Gregory Gannon, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

083728-1 Issued in NY

Practice address

Madigan Army Medical Center 9040 Jackson Ave
Tacoma, WA 98431-8404

Phone

(919) 428-4538

NPI assigned

Oct 6, 2011

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

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

• City Center Psychotherapy Associates LLC

  • Clinical Social Worker
  • Spokane, WA
  • NPI 1659247302
  NPD Authorized official

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

{
    "created_epoch": "1317859200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784246400000",
    "number": "1306120530",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE",
            "city": "TACOMA",
            "state": "WA",
            "postal_code": "984318404",
            "telephone_number": "919-428-4538"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "MADIGAN ARMY MEDICAL CENTER 9040 JACKSON AVE",
            "city": "TACOMA",
            "state": "WA",
            "postal_code": "984318404",
            "telephone_number": "919-428-4538"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GANNON",
        "first_name": "GREGORY",
        "name_prefix": "Mr.",
        "credential": "LCSW",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2011-10-06",
        "last_updated": "2026-07-17",
        "certification_date": "2026-07-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "NY",
            "license": "082205-1",
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "WA",
            "license": "SWI.LW.70069451",
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NY",
            "license": "083728-1",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Anna Gambish
• Melissa L Gamble, PAC
• Melvin Leshawn Gamble
• Nicole Gan, RBT
• Kevin K Gandhi, M.D.
• Nikki Onawa Gant, LMP
• Robert W Gantz, ARPN
• Anita Ruth Ganz, CRNA
• Joanna Gao, PAC
• Weiqiang Gao, M.D.

• Clinical Social Worker in Tacoma, WA
• Providers in Tacoma, WA by specialty
• Clinical Social Worker in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 17, 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.