Howard N Fixler, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

53904 Issued in MA

Practice address

189 May St
Worcester, MA 01602-4339

Phone

(508) 791-6351

NPI assigned

Nov 25, 2005

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 MA

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

Internal Medicine

Education

University of Massachusetts Medical School, 1983

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Total Wellness Centers LLCGroup PAC ID 2860536919, 39 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Total Wellness Centers, LLC

  • Addiction Medicine (Internal Medicine) Physician
  • West Springfield, MA
  • NPI 1770816506
  Medicare reassignment Care Compare group NPD
• New England Hospitalists PC

  • Internal Medicine Physician
  • Worcester, MA
  • NPI 1487803052
  Medicare reassignment NPD
• Total Wellness Centers, LLC

  • Clinical Medical Laboratory
  • Holyoke, MA
  • NPI 1770020018
  NPD
• Umass Memorial Medical Group Inc

  • Internal Medicine Physician
  • Worcester, MA
  • NPI 1760445373
  NPD (past)

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

{
    "created_epoch": "1132876800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1437132297",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 62",
            "address_2": "TURNPIKE STATION",
            "city": "SHREWSBURY",
            "state": "MA",
            "postal_code": "015450062",
            "telephone_number": "508-334-8815",
            "fax_number": "508-334-5374"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "189 MAY ST",
            "city": "WORCESTER",
            "state": "MA",
            "postal_code": "016024339",
            "telephone_number": "508-791-6351"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FIXLER",
        "first_name": "HOWARD",
        "middle_name": "N",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "53904",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3099423",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Paul J. Fitzpatrick, C.R.N.A.
• Timothy Fitzpatrick, C.R.N.A.
• Danielle Fitzsimmons-Pattison, MD
• Kaitlyn Fitzsimmons
• Kristen Fitzsimmons, MS, RD, LDN, CDCES
• Sarah Fixon-Owoo
• Robert Fladger
• Courtney Joyce Flagg
• Morgana Flaherty-Steeves, MA
• Jenny Flaherty, PH.D., LMHC

• Internal Medicine Physician in Worcester, MA
• Providers in Worcester, MA by specialty
• Internal Medicine Physician 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.
• 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.