Benjamin R Massey, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

1023359 Issued in MA

Practice address

Beth Israel Deaconess Medical Center
330 Brookline Ave West Span 201
Boston, MA 02215

Phone

(617) 754-4677

Fax

(617) 632-0215

NPI assigned

May 9, 2022

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

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

Hospitalist

Education

University of Colorado School of Medicine, Aurora, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Associated Physicians of Harvard Medical Faculty Physicians at Beth IsGroup PAC ID 6305749987, shared by 7 NPIs, 566 clinicians

Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr IncGroup PAC ID 4486567104, 1,693 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Beth Israel Deaconess Medical Center Hospital, Boston, MA, CCN 220086
• Beth Israel Deaconess Hospital - Milton Hospital, Milton, MA, CCN 220108

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: bmassey560670@direct.bilh.masshiway.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.

• Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1194765438

  Single Specialty

  Medicare reassignment Care Compare group NPD
• Associated Physicians of Harvard Medical Faculty Physicians at Beth Is

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1497151773

  Single Specialty

  Medicare reassignment NPD
• Associated Physicians of Harvard Medical Faculty Physicians at Beth Is

  • Emergency Medical Services (Emergency Medicine) Physician
  • Boston, MA
  • NPI 1952358533

  Single Specialty

  Medicare reassignment NPD
• Associated Physicians of Harvard Medical Faculty Physicians at Beth Is

  • Multi-Specialty Clinic/Center
  • Boston, MA
  • NPI 1861216038

  Single Specialty

  NPD
• Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc

  • Emergency Medicine Physician
  • Boston, MA
  • NPI 1316987993

  Single Specialty

  NPD
• Beth Israel Deaconess Medical Center, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1548202641

  Single Specialty

  NPD (past)

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

• Beth Israel Deaconess Hospital Milton Inc

  • General Acute Care Hospital
  • Milton, MA
  • NPI 1174618953
  Care Compare affiliation
• Beth Israel Deaconess Medical Center, Inc.

  • General Acute Care Hospital
  • Boston, MA
  • NPI 1548202641
  Care Compare affiliation

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

{
    "created_epoch": "1652054400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750464000000",
    "number": "1053057422",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "BETH ISRAEL DEACONESS MEDICAL CENTER",
            "address_2": "330 BROOKLINE AVE WEST SPAN 201",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02215",
            "telephone_number": "617-754-4677",
            "fax_number": "617-632-0215"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "BETH ISRAEL DEACONESS MEDICAL CENTER",
            "address_2": "330 BROOKLINE AVE WEST SPAN 201",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02215",
            "telephone_number": "617-754-4677",
            "fax_number": "617-632-0215"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASSEY",
        "first_name": "BENJAMIN",
        "middle_name": "R",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2022-05-09",
        "last_updated": "2025-06-21",
        "certification_date": "2025-06-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine",
            "state": "AZ",
            "license": "R79474",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MA",
            "license": "1023359",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alison Massed, NP-C
• Ann Marie Massed, CNM
• Susan Eva Massenzio, PH.D.
• Barbara A Masser, M.D.
• Marcia Helene Massey-Key, LICSW
• Parris Massey
• Paul R Massey, MD
• Carolyn M Massiah-Bonilla, NP
• Kadeem Massiah
• Peter J. Massicott, MD

• Hospitalist Physician in Boston, MA
• Providers in Boston, MA by specialty
• Hospitalist Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 21, 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.