Mariah Hamilton, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

PA6829 Issued in MA

Practice address

329 Conway St
Greenfield, MA 01301-1521

Phone

(413) 774-6301

Fax

(866) 644-0871

NPI assigned

Oct 31, 2018

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: hamilton.mariah.dfci@direct.partners.masshiway.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Dana-Farber Cancer Institute, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1851333686
  Medicare reassignment NPD
• Massachusetts General Physicians Organization Inc

  • Dermatology Physician
  • Boston, MA
  • NPI 1801874573
  Medicare reassignment NPD
• The General Hospital Corporation

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1023049236
  Medicare reassignment
• Valley Medical Group, P.C.

  • Family Medicine Physician
  • Greenfield, MA
  • NPI 1912924705
  Medicare reassignment
• Dana-Farber Cancer Institute, Inc.

  • Special Hospital
  • Boston, MA
  • NPI 1346433257
  NPD
• Dana-Farber Cancer Institute, Inc.

  • Durable Medical Equipment & Medical Supplies
  • Chestnut Hill, MA
  • NPI 1497429237
  NPD

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

{
    "created_epoch": "1540944000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1104393891",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "329 CONWAY ST",
            "city": "GREENFIELD",
            "state": "MA",
            "postal_code": "013011521",
            "telephone_number": "413-774-6301",
            "fax_number": "866-644-0871"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "329 CONWAY ST",
            "city": "GREENFIELD",
            "state": "MA",
            "postal_code": "013011521",
            "telephone_number": "413-774-6301",
            "fax_number": "866-644-0871"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "238 Northampton St",
            "address_purpose": "LOCATION",
            "city": "Easthampton",
            "state": "MA",
            "postal_code": "010271046",
            "country_code": "US",
            "telephone_number": "413-529-9300",
            "fax_number": "866-644-0870",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "31 Hall Dr",
            "address_purpose": "LOCATION",
            "city": "Amherst",
            "state": "MA",
            "postal_code": "010022751",
            "country_code": "US",
            "telephone_number": "413-256-8561",
            "fax_number": "866-644-0869",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "70 Main St",
            "address_purpose": "LOCATION",
            "city": "Florence",
            "state": "MA",
            "postal_code": "010621466",
            "country_code": "US",
            "telephone_number": "413-586-8400",
            "fax_number": "866-644-0872",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAMILTON",
        "first_name": "MARIAH",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-10-31",
        "last_updated": "2026-07-13",
        "certification_date": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MA",
            "license": "PA6829",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Thomas Hagamen, MD
• Matthew Ryan Hale-Howe
• Maureen A Hall, BA
• Ralph Halsey
• Hamilton Home Health, Inc.
• Zachary Hamilton, DPT
• Hampden & Franklin County Cardiovascular Associates, PC
• Nancy Hanratty, DMD
• Gabrielle Harding
• Natalie Harding, PA-C

• Physician Assistant in Greenfield, MA
• Providers in Greenfield, MA by specialty
• Physician Assistant in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.