William Gregory Feero, MD, PHD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

MD15570 Issued in ME

Practice address

1 Harnois Ave Ste 1B
Westbrook, ME 04092-4395

Phone

(207) 662-1340

Fax

(207) 662-1341

NPI assigned

Feb 28, 2006

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

Other identifiers 1

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Family Practice

Education

University of Pittsburgh School of Medicine, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mainegeneral Medical CenterGroup PAC ID 1254245715, 554 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Maine General Medical Center Hospital, Augusta, ME, CCN 200039
• Redington Fairview General Hospital Hospital, Skowhegan, ME, CCN 201314

Merit-based Incentive Payment System (MIPS)

Final score

86.22 of 100Reported as group

Quality

75.39

Promoting interoperability

84

Improvement activities

40

Cost

75.32

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: williamfeero@mgh.allscriptsdirect.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.

• Mainegeneral Medical Center

  • General Acute Care Hospital
  • Augusta, ME
  • NPI 1669423380
  Medicare reassignment Care Compare group NPD
• Mainegeneral Medical Center

  • Community/Retail Pharmacy
  • Waterville, ME
  • NPI 1477344976
  NPD
• Mainehealth

  • Community/Retail Pharmacy
  • Portland, ME
  • NPI 1013868181
  NPD (past)
• Frederick Health Hospital Inc

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Redington-Fairview General Hospital

  • Critical Access Hospital
  • Skowhegan, ME
  • NPI 1174549133
  Care Compare affiliation

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

{
    "created_epoch": "1141084800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778112000000",
    "number": "1285600239",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 HARNOIS AVE STE 1B",
            "city": "WESTBROOK",
            "state": "ME",
            "postal_code": "040924395",
            "telephone_number": "207-662-1340",
            "fax_number": "207-662-1341"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 HARNOIS AVE STE 1B",
            "city": "WESTBROOK",
            "state": "ME",
            "postal_code": "040924395",
            "telephone_number": "207-662-1340",
            "fax_number": "207-662-1341"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4 Sheridan Rd",
            "address_purpose": "LOCATION",
            "city": "Fairfield",
            "state": "ME",
            "postal_code": "049373314",
            "country_code": "US",
            "telephone_number": "207-861-5000",
            "fax_number": "207-861-5001",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FEERO",
        "first_name": "WILLIAM",
        "middle_name": "GREGORY",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-28",
        "last_updated": "2026-05-07",
        "certification_date": "2026-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "ME",
            "license": "MD15570",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "313560099",
            "state": "ME"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Shannon Janice Ezovski, MD
• Jaime B Fairfield, PA-C
• Family Home Care LLC
• Leslie Farrin, RDH, MFT
• Melody Peck Faux, FNP
• Fidelity Adult Care LLC
• Fidelity Adult Care LLC
• Firstchoice Care
• Kelsey A Fischer, PA-C
• Scott Matthew Fitzgerald, LCSW

• Family Medicine Physician in Westbrook, ME
• Providers in Westbrook, ME by specialty
• Family Medicine Physician in Maine

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 7, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.