Dr. Er-Jia Mao, DDS, PHD


(9 reviews)
Accepting new patients 16 years of experience Easy scheduling Low wait times


Dr. Er-Jia Mao, DDS, PHD is a Periodontist in Seattle, WA. He specializes in Periodontics, and has 16 years of experience. He graduated from West China University of Medical Sciences.

Dr. Er-Jia Mao, DDS, PHD works at Periodontics Northwest. He is accepting new patients and accepts Delta Dental, and other major insurance plans. Please call ahead to schedule an appointment with Dr. Er-Jia Mao, DDS, PHD and to confirm all accepted insurance plans.


Treatment Frequency

Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.

May Perform

Check your insurance

Ratings & Reviews

Average provider rating


Based on 9 reviews

Time with patient

Accuracy of diagnosis

Listening skills

Clear explanations

Trust in decision making

Post visit follow-up

Office & Staff Evaluation

Office appearance

out of 5

Ease of scheduling

out of 5

Friendly staff

out of 5

Billing matters

out of 5

Average wait time

6 to 10 minutes

Group 24

Leave a review

How was your appointment with Dr. Er-Jia Mao, DDS, PHD?

Patient Reviews

9 reviews

5 star
4 star
3 star
2 star
1 star
Apr 19, 2017
Dr Mau and his staff are awesome and have helped me a great deal to get my gums healthy again.

I have been seeing Dr Mau for several years. I am always super comfortable when visiting him, due to his kind professionalism and his great, friendly staff. I have had other, much less comfortable experiences in the past, but certainly not here....

S. L.

Accepting New Patients Icon Verified patient
Jun 9, 2017
Great Dentist!

Dr. Mao is amazing, thorough and supportive, even when I had an after-hours emergency. Also Callie was skillful and kind.

Lynn P.

Jun 13, 2017
Nitrous is my new experience and my great helper!

Using Nitrous was very helpful, it makes me feel very relaxed, so the anesthetics could work more effective and the cleaning could be perfectly done. I greatly appreciate the advise to use Nitrous, and would recommend other people to try it.

Anonymous A.

Accepting New Patients Icon Verified patient

About Dr. Er-Jia Mao, DDS, PHD


  • Periodontics

Years of Experience

16 years of experience

Languages Spoken

  • English
  • Chinese



NPI Number


Education & Certifications

Medical Education

  • West China University of Medical Sciences - D.D.S.
  • West China University of Medical Sciences - M.S. Oral and Maxillofacial Surgery


  • Oregon Health Sciences University - Periodontics and Dental Implant


Periodontics Northwest

2111 N Northgate Way Ste 215,

Seattle, WA 98133

  • Wednesday 7:30 am - 4:30 pm

Frequently Asked Questions