Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Er-Jia Mao, DDS, PHD

Individual provider Periodontics · NPI 1326044058

Dr. Er-Jia Mao, DDS, PHD is a Periodontics in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2005.

Licensed in
WA
In the registry since
2005
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

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Practice location Address checks out

2111 N Northgate Way Ste 215
Seattle, WA 98133-9018
Phone: (206) 367-6767
Fax: (206) 367-4788
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Periodontics (primary) Taxonomy 1223P0300X · Licence DE8464 (WA)

Record details

NPI number1326044058
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS , PHD
Sole proprietorNo
NPI enumeratedJune 27, 2005
Last updated in NPPESJuly 13, 2026

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