Mark F Geer

Primary specialty

PsychologistTaxonomy code 103T00000X

License

2969 Issued in MA

Practice address

11 River St
Colony Care Behavioral Health
Wellesley, MA 02481-2098

Phone

(781) 431-1177

Fax

(781) 431-1181

NPI assigned

Mar 1, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• First Psychiatric Planners, Inc

  dba Bournewood Hospital

  • Psychiatric Hospital
  • Brookline, MA
  • NPI 1093714412
  NPD

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

{
    "created_epoch": "1141171200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1609843507",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11 RIVER ST",
            "city": "WELLESLEY",
            "state": "MA",
            "postal_code": "024812098",
            "telephone_number": "781-431-1177",
            "fax_number": "781-431-1181"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11 RIVER ST",
            "address_2": "COLONY CARE BEHAVIORAL HEALTH",
            "city": "WELLESLEY",
            "state": "MA",
            "postal_code": "024812098",
            "telephone_number": "781-431-1177",
            "fax_number": "781-431-1181"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GEER",
        "first_name": "MARK",
        "middle_name": "F",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-01",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "MA",
            "license": "2969",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0510645",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Tamar Garcia, MD
• Paige Garson
• Brendan Patrick Gates, PT, DPT, CSCS
• Kimberly Davis Gatof, PH.D.
• Emily Gaukhman
• Gary Joseph Geissler, P.T., A.T.C.
• Suzanne F. Gendel, D.D.S.
• Christine M Germanotta, MSW, LICSW
• Arthur N Gertler, M.D.
• Michele V Gibbons-Carr

• Psychologist in Wellesley, MA
• Providers in Wellesley, MA by specialty
• Psychologist in Massachusetts

• 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.