Upper Valley Psychiatry P.L.L.C.

Primary specialty

Health Service Clinic/CenterTaxonomy code 261QH0100X

Legal business name

UPPER VALLEY PSYCHIATRY P.L.L.C.

Practice address

3 Lebanon St Ste 39
Hanover, NH 03755-2158

Phone

(802) 526-4810

Fax

(603) 448-0661

NPI assigned

Aug 14, 2025

Organization subpart

No

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

Authorized official

Name

Dr. Cassie A Kosarek, MDNPI 1114504099

Title

Owner

Phone

(802) 526-4810

Specialties & licenses 1

Addresses

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Cassie A Kosarek, MD

  • Psychiatry Physician
  • Hanover, NH
  • NPI 1114504099
  NPD Authorized official

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

{
    "created_epoch": "1755129600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1773014400000",
    "number": "1417833435",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3 LEBANON ST STE 39",
            "city": "HANOVER",
            "state": "NH",
            "postal_code": "037552196",
            "telephone_number": "802-526-4810",
            "fax_number": "603-448-0661"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3 LEBANON ST STE 39",
            "city": "HANOVER",
            "state": "NH",
            "postal_code": "037552158",
            "telephone_number": "802-526-4810",
            "fax_number": "603-448-0661"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "UPPER VALLEY PSYCHIATRY P.L.L.C.",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-08-14",
        "last_updated": "2026-03-09",
        "certification_date": "2026-03-09",
        "status": "A",
        "authorized_official_last_name": "KOSAREK",
        "authorized_official_first_name": "CASSIE",
        "authorized_official_middle_name": "A",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "802-526-4810",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "261QH0100X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Health Service",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Trustess of Dartmouth College
• Trista Turgeon
• Nancy Turkington, M.D.
• Twin State Wellness
• Upper Valley Dental Sleep Center, PLLC
• Frank Vansanten, PH.D.
• Sara C. Vargo, MSW, LICSW
• Marylee Verdi, APRN
• Tanner Wallace, D.M.D.
• Benita J Walton, M.D.

• Health Service Clinic/Center in Hanover, NH
• Providers in Hanover, NH by specialty
• Health Service Clinic/Center in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 9, 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.