Individual provider Active NPI

ER-Jia Mao, DDS, PHD

  • Periodontics
  • Seattle, WA
National Provider Identifier
1326044058
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
PeriodonticsTaxonomy code 1223P0300X
License
DE8464 Issued in WA
Practice address
2111 N Northgate Way
Ste 215
Seattle, WA 98133-9018
Phone
(206) 367-6767
Fax
(206) 367-4788
NPI assigned
Jun 27, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Periodontics 1223P0300X DE8464 WA Primary

Addresses

Primary practice location

2111 N Northgate Way
Ste 215
Seattle, WA 98133-9018

Mailing address

2111 N Northgate Way
Ste 215
Seattle, WA 98133
Phone (206) 367-6767

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
Credentials
Doctor of Philosophy

State licenses

LicenseStateTypeSpecialty
DE8464WAMDPeriodontist

Practice roles

OrganizationSpecialtyStatusNew patients
Mao & Shaya PLLC Periodontics PastSince Feb 19, 2023 Accepting new patients

Organizations & group practices 1

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1119830400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1326044058",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2111 N NORTHGATE WAY",
            "address_2": "STE 215",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "98133",
            "telephone_number": "206-367-6767",
            "fax_number": "206-367-4788"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2111 N NORTHGATE WAY",
            "address_2": "STE 215",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981339018",
            "telephone_number": "206-367-6767",
            "fax_number": "206-367-4788"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAO",
        "first_name": "ER-JIA",
        "name_prefix": "Dr.",
        "credential": "DDS, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-06-27",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223P0300X",
            "taxonomy_group": "",
            "desc": "Dentist, Periodontics",
            "state": "WA",
            "license": "DE8464",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.