Organization Active NPI

Macmaster Psychiatric Services a Professional Nursing Corporation

  • Geriatric Psychiatry Physician
  • Mountain House, CA
National Provider Identifier
1174456883
Registry record updated Jun 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Geriatric Psychiatry PhysicianTaxonomy code 2084P0805X
Legal business name
MACMASTER PSYCHIATRIC SERVICES A PROFESSIONAL NURSING CORPORATION
Practice address
1510 S Barker St
Mountain House, CA 95391-1473
Phone
(559) 776-8864
NPI assigned
Jun 4, 2026
Last updated
Jun 4, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 4, 2026

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

Authorized official

Name
Jacob Martin Macmaster, PMHNPNPI 1205636354
Title
Owner
Phone
(559) 776-8864

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Geriatric Psychiatry Physician 2084P0805X NU Primary

Addresses

Primary practice location

1510 S Barker St
Mountain House, CA 95391-1473

Mailing address

1510 S Barker St
Mountain House, CA 95391-1473
Phone (559) 776-8864

National Provider Directory

National Provider Directory

Practitioners & affiliated clinicians

Practitioners 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1780531200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1780531200000",
    "number": "1174456883",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1510 S BARKER ST",
            "city": "MOUNTAIN HOUSE",
            "state": "CA",
            "postal_code": "953911473",
            "telephone_number": "559-776-8864"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1510 S BARKER ST",
            "city": "MOUNTAIN HOUSE",
            "state": "CA",
            "postal_code": "953911473",
            "telephone_number": "559-776-8864"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "MACMASTER PSYCHIATRIC SERVICES A PROFESSIONAL NURSING CORPORATION",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-06-04",
        "last_updated": "2026-06-04",
        "certification_date": "2026-06-04",
        "status": "A",
        "authorized_official_last_name": "MACMASTER",
        "authorized_official_first_name": "JACOB",
        "authorized_official_middle_name": "MARTIN",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "559-776-8864",
        "authorized_official_credential": "PMHNP"
    },
    "taxonomies": [
        {
            "code": "2084P0805X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Geriatric Psychiatry",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Mountain House, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 4, 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.