NPIMap

Individual provider Active NPI

Daniel Fein, M.D.

  • Medical Oncology Physician
  • Milford, MA
National Provider Identifier
1053791707
Registry record updated May 20, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Oncology PhysicianTaxonomy code 207RX0202X
License
286890 Issued in MA
Practice address
20 Prospect St
Milford, MA 01757-3042
Phone
(508) 488-3700
Fax
(508) 488-2016
NPI assigned
Jun 8, 2015
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 20, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Oncology Physician 207RX0202X 286890 MA Primary
Hematology (Internal Medicine) Physician 207RH0000X 286890 MA

Addresses

Primary practice location

20 Prospect St
Milford, MA 01757-3042

Mailing address

20 Prospect St
Milford, MA 01757-3042
Phone (508) 488-3700

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20210524002413 MA Practitioner - Hematology/OncologyPractitioner - Internal Medicine 8628367356 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Internal Medicine
Education
State University of New York Downstate Medical Center, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Dana-Farber Cancer Institute, Inc.Group PAC ID 9133038904, shared by 5 NPIs, 671 clinicians

Practice addresses (Care Compare)

20 Prospect St
Suite 2
Milford, MA 01757-3042
Phone (508) 473-1190

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
286890MAMDHematology (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Jul 1, 2022 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Internal Medicine CurrentSince Jul 1, 2022 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Feb 1, 2025 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Feb 1, 2025 Accepting new patients
Dana-Farber Cancer Institute, Inc. Medical Oncology CurrentSince Feb 1, 2025 Accepting new patients
Dana-Farber Cancer Institute, Inc. Past Accepting new patients

Locations

450 Brookline Ave
Boston, MA 02215
Phone (508) 478-2061

330 Brookline Ave
Boston, MA 02215
Phone (617) 667-2000

20 Prospect St
Milford, MA 01757
Phone (508) 478-2061

20 Prospect St
Ste 2
Milford, MA 01757

Interoperability endpoints

  • Direct secure messaging: dfein119413@direct.bilh.masshiway.net
  • Direct secure messaging: dfein29128@tuftsmedicine.direct-ci.com
  • Direct secure messaging: fein.daniel.dfci@direct.partners.masshiway.net

Organizations & group practices 6

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.

Hospital & facility affiliations 4

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

NPI Registry JSON

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

{
    "created_epoch": "1433721600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779235200000",
    "number": "1053791707",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20 PROSPECT ST",
            "city": "MILFORD",
            "state": "MA",
            "postal_code": "017573042",
            "telephone_number": "508-488-3700",
            "fax_number": "508-488-2016"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 PROSPECT ST",
            "city": "MILFORD",
            "state": "MA",
            "postal_code": "017573042",
            "telephone_number": "508-488-3700",
            "fax_number": "508-488-2016"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FEIN",
        "first_name": "DANIEL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2015-06-08",
        "last_updated": "2026-05-20",
        "certification_date": "2026-05-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "MA",
            "license": "286890",
            "primary": true
        },
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "MA",
            "license": "286890",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Milford, MA

Sources for this page

Verify at the official NPI Registry.