PDX Center for Dentistry
Samuel Seo, DMD:
Practice Profile Page


PDX Center for Dentistry
Samuel D. Seo, DMD
Portland, OR













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: 7:00 am to 5:00 pm

Tuesday: 7:00 am to 5:00 pm

Wednesday: 7:00 am to 5:00 pm

Thursday: 7:00 am to 5:00 pm

Friday: 7:00 am to 5:00 pm

Saturday: Closed

Sunday: Closed


Dr. Samuel Seo, DMD





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

Albert Flores (Source: Google)


Came for the extreme toothache, stayed for the healing and amazing people!! When I called initially, I expressed my many fears and anxieties around dental work and the receptionist was very reassuring about how Dr. Seo and his staff would be exceptionally empathetic with my situation. Dr. Seo was absolutely awesome at communicating to me through every step of the process as I had a root canal and tooth extraction procedure done to relieve my pain. I was feeling immediately better after my initial procedure. I am rockin my new crown and I look forward to coming back in the future, not only for my dental health, but because their staff was so friendly and personable. Thank you to Dr. Seo and your entire staff for everything!!

Manoj D. (Source: Zocdoc)


Dr Samuel is pretty nice. I wanted an appointment on urgent basis and Dr Samuel confirmed my appointment pretty soon compared to other doctors. The hygiene is great especially around Covid, he has a special suction mechanism to prevent spread of aerosol around which shows the extra care been taken around these times. 10/10 would recommend.

Stephanie Paley Lmt (Source: Google)


I receive excellent care with Dr. Seo and Dental Hygienist Jerry. I’ve been a patient here for years, and I wouldn’t go anywhere else. This office is personable, full of kindness, and the best skill/talent for dental services. Going in for routine care isn’t at the top of the list for relaxation, but I always leave feeling healthy and clean! Routine dental care is so important to our overall health, and I fully trust PDX Center for Dentistry to help me stay healthy.

Amanda Lunger (Source: Google)


I found this office 3 years ago when I was looking for a conveniently located dentist office. A year later my insurance changed and I had to go somewhere else, but as soon as I got back into network I made a point to come back. Jerri is the BEST hygienist in Portland. So warm and thorough, she went above and beyond by researching my insurance to let me know I could get a cleaning every 3 months. It truly feels as if she is invested in my dental health! Dr. Seo is also very kind and approachable, and has done a great job making the transition from dr. Sundberg’s ownership comfortable and easy.

Rob Bon (Source: Google)


Had a severe tooth ache while travelling through Portland and called several offices based on Google reviews right before the 4th of July holiday. After a few tries with no luck, PDX Center for Dentistry said they could see me. They did a very thorough check up with X-rays and had to extract two teeth. I was impressed with Dr. Seo’s professionalism, the cleanliness of the office, and the staff. Prices were fair, but since I live in Arizona, I usually get dental and work fone in Mexico since I don’t have dental insurance and Mexico is so much more affordable. Otherwise I would certainly continue to see Dr. Seo.

Francesca Yvonne (Source: Google)


Excellent experiences in dentistry are uncommon and therefore worthy of a very positive review! Dr. Seo ( pronounced “so”) is an incredibly calm, dedicated professional with amazing communication skills (he speaks fluent English, Spanish, and Korean!). He is patient and kind and so are his amazing team. They work with you honestly and with integrity and explain all the procedures thoroughly and clearly. They are upfront about costs and worked with my budget so that I could receive the care I needed and not break the bank. I truly cannot say enough about how appreciative I am to have a dentist who is extremely skilled not only in his occupational field, but also on a very human level as a healer. His exceptional commitment to his patients is reflected in his choices in competent, capable staffing. Make an apppintment now because once the word is out, there will be a huge wait and also, please know that this office is hardcore serious about protecting themselves and their patients. I felt very safe and well- cared for at my first appointment since the pandemic. Take your pearly whites to Dr. Seo. Do it today!

Douglas Curvey (Source: Google)


Now I don’t believe in giving 5 star reviews but my experience here was the best experience ever at a Dentist office. I just started a new job so my insurance hasn’t kicked in yet, and Doctor Sam Soe made the pricing on a Xray and Feeling very affordable and easy. I had a small pain from a cavity and now the pain is gone. Thank you so much Dr. Soe you have a patient for!

Dan Mcnair (Source: Google)


Dr. Samuel Seo and his staff are awesome. From the hygienists and assistants to the front desk staff everyone is very good. I really appreciate their friendliness and thoroughness. When I leave from a cleaning my mouth actually feels clean! (Thank you Jeri!) I have had several visits since he took over the practice and am very happy with the transition. I am willing to recommend Dr. Seo to a friend or family member so I can recommend him to you.

Cindy Rumble (Source: Google)


I am so grateful to find Dr. Seo! He is the best and has gone beyond the requirements for reopening since COVID 19. I travel from the Oregon Coast for my dental care because of his care. Every step of the experience was great from Emily at the front desk to Jerri the dental hygentist. I had a horrible experience with another dentist and was very leary but my confidence had returned because of Dr. Seo and his staff!

Sean Holbrook (Source: Google)


Had some dental work done by Dr.Samuel Seo today. I can confirm to everyone reading, this is who you want to give you that great smile. He is honest, holds himself and his staff to the highest standards in regards to quality work. His integrity, honesty and kindness is something special. He explains the process for every step so you are not lost on what is going on. He always has a smile on his face and you can tell that this is not just his job, this is his passion. I promise you, once you come here you will not go anywhere else.

Rae Jay (Source: Google)


I’ve seen Dr. Seo a couple of times now. He is very friendly, he listens to and accommodates my concerns and he is very skilled. His assistant, Kim, is also very friendly and fun to chat with. I had an odd-shaped incisor, which also started to crack. He designed a crown for me and it looks fantastic. He matched the size and shape of the opposite incisor and it looks so much better than I thought it could. He also placed an implant crown for me. I highly recommend Dr. Seo and this office.

Alex Dunne (Source: Google)


Best dental care of my 60 + years. Even with pandemic still on, everyone in office made me feel safe, comfortable and cared for. Dr. Seo is a first class dentist and most fitting successor to Dr. Sundberg. Gerri–spelling?–is the very best dental hygienist I have ever had and just as skilled in personal, caring arts as well. If pain ever appears she quickly moves the tool to a safe place. Can’t say enough positive things about her. Going to the dentist is no longer a day to fear.

Ronica Alexander (Source: Google)


I have nothing but positive things to say about this location. I was here when Dr. Sundberg worked here, and was happy to see that the experience was just as good if not better when Dr. Seo took over. Everyone on this team is highly dedicated to patient care and comfort, and I am confident in their skills and capabilities. As much as I don’t like being at the dentist, I always leave here feeling like they truly cared about making sure I was taken care of (and mimosas and Netflix are an added bonus!). I appreciate this team!!

John Moody (Source: Google)


As a patient with Dr. Seo’s new dental practice, he and his team so far are outstanding! Dr. Seo was very helpful in explaining his observations, answering my questions, and providing recommendations to consider during his exam. He seems very competent, is a straight shooter, and not a salesman. Jerri the dental hygienist has been helping me for years, does a consistently excellent job, and is very knowledgeable. Emily at the front desk is a new addition and very client service focused. I’ll be returning!

Kimberly Stardig (Source: Google)


Dr.Sam and his Staff are caring fun people.. I was able to be seen quickly and efficiently. I came in with a broken tooth.. Unfortunate for Me ..I left his office I good spirits and a smile.. He even called to see how I was after having extraction and bone graft. He also presented to me a temporary retainer with a tooth in it.. So upon leaving I looked like my spunky self .. Did I mention I feel asleep during all this .. That’s a wonderful feeling .. Thanks To Team at PDX Center for Dentistry. Formly Sundberg Center of Dentistry.

Christine (Source: Google)


Jerri has provided excellent cleanings. I have received great care by dentists, Dr. Sundberg and now with Dr. Seo. I had been with Sundberg Dental for almost 10 years. I appreciate Dr. Seo retaining Dr. Sundberg’s staff. I will continue receiving my dental care here with Dr. Seo, Jerri, and receptionist, Shelly. Thank you Sundberg Dentistry and now, PDX Center for Dentistry.

Stan Roman (Source: Google)


Dentist: Dr. Seo, DMD is a General practice dentist who is very professional, fast and has a very good way about him. I would never think about going to anyone else. He recently performed two crown replacements of old crowns (they were about 50 years old). He did an incredible job. The replacement crowns were awesome. No pain, no soreness and the new crowns feel incredible. The laboratory Dr. Seo utilizes, did an incredible job as well. Dental Hygienist: Jeri, the Registered Dental Hygienist, is probably the best in the business. Dental assistants: All were very professional and courteous. They go out of their way to ensure the patient remains as comfortable as possible. Front office: The one front office. or reception staff person, initially is nice enough, but just ask about your insurance coverage and one receives a plethora of attitude and incorrect and non-responsive replies. This is an annoyance, but does not reflect on the overall excellence of the professional patient care staff.

Dawn Kepart (Source: Google)


What a fantastic experience. I felt right at home the moment i called for the first appointment. It was so nice to be able to get right in and have my teeth cleaned on the same day. The hygienist was awesome. So thorough; my teeth feel great. Dr.Seo was calm, kind and answered all of my questions clearly. I would highly recommend this office.

Erik Broderick (Source: Google)


A wire on my retainer broke, and the dental hygienist at Sundberg dentistry did a great job removing and then repairing the wire. In addition, I needed to have a cleaning, and it was a quick, painless procedure. The atmosphere was pleasant, and the employees were quite friendly. If you’re in the Pearl District, head over to Sundberg Dentistry.

Anonymous (Source: Google)


Dr. Seo and his team helped me out with some major tooth pain and got me scheduled and in the office in no time. They’re very friendly and were able to get me feeling better and put together a plan of action to get my whole mouth fixed up. The office is very conveniently located downtown and makes the whole experience much more pleasurable. Highly recommended for anyone in need of a good dentist.

Amanda Gilmore (Source: Google)


Dr. Seo is friendly, patient and very skilled at communicating the options for dental treatment and what to expect when planning a procedure. His front office and hygienist staff are also amazing. The office is comfortable and friendly, and conveniently located downtown. I can’t recommend Dr. Seo highly enough.

Emily Burke (Source: Google)


It’s always hard to say goodbye to a trusted doctor, and we will miss Dr. Sundberg. But Dr. Sam is fantastic! Thoughtful, efficient and making the transition feel totally seamless. The office is still beautiful, the staff still caring and friendly, and the service is still five star! Thank you guys for your care!

Zach Beckett (Source: Google)


I have nothing but great things to say about PDX Center for Dentistry! I’ve been going to Dr. Sam for several years now and he is a true professional. Very personable, knowledgeable, he’s fluent in 3 languages, and has a super gentle touch(which is most important to me because I’m kind of a baby and I fear dental work). The entire staff is friendly, very helpful in explaining the ins and outs, the hygienists are wonderful, and they all really do care about your comfort and well being. I definitely recommend trying them out. 10 out of 10.

Wesley Bateman (Source: Google)


I am recommending this dentist! Not only do you walk in on the making for mimosas, but the staff at the front desk are so helpful and very personable! The dental hygienist I had for my first apportionment didn’t come off judgmental when discussing flossing habits and she cleaned my teeth most efficiently. The new doctor, Dr. Seo, while young is knowledgeable, speaks multiple languages, and treats you like YOU matter, not just your pocketbook.

Lauren Fields (Source: Google)


I have had 3 wonderful appointments with Dr and I am in love with the staff here they treat you basically like family the atmosphere is so warm and welcoming I look forward to coming in every time especially Kim so fast and comfortable in what she is doing I couldn’t see myself going to any other dental office.

Katie Horn (Source: Google)


I have always had teeth that were extremely sensitive to temperature changes, and usually have a really hard time finding dentists that take that seriously. PDX center is extremely accommodating to my sensitivity, which I really appreciate! They also got me in quick when I chipped a tooth!

Evelyn Chan (Source: Google)


I love Gerri the hygienist!! She is delightful and clearly very invested and skilled in what she does. I’ve never had my teeth hand-scaled so meticulously in my life. She did a deep cleaning when I first visited early 2019, and I’ve been looking forward to my regular visits ever since (no kidding, I really do) because I feel assured of my dental health. I haven’t had any procedures done by Dr Seo, but he checks in quickly at the end of each regular cleaning and I’ve no doubt I’m in good hands.

Wade Worthington (Source: Google)


I highly recommend Dr.Seo and his crew. They are very personable and have always done a great job for me. It is such a comfort to know you have the right people working on your teeth when you are sitting in that dentist chair. Jerri the dental hygienist is the very best at cleaning teeth. If you are like me, someone dealing with gum recession, you can do yourself a huge favor by receiving her cleanings. PDX Center for Dentistry is 5 star service all around!

A. S. (Source: Zocdoc)


I loved my visit. Even from before my visit. Even from before my arrival, Shelly made me feel cared for in her communication and effort to get my insurance info correct. I appreciated every person who helped me today – Xrays, cleaning (Jerri is awesome) and all the helpful tips for my trip to Costa Rica! I look forward to my next visit.

C. S. (Source: Google)


The staff here is great and they do the best work I’ve had, from crowns to fillings and cleanings. Things were good when Dr. Sundberg owned the practice but things have felt smoother since Dr. Seo took over. I was especially happy to see that Jerri (hygienist+) stayed on. She does the best cleanings ever. Great new additions to the team, too, like Nancy and others.


At PDX Center for Dentistry, we believe healthy families and healthy teeth begin with excellent family dentistry. Regular visits to our office can help you and your loved ones achieve pristine oral health. Your teeth, your health, and your appearance are our top priority. We utilize cutting-edge techniques and advanced technology to provide your family with an unmatched level of care. From regular checkups to complex restorative procedures, we specialize in top-notch treatments that are safer, more effective, and more comfortable than ever before. Our services are designed to meet your family's needs and even surpass your expectations! We also understand that most people live busy lives. Choosing our family office allows you to schedule back-to-back appointments, saving you a significant amount of time. During a single visit, we can ensure every member of your family maintains a beautiful and healthy smile. Hello! My name is Dr. Samuel Seo. I'm thrilled to be given the opportunity to be your dentist at PDX Center for Dentistry (formerly known as Sundberg Center for Dentistry). To tell you a little bit about me, I was born and raised outside of the US which has enabled me to be fluent in English, Spanish and Korean. I attended Emory University in Atlanta, GA for my undergraduate education and earned my dental degree at Case Western Reserve University in Cleveland, OH. Shortly after graduating, my wife and I decided to move to Portland when an opportunity opened up to work here. It was here where my kids were born. My family has grown to love Portland and call it our home now. Dentistry is my passion. Nothing is more rewarding for me than having a patient see the results of treatment that, in many cases, starts making an immediate impact in his/her life. I am constantly trying to learn more and better myself in becoming the best dentist I can be. With that being said, I also strive to connect with patients at a more personal level. My hope is that I can be your friend in listening to you needs to address your dental concerns. During my spare time, I enjoy watching sports (especially soccer) during the weekend and spending time with my wife and 3 kids! I look forward to meeting you! See you soon!