NPIMap

Organization Active NPI

Dennis Marcus MD PC

  • Psychiatric/Mental Health Nurse Practitioner
  • Valatie, NY
National Provider Identifier
1003876020
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X
Legal business name
DENNIS MARCUS MD PC
Practice address
2880 Route 9
Valatie, NY 12184
Phone
(518) 758-6922
NPI assigned
Mar 24, 2006
Last updated
Sep 11, 2025By the provider in NPPES
Organization subpart
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

Authorized official

Name
Dr. Dennis Marcus, MD
Title
Executive Director
Phone
(413) 528-1845

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Psychologist 103T00000X NU
Social Worker 104100000X NU
Psychiatry Physician 2084P0800X NU
Psychiatric/Mental Health Nurse Practitioner 363LP0808X NU Primary

Addresses

Primary practice location

2880 Route 9
Valatie, NY 12184

Mailing address

20 Lewis Ave
GT Barrington, MA 01230
Phone (413) 528-1845

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 33

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 33

NPI Registry JSON

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

{
    "created_epoch": "1143158400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1003876020",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20 LEWIS AVE",
            "city": "GT BARRINGTON",
            "state": "MA",
            "postal_code": "01230",
            "telephone_number": "413-528-1845",
            "fax_number": "413-528-3667"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2880 ROUTE 9",
            "city": "VALATIE",
            "state": "NY",
            "postal_code": "12184",
            "telephone_number": "518-758-6922"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "DENNIS MARCUS MD PC",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-03-24",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "MARCUS",
        "authorized_official_first_name": "DENNIS",
        "authorized_official_title_or_position": "EXECUTIVE DIRECTOR",
        "authorized_official_telephone_number": "413-528-1845",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Valatie, NY

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.