Pioneer Valley Psychiatry PLLC

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

Legal business name

PIONEER VALLEY PSYCHIATRY PLLC

Practice address

190 Russell St
Hadley, MA 01035-9542

Phone

(636) 383-3171

NPI assigned

Mar 3, 2026

Organization subpart

No

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

Authorized official

Name

John J Diggins, MD

Title

President

Phone

(636) 383-3171

Specialties & licenses 1

Addresses

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

{
    "created_epoch": "1772496000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1772496000000",
    "number": "1669327706",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 343",
            "city": "HADLEY",
            "state": "MA",
            "postal_code": "010350343"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "190 RUSSELL ST",
            "city": "HADLEY",
            "state": "MA",
            "postal_code": "010359542",
            "telephone_number": "636-383-3171"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "PIONEER VALLEY PSYCHIATRY PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-03-03",
        "last_updated": "2026-03-03",
        "certification_date": "2026-03-03",
        "status": "A",
        "authorized_official_last_name": "DIGGINS",
        "authorized_official_first_name": "JOHN",
        "authorized_official_middle_name": "J",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "636-383-3171",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Precision Dental Associates LLC
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• Psychiatry Physician in Hadley, MA
• Providers in Hadley, MA by specialty
• Psychiatry Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 3, 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.