nguyen, I may soon say those same words! It’s only been 2 visits. Saying “love” is a bit early, but I can feel it coming. One downer, his office is only open on weekdays, but so far, it’s been worth taking a day off from work.

Donna S. from Monrovia, CA (Source: Yelp)


Custom Smile Dentistry is amazing!! I usually only write reviews for restaurants, however I really enjoyed coming to this office that I figured I should go online and give a Yelp review. Dr. Nguyen is so informative and educational he even taught me how to floss!!! Also his staff is super nice and helpful, you know how other offices the girls in the front are kinda mean and you feel bad asking them a question, well not this office his front staff made sure I remembered my appointment time, they even sent me a text to remind me. Since Im so forgetful and ask for them to give me a reminder call 🙂  If you are looking for a dentist, give this office a call and make an appointment, you will actually like going to the Dentist.

Steve M. from Mount Hope, KS (Source: Yelp)


What a great experience!   Everyone was so friendly and professional and really took their time to make me feel like I was a life long patient, when this was my first visit.    The doctor took his time and really explained and showed me what was going on.  Just a vastly different experience from my old dentist. I thought it was time to switch…and I’m so glad I chose Custom Smile Dentistry!

Verdeen J. from Pasadena, CA (Source: Yelp)


Very efficient office filled with very kind people from the first contact and including the Dentist.   They were on top of everything to make sure my appt ran smoothly ( incl. my insurance ) they have the very latest in technology – to refine their diagnosis which allows for the very best service and outcome which is so appreciated, you only have one set of original teeth!  This is a compliment- the reception area was completely nice but you didn’t feel like they unwisely overspent to make it ultra chic.  I hate looking for a new dentist- but moved and had to.  I’d definitely recommend to save yourself some grief- just go here‍.

H. C. from San Marino, CA (Source: Yelp)


I had seen Dr. Yan for three years and then have been seeing Dr. Nguyen for about three years now.  Dr. Nguyen is a gentle, highly skilled, experienced, and organized dentist.  He is kind and willing to listen and accommodate my needs.  I am very happy with his treatment.  I always feel pretty comfortable during treatments and never had any issues afterwards. His staffs are very professional and also kind. I strongly recommend him to anyone looking for high quality dental care.

Nadia K. from Pasadena, CA (Source: Yelp)


I’ve never had a dentist office so amazing. Everyone is super friendly and accommodating. The woman who runs the front office found out I had a before and would text me about appointments so that I could multitask without waking baby. The assistant, dentist and hygienist were all friendly and very informative about everything they were doing.

Kristina M. from Covina, CA (Source: Yelp)


I have nothing but great things to say about the experience at Custom Smile Dentistry. Our visit from start to finish was top notch and I could not have asked for anything more. The staff was super friendly and we were greeted and taken care of by Ernesto as soon as we walked in the door. The office was nice and clean and Dr. Nguyen is as kind and as professional as they come. He was very straight forward and direct with orthodontic treatments and options and made us feel extremely comfortable the entire time. We will definitely be returning in the future as soon as my little one loses all of her baby teeth. Thank you Dr. Nguyen and the Custom Smile Dentistry staff!

Lynn F. from Seal Beach, CA (Source: Yelp)


I am a recently retired dentist that moved to Sierra Madre.  I needed some repair work and thought that instead of driving an hour and a half to my former dentist, I would try a local & not to tell my background.  I knew exactly what I needed.  The ” Custom Smile Dentistry” did everything exactly right.  In fact, Dr. Nguyen was very meticulous and did an excellent job.  No pain during the procedures and I had zero post-op discomfort.  This is a great office.


Originally established by Dr. Donald Yan, who has since retired and passed on the practice to Dr. Daniel Nguyen. We continue to strive for quality dental care and Dr. Daniel Nguyen has continued to be a trusted and reliable source of dental care in Sierra Madre, CA. EDUCATION USC School of Dentistry. Los Angeles, CA May-2000 EXPERIENCE Dr. Nguyen has over 18 years of experience with emphasis on cosmetic and reconstructive implant dentistry. He completed a 2-year residency training in implantology at the prestigious California Implant Institute in San Diego. Dr. Nguyen has over 18 years of experience with emphasis on cosmetic and reconstructive implant dentistry. He completed a 2-year residency training in implantology at the prestigious California Implant Institute in San Diego and earned a Fellowship from the International Congress of Oral Implantologists in 2005. In 2004-2005, he also completed a 2-year orthodontic training with Dr. Don Mc Gann of Progressive Orthodontics in Aliso Viejo. He is currently a certifed Invisalign and ClearCorrect provider allowing him to straighten your teeth with clear aligners for those who want to avoid traditional braces.