Derek Alexander Mumaw, MD

Primary specialty

Radiation Oncology PhysicianTaxonomy code 2085R0001X

License

1023968 Issued in MA

Practice address

537 Faunce Corner Rd
Dartmouth, MA 02747-1242

Phone

(508) 689-3100

NPI assigned

Jun 11, 2020

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

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

Hematology/OncologyAlso: Radiation Oncology

Education

Hofstra North Shore - Lij School of Medicine, 2020

Medicare assignment

May accept Medicare assignment

Group practices

Lifespan Physician Group of Massachusetts IncGroup PAC ID 3870020399, 458 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Saint Anne'S Hospital Hospital, Fall River, MA, CCN 220020

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dmumaw1248046@epic00.shdirect.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.

• Lifespan Physician Group of Massachusetts Inc

  • Family Medicine Physician
  • Taunton, MA
  • NPI 1235957713
  Medicare reassignment Care Compare group NPD
• Lifespan of Massachusetts - Fall River Inc

  • General Acute Care Hospital
  • Fall River, MA
  • NPI 1972330165
  Medicare reassignment NPD
• Lifespan of Massachusetts - Fall River Inc

  • Psychiatric Hospital Unit
  • Fall River, MA
  • NPI 1013744200
  NPD
• Saint Anne'S Hospital

  • General Acute Care Hospital
  • Fall River, MA
  • NPI 1932298296
  NPD (past)

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

• Lifespan of Massachusetts - Fall River Inc

  • General Acute Care Hospital
  • Fall River, MA
  • NPI 1972330165
  Care Compare affiliation

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

{
    "created_epoch": "1591833600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785110400000",
    "number": "1013532449",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "795 MIDDLE ST",
            "city": "FALL RIVER",
            "state": "MA",
            "postal_code": "027211798",
            "telephone_number": "508-674-5600"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "537 FAUNCE CORNER RD",
            "city": "DARTMOUTH",
            "state": "MA",
            "postal_code": "027471242",
            "telephone_number": "508-689-3100"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "593 Eddy St Bsmt Apc",
            "address_purpose": "LOCATION",
            "city": "Providence",
            "state": "RI",
            "postal_code": "029034923",
            "country_code": "US",
            "telephone_number": "401-444-8311",
            "fax_number": "401-444-8301",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1454 S County Trl Ste 1400",
            "address_purpose": "LOCATION",
            "city": "East Greenwich",
            "state": "RI",
            "postal_code": "028181750",
            "country_code": "US",
            "telephone_number": "844-222-2881",
            "fax_number": "401-444-8301",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "795 Middle St",
            "address_purpose": "LOCATION",
            "city": "Fall River",
            "state": "MA",
            "postal_code": "027211798",
            "country_code": "US",
            "telephone_number": "508-674-5600",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "593 Eddy St",
            "address_purpose": "LOCATION",
            "city": "Providence",
            "state": "RI",
            "postal_code": "029034923",
            "country_code": "US",
            "telephone_number": "401-444-3600",
            "fax_number": "401-444-3124",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MUMAW",
        "first_name": "DEREK",
        "middle_name": "ALEXANDER",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-06-11",
        "last_updated": "2026-07-27",
        "certification_date": "2026-07-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "RI",
            "license": "MD20767",
            "primary": false
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "MA",
            "license": "1023968",
            "primary": true
        },
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "MI",
            "license": "4351046090",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Marta Morrissette, N.P.
• Morton Hospital, a Steward Family Hospital, Inc.
• Michelle A Moynihan
• Leah Brianne Mullen, LICSW
• Holly Muller, PT, DPT
• Sara Lynn Munger, OTR
• MW Wellness Ventures IV LLC
• Timothy Nace, MD
• Allison Kayla Neves, FNP-BC
• John Niedzwicki, M.D.

• Radiation Oncology Physician in Dartmouth, MA
• Providers in Dartmouth, MA by specialty
• Radiation Oncology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 27, 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.