Individual provider Active NPI

Mark J Adair, PHD

  • Clinical Psychologist
  • Montpelier, VT
National Provider Identifier
1245450568
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical PsychologistTaxonomy code 103TC0700X
License
0049131 Issued in NY
Practice address
166 C Elm St
Montpelier, VT 05602
Phone
(802) 223-3958
NPI assigned
Apr 27, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Psychologist 103TC0700X 0480000172 VT
Clinical Psychologist 103TC0700X 0049131 NY Primary
Psychoanalyst 102L00000X VT

Addresses

Primary practice location

166 C Elm St
Montpelier, VT 05602

Mailing address

259 Norton Rd
Worcester, VT 05682-9792
Phone (802) 223-2641

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)
Not enrolled
Credentials
Doctor of Philosophy

State licenses

LicenseStateTypeSpecialty
098000214VTMDPsychoanalyst
0049131NYMDClinical Psychologist
0480000172VTMDClinical Psychologist

NPI Registry JSON

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

{
    "created_epoch": "1177632000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1245450568",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "259 NORTON RD",
            "city": "WORCESTER",
            "state": "VT",
            "postal_code": "056829792",
            "telephone_number": "802-223-2641",
            "fax_number": "802-229-6348"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "166 C ELM ST",
            "city": "MONTPELIER",
            "state": "VT",
            "postal_code": "05602",
            "telephone_number": "802-223-3958"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ADAIR",
        "first_name": "MARK",
        "middle_name": "J",
        "name_prefix": "Dr.",
        "credential": "PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-04-27",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "VT",
            "license": "0480000172",
            "primary": false
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "NY",
            "license": "0049131",
            "primary": true
        },
        {
            "code": "102L00000X",
            "taxonomy_group": "",
            "desc": "Psychoanalyst",
            "state": "VT",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Montpelier, VT

Sources for this page

  • 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.