NPIMap

Individual provider Active NPI

Timothy Hayes Massey, M.D.

  • Orthopaedic Surgery Physician
  • Kirkland, WA
National Provider Identifier
1023088374
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
MD00030689 Issued in WA
Practice address
11821 NE 128TH St
Suite a
Kirkland, WA 98034-7210
Phone
(425) 823-8282
Fax
(425) 823-6696
NPI assigned
Jan 26, 2006
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 2

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X MD00030689 WA Primary
Orthopaedic Surgery of the Spine Physician 207XS0117X MD00030689 WA

Addresses

Primary practice location

11821 NE 128TH St
Suite a
Kirkland, WA 98034-7210

Mailing address

11821 NE 128TH St
Suite a
Kirkland, WA 98034-7210
Phone (425) 823-8282

Other identifiers 3

IdentifierTypeStateIssuer
48820OtherWADEPT. OF LABOR & INDUSTRI
8154072/7040033MedicaidWA
MA6448OtherWAREGENCE BLUE SHIELD NUMBE

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)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Ipp PC Past Accepting new patients
Stanley a. Kopp, M.D., P.S. Orthopaedic Surgery Past Accepting new patients
Washington Orthopedics and Sports Medicine, PC Orthopaedic Surgery of the Spine Past Accepting new patients

Organizations & group practices 3

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": "1138233600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1023088374",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11821 NE 128TH ST",
            "address_2": "SUITE A",
            "city": "KIRKLAND",
            "state": "WA",
            "postal_code": "980347210",
            "telephone_number": "425-823-8282",
            "fax_number": "425-823-6696"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11821 NE 128TH ST",
            "address_2": "SUITE A",
            "city": "KIRKLAND",
            "state": "WA",
            "postal_code": "980347210",
            "telephone_number": "425-823-8282",
            "fax_number": "425-823-6696"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASSEY",
        "first_name": "TIMOTHY",
        "middle_name": "HAYES",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-26",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "WA",
            "license": "MD00030689",
            "primary": true
        },
        {
            "code": "207XS0117X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Orthopaedic Surgery of the Spine",
            "state": "WA",
            "license": "MD00030689",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DEPT. OF LABOR & INDUSTRI",
            "identifier": "48820",
            "state": "WA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "8154072/7040033",
            "state": "WA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "REGENCE BLUE SHIELD NUMBE",
            "identifier": "MA6448",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Kirkland, 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.