David Sommer, MD

Primary specialty

Neurology PhysicianTaxonomy code 2084N0400X

License

238797 Issued in MA

Practice address

33 Lyman St Ste 400
Westborough, MA 01581-1434

Phone

(508) 898-0055

Fax

(508) 898-0035

NPI assigned

Mar 3, 2008

Last updated

Dec 17, 2025By the provider in NPPES

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 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

Neurology

Education

Duke University School of Medicine, 2004

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Reliant Medical Group IncGroup PAC ID 5597755322, 638 clinicians

Community Neuroscience Services LLCGroup PAC ID 1658688031, 23 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Vincent Hospital Hospital, Worcester, MA, CCN 220176

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: david.sommer.npi1144490533.reliant@direct.optumcare.masshiway.net
• FHIR API: https://fhir4.healow.com/fhir/r4/IJCCDA

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

• Community Neuroscience Services, LLC

  • Neurology Physician
  • Westborough, MA
  • NPI 1578940219
  Medicare reassignment Care Compare group NPD
• Reliant Medical Group, Inc

  • Family Medicine Physician
  • Worcester, MA
  • NPI 1720017528
  Medicare reassignment Care Compare group NPD
• Tak Medical Group, P.C.

  • Psychiatry Physician
  • Leominster, MA
  • NPI 1104270784
  NPD (past)

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

• VHS Acquisition Subsidiary Number 7 Inc

  dba Saint Vincent Hospital

  • General Acute Care Hospital
  • Worcester, MA
  • NPI 1538131214
  Care Compare affiliation

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

{
    "created_epoch": "1204502400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765929600000",
    "number": "1144490533",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "33 LYMAN ST STE 400",
            "city": "WESTBOROUGH",
            "state": "MA",
            "postal_code": "015811434"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "33 LYMAN ST STE 400",
            "city": "WESTBOROUGH",
            "state": "MA",
            "postal_code": "015811434",
            "telephone_number": "508-898-0055",
            "fax_number": "508-898-0035"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SOMMER",
        "first_name": "DAVID",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-03-03",
        "last_updated": "2025-12-17",
        "certification_date": "2025-12-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "MA",
            "license": "238797",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Somnovision
• Heather Anne Sousa
• South County Physical Therapy, Inc
• Specialistvirtucare
• Spectrum Health Systems

• Neurology Physician in Westborough, MA
• Providers in Westborough, MA by specialty
• Neurology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 17, 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.
• 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.