William Woodward Nelligan, PA

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

PA2652 Issued in ME

Practice address

22 Bramhall St
Portland, ME 04102-3134

Phone

(207) 662-2179

Fax

(207) 662-6326

NPI assigned

Mar 13, 2023

Sex

Male

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 ME

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

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: wnelligan598412@direct.mmc.mainehealth.org

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.

• Mainehealth

  • Psychiatric Hospital
  • Westbrook, ME
  • NPI 1790265502
  Medicare reassignment
• Mainehealth

  • Community/Retail Pharmacy
  • Portland, ME
  • NPI 1013868181
  NPD
• Mainehealth

  • Pediatric Critical Care Medicine Physician
  • Portland, ME
  • NPI 1265536817
  NPD

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

{
    "created_epoch": "1678665600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746576000000",
    "number": "1316648843",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "22 BRAMHALL ST",
            "city": "PORTLAND",
            "state": "ME",
            "postal_code": "041023134",
            "telephone_number": "207-662-2179",
            "fax_number": "207-662-6326"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "22 BRAMHALL ST",
            "city": "PORTLAND",
            "state": "ME",
            "postal_code": "041023134",
            "telephone_number": "207-662-2179",
            "fax_number": "207-662-6326"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "24 Francesca Ave Apt 2",
            "address_purpose": "LOCATION",
            "city": "Somerville",
            "state": "MA",
            "postal_code": "021442002",
            "country_code": "US",
            "telephone_number": "207-831-9833",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NELLIGAN",
        "first_name": "WILLIAM",
        "middle_name": "WOODWARD",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-03-13",
        "last_updated": "2025-05-07",
        "certification_date": "2025-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "ME",
            "license": "PA2652",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mark J. Neavyn, MD
• Cassandra Nedwell, LMSW-CC
• Marisol M Needle, LCSW
• Lilia Neichtadt, RN
• Ian R Neilson, M.D.
• Richard Hunter Nellson, DDS
• Erin Nelsen, M.A.,CCC-SLP
• Alexandra Nelson, DO
• Ashley Renae Nelson, CRNA
• Isabella Nelson, LCSW, LADC, CCS

• Physician Assistant in Portland, ME
• Providers in Portland, ME by specialty
• Physician Assistant in Maine

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 7, 2025; 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.