In order to provide our patients and visitors with the most accurate and beneficial information, we only post comments and star ratings relevant to a specific provider or office once they have received a minimum of 30 surveys within the previous 12 months.

Mary A Yoo, DDS

General Dentist

4.8 out of 5.0
465 Ratings, 140 Comments

Dr. Yoo’s Biography

Dr. Yoo studied music performance before making the switch into dentistry. It was her professor who suggested the field as she looked into a change in career. After interviewing several dentists, she found herself intrigued. Dr. Yoo brings her energy, selflessness, and a great sense of humor into Willamette Dental Group. She always provides the time and understanding patients need to feel relaxed in her care.

Committed to service, she has helped those in need throughout Napal, Malawi, and most recently, Fiji. She also enjoys travel and outdoor adventures, creating moments with family and friends, and supporting the arts.


Education

  • Dental School – Loma Linda University School of Dentistry

Specialty Training

  • Cultural Sensitivity Training

Medicaid

  • Accepts Oregon Health Plan
  • Closed to New Pediatric and Adult Oregon Health Plan Patients

Languages Spoken

  • English

Patient Experience Survey Results

Our patient rating scores represent an average of all responses from actual Willamette Dental patients randomly surveyed by nationally-recognized patient experience firm, NRC Health.

Learn more about our patient reviews
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Patient Comments

Patient comments are gathered from our NRC Health Patient Experience Survey. Patients are de-identified for confidentiality and patient privacy.

Learn more about our survey

Nov 22, 2025

5

It took a long time and the office is way to cold to be there for 2 hours.

Nov 22, 2025

5

Dr.Yoo is the best dentist I ever had. Wish I had found her and Willamette dental years ago. Thank so much .

Nov 20, 2025

5

They do a great job.

Nov 20, 2025

5

I had a tooth pulled and it was virtually painless and took such a short time. Everything went fast and efficiently and the team was excellent!

Nov 14, 2025

5

Got me in very fast and provided helpful information

Nov 10, 2025

5

Dr. Yoo and her assistants are very professional, kind, and explain things throughly. Extremely impressed with them. Very different from the last dental provider I had before Dr. Yoo.

Nov 8, 2025

5

Great experience with the dental hygienist? Not sure if that's the right title. But the guy that did the x-rays and cleaned my teeth. Just the right amount of interaction, perfesionional and personal. I also really like my Dentist.

Nov 7, 2025

5

The staff cared for me and my treatment and I felt comfortable with this appointment. Dr Yoo was great and wanted to treat me right away. I am glad I was able to get the right treatment and diagnosis.

Nov 8, 2025

5

Comfortable and friendly.

Nov 7, 2025

5

Professional, kind, caring, and courteous would be words that would describe the team at Willamette Dental Lancaster Salem office.

Nov 6, 2025

5

I love this office and all of the staff!!

Oct 31, 2025

5

Staff was very nice

Oct 27, 2025

5

We need more frequent appointments, Sometimes we have to wait a long time. Bilingual staff, thank you.

Oct 18, 2025

5

Always friendly! Love our Willamette dental

Oct 18, 2025

5

Dr. Yoo and Natasha made me feel heard and valued. They were very sensitive to my comfort. Dr. You seemed very intelligent and relaxed her treatment plan and the reasoning behind it in a way that made me feel confident in my care

Oct 16, 2025

5

I was glad to finally get my appointment scheduled, it took awhile! I will say everyone was very polite and professional!

Oct 13, 2025

5

My providers were familiar with my survey and my history. They were relaxed and focused on my needs.

Oct 7, 2025

5

Dr. Yoo is the best WD dentist in Salem.

Oct 6, 2025

5

Ron was an absolute pleasure to work with. He was very careful not to cause any undue pain and wanted me to be happy with the results. Dr. Yoo is also always a pleasure to work with! Thank you for taking such good care of me.

Oct 4, 2025

5

Dr Yoo is kind patient and gentle.

Sep 26, 2025

5

Great service!

Sep 26, 2025

5

Everyone was knowledgeable. They were friendly and explained everything with so much detail. Made me feel welcomed. V

Sep 14, 2025

5

Very professional. Highly recommend

Sep 13, 2025

5

There are very kind professional manners.

Sep 12, 2025

5

The reason I wasn't able to get an appointment in a timely manner is out of Willamette's control and I understand that.

Aug 29, 2025

5

Very nice and professional service

Aug 24, 2025

5

very good.l

Aug 23, 2025

5

Everyone is kind and professional and helpful!

Aug 22, 2025

5

Very friendly. Got my appointment right away. Very professional

Aug 18, 2025

5

They were very polite and also they were some on time and didn't stay that much sitting down I recommend you with my family.

Aug 15, 2025

5

Dr. Yoo was amazing! She explained the problems I have thoroughly with care. I could tell that she wanted the best for me.

Aug 15, 2025

5

All personnel were pleasant, professional and friendly. Truly enjoyed my visit.

Aug 14, 2025

5

Very professional and courteous staff.

Aug 7, 2025

5

When I called to make an appointment they were able to schedule me for the following week. They even called me back to reschedule an appointment for my daughter. Dr. Yoo is friendly and efficient. She is an amazing dentist.

Aug 7, 2025

5

The Dr. was super duper nice and polite and apologetic even though I'm the one who asked for no numbing. My only negative about anything was that there is nowhere to go on Sunday. ER's don't do dental so I waited 24 hours and there may have been a greater risk of tooth death now and what not. There needs to be somewhere to go every single day in the event of true emergencies.

Aug 4, 2025

5

Great crew!!!

Aug 4, 2025

5

Wonderful staff, everyone is very friendly and helpful.

Aug 3, 2025

5

Always love willamette dental for my family. Great service and great dental care.

Jul 31, 2025

5

Well, thank you very much for your attention to the patient, very good, thank you.

Jul 27, 2025

5

Dr Yoo is the best dentist I have ever had . Sierra is such an amazing hygienist, we love her .

Jul 18, 2025

5

Appreciate respectful answers about my reschedule appointment I cancel my appointment. and they call me back to reschedule right away

Jul 14, 2025

5

Nice higienist and dental assistant Nice work and nice staff

Jul 15, 2025

5

good people. good staff. worth the drive.

Jul 13, 2025

5

The woman who numbed my upper two front teeth did an excellent job. That is usually very painful and her method was not. I wish I could remember her name, I'm sorry I can't.

Jul 4, 2025

5

We love Dr. Yoo. She's great and we enjoy going to her and Willamette it's the best ! Everyone is so nice and they all do a wonderful job. Thank you so much

Jul 3, 2025

5

I appreciate how quickly I got an appointment. She squeezed me in her busy schedule to do a adjustment to my lower denture. The denturest, i think that's his position, is stretched thin . I wouldn't have been able to see him for the adjustment for a month!! Which is a long time to be in pain over a simple adjustment. I really appreciate the team taking it on. Fyi you need more denturest then just one. A month out for an appointment is crazy for just an adjustment.

Jul 9, 2025

5

Thank you for fitting me in and checking my mouth that was giving me pain ?. I apriciate you.

Jul 6, 2025

5

Very pleased

Jul 4, 2025

5

The dental hygienist was wonderful!

Jul 2, 2025

5

It was fine. Never very fun to get a crown on, but it was as pleasant as possible. I did have quite a lot of pain of a few days, but I think that is normal.

Jul 1, 2025

5

Thank you

Jun 30, 2025

5

Dr. Yoo is very informative and kind to my son. The staff who assisted her are very helpful as well. They explained everything to my son before doing anything so my son is aware what is going to happen

Jun 23, 2025

5

The hygienist was especially thorough. Both the hygienist and dentist provided excellent information about my dental care and in response to any questions I had.

Jun 16, 2025

5

Dr. Yoo is the best dentist I've ever had and her staff is excellent too.

Jun 14, 2025

1

Your scheduling is the worst. Never appointments available when notice comes for yearly checkups. Always need to callback because person on the phone can only go out so far on the calendar. Scheduled 12 month checkup always turns into 14 or 15 month checkup. DO BETTER!

Jun 14, 2025

4

Dr Yoo was totally different than my earlier experience. She apologized for being rough this time.

Jun 14, 2025

5

I really enjoyed, not only the professionalism of the staff, but the personability. They were great to speak with and made me comfortable.

Jun 14, 2025

4

The dental hygienist I had was the best I've ever had. Super informational and educational while he simultaneously was doing his job. And I was just super impressed. I've never had a dental hygienist that was so educational in explaining things the way he did. So anyway, super, super impressed.

Jun 8, 2025

5

Wonderful team. So kinda and good with young kids, and for my appointments they were so courteous about my anxiety about being at the dentist and were so kind.

Jun 7, 2025

5

Mary Yoo is an awesome Dentist. The Hygienist did a great job! Very happy with my experience.

Jun 6, 2025

5

Dr. Yoo and her team did a wonderful job. The procedure went very smoothly. They had told me what to expect. After the procedure, they told me what to do to help my care. Everyone was so friendly, so professional. Highly, highly recommend them. I can't think of anything to improve it. It was just a terrific experience. Thank you, Dr. Yoo and your team for everything. I really appreciate all of your kind gestures and time and effort.

Jun 6, 2025

5

I always enjoy coming into this office.

Jun 7, 2025

5

The team was fantastic. Quick and efficient. Kept me informed and conscious of any discomfort.

Jun 2, 2025

5

Everyone is so professional and I really appreciate it

May 31, 2025

5

Dr. Mary Yoo is extraordinary as is the entire staff. Great care and great customer service.

May 31, 2025

5

They have great team work

May 19, 2025

5

Thank you all very much. Excellent customer service.

May 11, 2025

5

Ron was amazing as always. Dr. Yoo is the best!

May 10, 2025

5

Very friendly and helpful staff

May 9, 2025

5

Ron was such a great hygienist. Dr Yoo is the best dentist I have ever had . Natasha was such an amazing assistant. I loved the whole team .

May 7, 2025

5

I am very happy with the care I receive from Dr. Yoo and her team.

May 3, 2025

5

Dr. Yoo and staff make going to the dentist fun!

May 3, 2025

5

The entire experience was honest and understood easily. EVERYONE was professional at all times. Incredibly pleasant experience. A role model for what to do right. Thank you for your time.

May 1, 2025

5

The team that helped during my emergency appointment were extremely friendly and supportive. Great work!

Apr 30, 2025

5

Very quick and helpfully

Apr 28, 2025

5

All of the staff that i worked with were all great

Apr 27, 2025

5

I always have a great experience using Willamette Dental for my dental needs

Apr 27, 2025

5

Dr. Yoo and her hygienist were wonderful and caring.

Apr 22, 2025

5

I had questions answered about my dental health, that I had asked other providers many times. And the detail in which it was explained. I couldn't have asked for better care.

Apr 21, 2025

5

All around great clinic with amazing staff!

Apr 21, 2025

5

They were very nice and professional

Apr 18, 2025

5

Great job

Apr 18, 2025

5

No complaints. Excellent care as always

Apr 16, 2025

5

Not only were my dental hygienist and Dr. Yoo incredible to work with (engaging conversations) but informative! Dr Yoo took the time to explain the anatomical structure of the jaw and connective tissues. She also spoke with me (at length) about TMJ, teeth alignment. As well as how my current aligners would be better suited for a more hands-on approach. I appreciated the enlightening conversation and the time the staff took with me.

Apr 14, 2025

5

My provider and my hygienist and the office staff are fantastic.

Apr 14, 2025

5

Dr. Yoo is great and even made time for a question about my own car and put in an order and got the panoramic pictures to be done so I could be referred to ortho. I really appreciate her going above and beyond! Fantastic service

Apr 11, 2025

5

Appreciated both the hygienist and the Dr giving tips on ways to use Waterpik and types of mouth guards.

Apr 9, 2025

5

Staff and providers were great and very attentive . Explained everything that was going to be done. Step by step and gave me options. I highly recommend coming here .

Apr 7, 2025

5

Great customer service

Apr 6, 2025

5

Very caring and patient centered as well as professional. Co-dentist even held my hand. Thank you

Apr 5, 2025

5

Yeah, the appointment that he was given for his toothache is too far out. So we're waiting and hoping for a cancellation.

Apr 3, 2025

5

The assistant was amazing same with the dentist they both worked as a team i want them 2 only to help me with future dental work

Apr 3, 2025

5

I enjoyed my experience from beginning to end.

Mar 29, 2025

5

Dr Yoo is the best ever. The hygienist was excellent and gentle.

Mar 29, 2025

5

Very professional and friendly and efficient. Appreciate the help.

Mar 28, 2025

5

Dr Yoo is great! The whole team worked seamlessly. I'm very happy to be their patient!

Mar 27, 2025

5

Everyone was very polite. The professionals talked me through what they were doing and explained why they were doing it. I felt seen and respected as a patient from beginning to end. 10/10

Mar 20, 2025

5

Our family has seen Dr. Yoo for dental care for 20+ years. I can't imagine receiving the high level of care that she provides from any other Dentist. That's why we stick with her and Willamette Dental. The "merging" with Delta Dental has been a bit rocky, but assuming leadership figures things out, we might possibly stick with her for another 20 years, if she doesn't retire.... ;-)

Mar 20, 2025

4

Keep up the good work

Mar 16, 2025

5

Dr. Yoo is the best dentist ever.

Mar 13, 2025

5

love my dentist and the staff too!!! Delta dental accounting is inept!!!

Mar 11, 2025

5

So grateful to have found such an excellent dental practice. At each point of contact, appreciated the courteous, knowledgeable, and professional care that was provided. Thank you!

Mar 10, 2025

5

I really appreciate the details and time given to my concern on tooth.

Mar 7, 2025

5

The staff, hygienist, radiologist, and dentist was excellent. Thank you

Mar 2, 2025

5

I have never felt more at ease at a dental practice as I have at Willamette Dental.

Mar 2, 2025

5

I like so much the service and attention

Feb 27, 2025

5

Dr Yoo is amazing!

Feb 24, 2025

5

The dental assistant really helped me because I was panicking in an anxiety moment. I didn't have much hope of actually getting help, but she pushed through every wall I put up as fast as I put it up. I am very thankful for everything.

Feb 19, 2025

5

The entire staff made is pleasant to visit the dentist office. My husband and I were both very pleased with our treatment there.

Feb 19, 2025

5

Dr. Yoo and her support staff are the best I have ever had in my entire life.

Feb 19, 2025

5

Yes, I saw Dr. Mary Yu. She is absolutely amazing. She is very gentle. She is quick. She has little hands and she is always so nice and just a very positive person. I just really enjoy her being my dentist.

Feb 9, 2025

5

Difficult to get an appointment in a timely manner.

Feb 8, 2025

5

We really appreciated that the doctor talked directly to our son who is 7 years old and talked to him like he was the one listening and that he was a part of the care and we just really appreciated that. Thank you.

Feb 6, 2025

5

Dr Yoo is always friendly and professional. She is fast and thorough she did an amazing job as always

Feb 6, 2025

5

It was fine. It was not the outcome I wanted, but that's on me.

Feb 3, 2025

5

I love Dr Yoo and the staff at the Salem Lancaster office!!

Jan 31, 2025

5

Both doctor and assistant were professional, diligent and attentive to my concerns and pain. I greatly appreciate their help.

Jan 29, 2025

5

Had a filling broke off. They were able to correct it as soon as possible. So happy with my experience. Staff were so nice and answered all my questions. Will recommend to everyone. Thank you Willamette Dental.

Jan 27, 2025

5

Thanks

Jan 24, 2025

3

people in the waiting room with phone speakers on blast. No respect for others in the room. There should be a policy, no cell phones in the office!!!

Jan 23, 2025

5

I like to thank the doctor and the assistant who helped me from the day 1 till my appointment with smile and so much kindness

Jan 19, 2025

5

Myself and my four kids were all seen in one morning for cleanings. Everyone from the receptionists, hygienists, dentist, and the checkout staff were so kind and warm. We had a great experience!

Jan 16, 2025

5

This was the best dentists vist that I have ever had. The team were incredibly attentive, never condensending, and were able to produce results that I can only describe as amazing. Thank you again to everyone at Willamette dental! You really improved my outlook on life.

Jan 14, 2025

5

Enjoy the staff

Jan 11, 2025

5

Hi, my name is John and my doctor is Dr. Yoo. She is an excellent doctor. I am glad to have a dental for my provider like dental, Willamette Dental and especially Dr. Yoo. Thank you very much for what you do for me. Have a nice day. Bye bye.

Jan 11, 2025

5

Mary Yoo is the best dentist I've ever had. Her and her entire team are the most skilled and have uplifting personalities that each always make us feel at ease.

Jan 10, 2025

5

Very pleasant place

Dec 30, 2024

5

Friendly, professional, helpful

Dec 26, 2024

5

I'm so glad the Doctor could squeeze me in to relieve my pain before the holidays. I know it probably made her day way more hectic than it needed to be. Mary went above and beyond to provide great care, and I really appreciate it.

Dec 22, 2024

5

Dr. Yoo is so kind and caring and gentle. She really listens and is so compassion. She made sure I was comfortable and even offered me a blanket because it was so cold in the office and kept checking on me every few minutes during the appointment to make sure I was ok and see if I needed anything. She is the best Dr I have seen and this experience is completely opposite of the past experiences I have had when I first began coming to Willamette. I would recommend Dr. Yoo to anyone especially anyone with anxiety when it comes to dental work. She has been nothing but kind and understanding everytime I have met with her.

Dec 21, 2024

5

The best I've ever Known. I had a sore tooth. I did not get in immediately but next day can you believe it? My toothache was taken care of beautifully much less pain the next day and yes, all of my children receive dentistry there as well. Great job people

Dec 20, 2024

5

Dental hygienist was a little rude. He could have been more friendly and personable.

Dec 18, 2024

5

I love getting to see Dr Yoo. She has been my dentist for years and I love catching up with her.

Dec 16, 2024

5

The staff are great. They make the visit as pleasant as it can be in a dental office. Dr Yoo and her crew were awesome!

Dec 16, 2024

5

The dental hygienist Richard was great! Very likable and helpful! Dr. Yoo was personable and friendly! Richard and Dr. Yoo are a great team!

Dec 15, 2024

5

Everyone is so friendly. Love the work flow at the office

Dec 13, 2024

5

I was able to get in earlier for my exam, but I have problems with my teeth and need a follow-up appointment for filling and crown and no appointments available. I'm in pain. I need an appointment. Thank you.

Dec 13, 2024

5

It was fantastic!

Dec 12, 2024

5

You have a well organized programme. We appreciate the care and friendlyness of the staff, technicians and doctor. Thank you.

Dec 9, 2024

5

I have known Dr Yoo for over 20 years. She is the absolute best! I drive from Albany to Salem just to see her!

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