Michelle Hammer, NP

Primary specialty

Gerontology Nurse PractitionerTaxonomy code 363LG0600X

License

340632 Issued in NY

Practice address

122 W 27TH St
6TH Floor
New York, NY 10001-6227

Phone

(212) 691-2900

NPI assigned

Mar 8, 2007

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

Medicare enrollment (NPD)

Not enrolled

Credentials

Nurse Practitioner

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 and National Provider Directory roles.

• Greenwich House Chemical Dependency Program

  • Community/Behavioral Health Agency
  • New York, NY
  • NPI 1225405640
  NPD (past)
• Greenwich House Inc

  • Adult Psychiatric/Mental Health Registered Nurse
  • New York, NY
  • NPI 1730207119
  NPD (past)

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

{
    "created_epoch": "1173312000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1225169584",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2200 N CENTRAL RD",
            "address_2": "#15E",
            "city": "FORT LEE",
            "state": "NJ",
            "postal_code": "070247557",
            "telephone_number": "917-716-7945"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "122 W 27TH ST",
            "address_2": "6TH FLOOR",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100016227",
            "telephone_number": "212-691-2900"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAMMER",
        "first_name": "MICHELLE",
        "name_prefix": "Mrs.",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-03-08",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "NY",
            "license": "340632",
            "primary": true
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "NY",
            "license": "400939",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• David Matthew Hammer, LMSW
• Elizabeth Rose Hammer, LMSW
• Gail Dara Hammer, L.C.S.W.
• Glenn S. Hammer, M.D.
• Ida Elisabeth Hammer, LMSW
• Rachel Hammer
• Christa Hedwig Hammerling, PHD
• Hillel Sander Hammerman, M.D.
• Ross Martin Hammerman
• Jennifer Lynn Hammers, DO

• Gerontology Nurse Practitioner in New York, NY
• Providers in New York, NY by specialty
• Gerontology Nurse Practitioner in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.