NPPES file of Aug 9, 2026

Er-Jia Mao, DDS, PHD

Periodontics · Seattle, WA

Er-Jia Mao, DDS, PHD is a periodontics with a practice address in Seattle, Washington, and NPI 1326044058, issued on Jun 27, 2005. Check the license (Washington DE8464, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326044058
Name
Er-Jia Mao
Credential
DDS, PHD
Primary taxonomy
Periodontics 1223P0300X
License number
DE8464 WA
Self-reported in NPPES; status is on the state search
Practice location
2111 N Northgate Way, Seattle, WA 98133
Phone
(206) 367-6767
Enumerated
Jun 27, 2005
Record last updated
Jul 13, 2026
Fax
(206) 367-4788
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2111 N Northgate Way

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joshua Farahnik, NDNaturopath1285353821
  2. Sharon Fenton, CDPCounselor1689880783
  3. Rosa Johnson, ARNP, MNPsychiatric/Mental Health Nurse Practitioner1063410181
  4. Julie Myers, LICSWClinical Social Worker1548378185
  5. Jason Pehling, DDS, MSGeneral Practice Dentistry1962457036
  6. Joe Rodin, L.M.P.Mechanotherapist1538322292

Verify Er-Jia Mao in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this profession
    Search for license DE8464    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Washington license search

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47% fewer Medicare Part D claims than the average periodontics in 2024

147 Medicare Part D claims for 94 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 14 claims were for opioids.

  1. Er-Jia Mao147
  2. Specialty average277

Most prescribed

  1. Amoxicillin81 claims
  2. Chlorhexidine Gluconate23 claims
  3. Clindamycin Hcl14 claims
  4. Acetaminophen-Codeine12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $1,428.35

4 payments; by number, the most common kind was food and beverage; the largest payer was Straumann USA LLC. The 2,966 providers of this specialty with any payment received $1,338.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Er-Jia Mao$1,428.35
  2. Specialty average$1,338.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Periodontics providers in Washington

There are 184 periodontics records in Washington.

All 184 in Washington → Every provider in Seattle →

Other periodontics records in Washington

  1. Jessica Adams, DDS MSDSeattle, WA1730460924
  2. Steven Aeschliman, D.D.S.Spokane, WA1538256854
  3. Peter Agnos, D.D.S.Everett, WA1689659245
  4. Ken Akimoto, DDSIssaquah, WA1992811541
  5. Huda Albather, DDS,MDS,MPHBellevue, WA1114049574
  6. Abdullah Alkanan, BDSKennewick, WA1407274202
  7. Charles Anderegg, DDSBellevue, WA1942397435
  8. Lena Arvidson, DDS, MSBainbridge Island, WA1255325247
  9. David Au-Yeung, DMDIssaquah, WA1982841425
  10. David Baker, D.D.S.Bellingham, WA1669594628

Common questions

What is Er-Jia Mao, DDS, PHD's NPI number?

Er-Jia Mao, DDS, PHD's National Provider Identifier (NPI) is 1326044058, issued on Jun 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Er-Jia Mao, DDS, PHD located?

The NPPES record lists a practice address at 2111 N Northgate Way, Seattle, WA, 98133. Phone: (206) 367-6767. Providers update this record themselves, so call before visiting.

How can I verify Er-Jia Mao, DDS, PHD's license?

NPPES lists Washington license number DE8464, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does Er-Jia Mao, DDS, PHD prescribe under Medicare Part D?

In 2024, Er-Jia Mao, DDS, PHD had 147 Medicare Part D claims for 94 beneficiaries; the average among periodontics prescribers was 277. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.