Boston Dental Group
Sung Kim, DMD:
Practice Profile Page


Boston Dental Group
Sung J. Kim, DMD
Rockville, MD













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


Monday: 9:00 am to 5:00 pm

Tuesday: 9:00 am to 2:00 pm

Wednesday: 9:00 am to 5:00 pm

Thursday: 9:00 am to 2:00 pm

Friday: 9:00 am to 5:00 pm

Saturday: 8:00 am to 1:00 pm

Sunday: Closed


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

Longhui G. from Wheaton, Wheaton, MD (Source: Yelp)


Like what everyone else have said, this dental office goes above and beyond. Simply the best dental practice I have ever been to. Everyone in the office is professional and friendly, which is so important since many people are nervous about going to the dentist. Dr. Kim is gentle and does amazing work. Cannot recommend this office enough.

Evan Hochberg (Source: Google)


I selected Boston Dental because they had the soonest appointment on ZocDoc and I had a time sensitive issue. They were AWESOME. Great, clear COVID policies, extremely nice staff, and Dr. Kim’s exam and explanations were clear and he showed a true interested in listening to my concern.

Andriana S. from Alexandria, VA (Source: Yelp)


I had an amazing experience today with Dr. Kim. I had a root canal done and this was by far my best dentist visit in life! He was funny and very thorough with my treatment. There was no wait time and the receptionist (lady at the front) who also worked on me was very polite, pleasant, calm and efficient! They had me in and out very quickly and most importantly explained every step of my treatment plan with me. He made sure I completely understood what and why he was doing what he was doing! He earned a new patient today! Thank you all so much again! He is definitely worth every penny!

Ut T. (Source: Zocdoc)


Dr. Kim was excellent! He thoroughly explained the anatomy of my teeth by walking me through my X-rays. He was very patient. Constantly checking in to make sure I was okay during my teeth cleaning. Both him and his assistant offered a welcoming and relaxing environment. Never met a dentist like him before. Highly recommend!

Shane G. from Rockville, MD (Source: Yelp)


Best dentist in the area for sure.  I’ve grown up in Rockville neighborhood and been through good 6-7 dentists in the area and beyond, but this one is by far the most honest and skillful dentist.  I went there at first for simple cleaning on the cheap, but Dr.Kim and his staffs treated me with respect and without pain.  He took time and very slowly injected the local anesthesia so the drug numbs the spot as the needle is piercing resulting in no pain.  The place has very fancy all digital machines, but it’s not so big that you feel that you’re lost.  If you’re looking to try out a new dentist, this is the place.  He takes insurances, I used United ins, but he charged me very fair prices even for out of coverage procedures.

Richard S. from Rockville, MD (Source: Yelp)


As a dental professional, I always wonder what my patients see and experience before, during and afterwards. Well, I was very glad to have gone to Dr Kim! He’s very gentle, thorough and thoughtful to his patients. I have no reservations in recommending Dr Kim and the staff of Boston Dental Group to anyone!

Caitlin M. (Source: Zocdoc)


I scheduled a somewhat-emergent appointment here because I was having significant pain and my usual dentist couldn’t see me for three weeks. Dr. Kim was thorough but concise, gave me a prompt diagnosis and his recommendation, and the x-rays, discussion, and extraction done in under half an hour. The office staff were polite and friendly and did an excellent job with COVID screening precautions.

Conrad F. (Source: Zocdoc)


Dr Kim and his office staff were first-class! Despite all the challenges with the pandemic, they were able to see me on time. No waiting! And Dr Kim’s chair side manner was beyond excellent. He pointed out very clearly the issues (and mitigations I would need to take care of myself) on each area of my gums and teeth while working on them. Plus they have state of the art X ray machine, and he displayed the results on the wide screen TV in front of me while on the chair … just a lot of class and technology too! But it was the people-skills and personal touch and clear explanations including multiple ways for self-care, that was most impressive! Easily HIGHLY recommend Dr Kim and this office.

Angie H. from Annandale, VA (Source: Yelp)


I usually don’t write too many Yelp reviews but I use Yelp all of the time. I felt compelled to write a good review this time, thought, because I am so happy I found this dentist. I have avoided going to the dentist for literally years because I normally have so much pain during cleanings. However, I randomly (thanks to my insurance company) found this dentist who listens to me and actually (for once) I got a cleaning with no pain! The other great thing about this office (besides people who listen to your concerns) is everything is brand new and all of the technology is state of the art. The place is spotless. Also, I got an appointment right away and had no wait time once I got into the office. I would also recommend this dentist to people who want to avoid the hard sell. A lot of dentists will recommend procedures or products that you don’t want or need – I did not experience any of that here, at all, which I really appreciated. The dentists seem to be younger people, so maybe they realize that the hard sell is not what people are looking for. Also, after I asked about it, they recommended a way for me to maximize my benefits on my insurance plan by scheduling another cleaning before the end of the calendar year, which I would not have thought of. They made dealing with my dental insurance company/payment super easy as well. I am so happy that I found this dentist! I am definitely going to be back. I would recommend this practice to anyone who is not happy with their current dental practice, or looking for treatment – especially people who are normally afraid of going to the dentist, like me. I found that the dentists were easy to talk to and really nice and friendly as well. Cannot recommend this place enough.

DC F. from Washington, DC (Source: Yelp)


New patient and I arrived 30 minutes late to my first appointment. I hate being tardy, but DC traffic + torrential rains got the best of me. I was the last appointment on a Friday, and although I called at my appointment time telling them I am trying to get to the office, instead of insisting that I reschedule, the lady on the phone told me to come in and not to worry. I was deeply apologetic upon arrival, but the two assistants and even Dr. Kim told me just take a seat and take my time to fill out the paperwork, no rush, although I was the only patient in the office. To top everything off, I had to bring my one year old son with me, who normally would just sit in the portable car that I brought with us, but after sitting in traffic for 90 minutes, he was not having it. HOwever, one of the assistants took him and pushed around while I had my cleaning. All in all, Dr. Kim is extremely professional, knowledgable, patient, and kind. The facility is spotlessly clean, probably the most sanitary doctor’s office I have ever been to. They really went above and beyond for me. And his assistants are gems. A friend of mine recommended Dr. Kim to me and I’d definitely recommend him to others. You won’t be sorry.

Andrea C. (Source: Zocdoc)


Dr. Kim and his colleague Dr. You were truly incredible and down to earth. I have never had such wonderful care taken of me. I cannot day enough nice things about this office! From start to finish was absolutely amazing. This is my dentist from now on! Love them!!!

Anita H. (Source: Zocdoc)


The dentist and all his staff on duty were very professional and they took good care of me during my appointment. I went for annual check up and cleaning. Everything went as expected even beyond. The dentist explained to me in details my teeth condition send me home with a smile and a goodie bag with toothbrush, toothpaste and floss string kit. I felt like I am 10 years old and leaving the dentist office with gifts 😀 Thank you so much for the great experience! Definitely recommended!

Latisha G. (Source: Zocdoc)


Dr. Kim is an excellent dentist! He explained what was happening, what he was doing, and why he was doing it with great detail and knowledge. He made next steps clear, but made sure to emphasis that I have to make the final decisions according to what makes sense to me. I have been to three different dentists in the past year who have all failed miserably. I drove 40 minuets out of my way and will continue to do so, as he is the best in the business. To top it off his supporting staff is just as amazing! They were kind, efficient, and worked well together as a team. I recommend Dr. Kim to all looking for a dentist, you will not be disappointed!

Jonathan O. (Source: Zocdoc)


It was amazing I honestly hate going to the dentist but he already saw from the beginning that I was nervous and I usually get anxiety but he talked to thru everything step by step and made me feel really comfortable and i didn’t feel a thing so it was a great visit I highly recommend going to see Sung J Kim.

Nathania S. (Source: Zocdoc)


Dr. Kim and his team are quick, efficient and friendly. They offer weekend hours which is wonderful and they also provide future recommendations (orthodontics, night guards, etc) without pressuring you so you can decide when to get things done at your convenience. My husband and I both love going to Boston Dental for our dental needs.

Nadinne R. (Source: Zocdoc)


Dr. Kim is amazing, he’s very patient and he explains you everything step-by-step. He’s perfect for young millenials, too, because he’s willing to explain insurance-related questions and stuff.He even shows you the xrays and pictures through the flat screen in front of the chair! I really appreciate the transparency by explaining to me what’s happening and steps I can do to fix it. He doesn’t push unnecessary operations because he does give you options and pros and cons of each one. I also like that he’s nice but he doesn’t sugarcoat anything. He will tell you if you’re doing something wrong with your routine and tell you how to fix it! Will definitely visit again. He makes you comfortable!

Cynthia P. (Source: Zocdoc)


This is my second visit with Dr. Kim. I have extensive dental work to be done over time and have selected Dr. Kim to do it all. He explains in thorough detail, including showing you too on the picture monitor, exactly what he will be doing. He is also very compassionate with those who have a phobia going to the dentist. Which is me!

Yicela Alvarado (Source: Google)


Amazing customer service. Dr.Kim and his staff are beyond professional and understand bedside manner. Although I could not get my wisdom teeth extracted here they referred me to another dentist professional. I will continue going to Boston Dental because they are kind, courteous, and meet all your dental work needs. Thank you!!

Annie L. from Elkridge, MD (Source: Yelp)


This is absolutely the best dentist I’ve ever seen. Patient, knowledgeable understanding friendly staff easy to make an appointment. Concerned about their patients I can’t say enough about this dentist office every procedure I’ve had has been top-notch I would highly recommend to anyone looking for a good dentist you will not be disappointed. Dr. Kim takes time to explain everything to you.

Wes V. from San Francisco, CA (Source: Yelp)


This is truly as good as it gets! I had a bridge created by Dr Kim that is so good, it took me along time to write this review. It’s like test driving a car and liking it so much that you forget to return to the dealer to finish the paperwork! The staff is Great, Dr Kim has a great manor and way of explaining what should be done and what you have to keep an eye on for future work. So I do floss and wear my night guard because it is comfortable because of the skills of Dr Kim.

Stephanie J. (Source: Zocdoc)


I’ve lived in Maryland for 3 years and still went to my dentist in New Jersey because I was so anxious about finding a new dentist. Dr. Kim was amazing – I have no idea why I waited so long! I was seen pretty much immediately. He has Saturday hours (SO CONVENIENT). The office is pretty updated with all kinds of new equipment my old dentist’s office didn’t have. Dr. Kim used this awesome camera to take super-macro up-close shots of my teeth and gumline. He pulled each photo up on a screen and pointed things out to me I never would’ve seen. He explained things, like how my gum dipping close to my tooth meant I needed to floss better. Seeing things that close and personal actually motivated me to take better care of my teeth. He even helped seal an abfraction (tiny notch near the gumline) I have because it was sensitive. He told me to bring my retainer next time so he could see if the fit was causing the issue and possible fix it. He was crazy attentive and personable…. even better than my old dentist. My check-up was covered by insurance, and there were no billing issues (which is rare, since most of my doctors manage to mess that up). I highly recommend him!

Ximena Garrido (Source: Google)


(Translated by Google) All my appreciation for the great professional team of Boston Dental Group, thanks to them I have been able to overcome my gum problems without discomfort in any phase of the treatment. Always friendly and willing to assist me in some emergencies. Thank you Team !!!!!!! !!! (Original) Todo mi reconocimiento por el gran equipo profesional de Boston Dental Group,gracias a ellos he podido superar mis problemas de encias sin molestias en ningúna fase del tratamiento.Siempre amables y dispuestos a atenderme en algunas emergencias.Gracias Team!!!!!!!!!!

Stephanie D. (Source: Zocdoc)


Dr. Kim and his team are fantastic and so friendly. He is very explicit about his plan and what’s necessary. He really stresses the importance of daily dental hygiene but without being condescending. I had to have a crown redone and the entire process was great and my bite was flawless afterwards. Very pleased and impressed with his attention to detail. Him and the team make every dental process I’ve had done so far super easy!

Putra S. from Rockville, MD (Source: Yelp)


I love these guys. They are my new go-to! I had a cleaning and wisdom teeth extraction. Both experiences were wonderful. Also I barely had to wait when you come in at your scheduled time. I scheduled an appointment online through Zocdoc. It’s super easy! Never have I had a dental experience where the dentist and assistants were so educational about dental health. When we took an x-ray the dr went through the pictures on the big screen and provided a thorough explanation of the current health of my teeth. The dr created such a comfortable atmosphere. He loves to joke around, and is extremely attentive. That also goes for his assistants are also very nice and attentive. During my wisdom teeth extraction they constantly checked in on me (they only numbed me for the surgery). The operation was fairly quick, it took about 30 minutes to complete! They took out 3 teeth, and one had an extra root. Overall, I highly recommend this establishment. They do the job efficiently and they are incredibly nice. Anyone can tell they care about their patients. What more could you ask for?

Tina B. from Rockville, MD (Source: Yelp)


I have never had to wait when coming here! I am immediately brought back, or only have to wait no more than 5 minutes, if that. Dr. Kim is funny, personable and tries hard to make me feel comfortable. This is the first dentist I’ve been to where the dentist did all the work, including the cleaning. He explains everything that he is doing and makes sure I understand everything. He showed me my x-rays and pictures (like actual photographs of my teeth, pretty cool!) and pointed out a few issues and explained everything. He even showed me a video explaining one potential problem. Everything here is state of the art. My appointments have always been completely stress free and I have already recommended Dr. Kim to a friend. I get very anxious when I go to the doctor in general, but I am quickly calmed down by Dr. Kim and now I don’t mind going to the dentist at all, it’s actually very bizarre for me. The only thing is that he has an accent which was a bit difficult to understand at first, but just pay attention when he’s talking. Also, I get email and text message confirmations from the office for my appointments, which I like.

Anna P. from Garrett Park, MD (Source: Yelp)


Amazing!! I used to hate going to the dentist, now I look forward getting my teeth taken care of!!! Dr. Kim is the best!!! He has the most gentle hands in the world! I have had so many cavities and problems, he even had to do a root canal, and boy it was a great experience to know that I was not in pain and no infection after being scared by all my friends! He is kind and patient. The office is super clean and state of the art technology! The reception is good, and the care is invaluable. I would recommend this doctor to all!!!!

Ayishah T. (Source: Zocdoc)


I had an awesome dental experience today! Dr. Kim fixed and issue two other doctors told me to leave alone and monitor all while waiting to see if my bone would deteriorate. Dr. Kim fixed it all while making sure I was comfortable and not in any pain. Not only did I not feel the needle When he numbed me but he continuously made sure I didn’t feel any pain.

Nathania S. (Source: Zocdoc)


I was a bit worried to go for a cleaning during the pandemic but they’ve taken numerous precautions and made me feel quite safe and comfortable. As always they’re efficient, while still being thorough, they seem to always remember their patients and get them into their appointment quickly. You can’t go wrong going to this dentist.

Ryann F. (Source: Zocdoc)


I was very happy with my experience. It was my first time. The staff was extremely friendly and professional. Social distancing practices were perfectly adhered to. The doctor was very thorough. He was knowledgeable and explained everything that was happening with my dental care in great detail. He even showed an explanation video! I’ve already booked my next appt 6 months out. I highly recommend!

Jaclyn S (Source: Zocdoc)


I highly recommend Dr. Kim! I have looked for a reliable dentist near DC for years, and am so happy I found Dr. Kim’s office! The entire team is phenomenal. They are very professional, diligent, and honest. DC is known for having shady dentist practices especially in regards to billing. Dr. Kim is honest and does great work. He is very detailed and explains everything clearly. He never pushes unnecessary, costly procedures. I appreciate the entire teams work, thank you!

Danica C. (Source: Zocdoc)


Dr. Kim was truly wonderful. He explained everything that was happening during my appointment and shared his expertise willingly. He was also extremely patient and willing to answer my questions. I didn’t feel like he was trying to rush off to his next appointment but was patient and knowledgeable.

Danielle S. (Source: Zocdoc)


Dr Kim was a very smart and funny guy. He explained the status of my teeth and showed me what he was talking about with a tiny closeup tooth camera. I felt like he really knew his stuff. I didn’t feel like he was pushing unnecessary treatments on me, as I have experienced with other dentists.

Paul P. (Source: Zocdoc)


Ive gone to other pracitces in the area , none as to the point and caring as Dr. Kim . He was kind and explained everything along the way before doing and why it needed to be done . I to pracitce where all they did was look at my teeth, quote and tell me this was going to be expensive . Now i have utter peace of mind, and tranqulity . If you have a phobea to go to dentist i understand, but after today i fully trust for all my dental needs. I was scared for years to see a practice and now i feel i finally found my dentist . Hes definitely worth going to and being in his care . 

Jess P. (Source: Zocdoc)


My visit with Mr.Kim was so much better than my primary dentist. He’s very attentive and friendly which made me feel comfortable and at ease at my appointment. Also, he gave me some knowledge about my teeth and reccomended me on what actions I should take next with him. I’m absolutely grateful that I’ve chosen the right dentist for me. 10/10 !!!!