Greta Katherine Hammer

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

Practice address

1328 Parkstone LN
Bellingham, WA 98229-2580

Phone

(509) 361-4310

NPI assigned

Aug 6, 2019

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Medicare enrollment (NPD)

Enrolled

Practice roles

Locations

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.

• Lake Whatcom Residential & Treatment Center

  • Community/Behavioral Health Agency
  • Bellingham, WA
  • NPI 1043281736

  Mental Health

  NPD
• Lummi Indian Business Council

  dba Lummi Nation Health Center

  • Counselor
  • Bellingham, WA
  • NPI 1225158769
  NPD
• Lummi Indian Business Council

  dba Lummi Nation Health Center- Physical Therapy

  • Physical Therapist
  • Bellingham, WA
  • NPI 1851414635
  NPD

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

{
    "created_epoch": "1565049600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752624000000",
    "number": "1770138836",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1328 PARKSTONE LN",
            "city": "BELLINGHAM",
            "state": "WA",
            "postal_code": "982292580"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1328 PARKSTONE LN",
            "city": "BELLINGHAM",
            "state": "WA",
            "postal_code": "982292580",
            "telephone_number": "509-361-4310"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3645 E McLeod Rd",
            "address_purpose": "LOCATION",
            "city": "Bellingham",
            "state": "WA",
            "postal_code": "982268700",
            "country_code": "US",
            "telephone_number": "360-676-2220",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3600 Meridian St",
            "address_purpose": "LOCATION",
            "city": "Bellingham",
            "state": "WA",
            "postal_code": "982251756",
            "country_code": "US",
            "telephone_number": "360-676-6000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAMMER",
        "first_name": "GRETA",
        "middle_name": "KATHERINE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-08-06",
        "last_updated": "2025-07-16",
        "certification_date": "2025-07-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Daniel Hamilton
• Laura Hamilton, RN
• Mallory Hamilton, LMHC
• Sheila Ann Hamilton
• Mindy Anne Hamlin, LMP
• Patty Jo Hammer, SUDP
• Emily Anne Hammond, AU.D.
• Elizabeth Marsh Hampton, PT, WCS, BCIA-PMBD
• Jennifer Hampton
• Christine Amos Hancock, M.D.

• Mental Health Counselor in Bellingham, WA
• Providers in Bellingham, WA by specialty
• Mental Health Counselor in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 16, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.