Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Er-Jia Mao, DDS, PHD

Periodontics in Seattle, WA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1326044058

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Registry record

Entity type Individual (Type 1)

Name Dr. Er-Jia Mao

Credential DDS, PHD

Sex Male

Practice address 2111 N Northgate Way, Ste 215, Seattle, WA, 98133

Phone (206) 367-6767

Fax (206) 367-4788

Enumeration date Jun 27, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223P0300X Periodontics Dental Providers · License DE8464 (WA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Er-Jia Mao's NPI record?

Cross-check NPI 1326044058 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1326044058 active?

Yes, as of the latest NPPES snapshot, NPI 1326044058 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.