NPIMap

Individual provider Active NPI

Michael Ryan Cassidy, M.D.

  • Surgical Oncology Physician
  • Boston, MA
National Provider Identifier
1114186905
Registry record updated Feb 17, 2017
On this page

Key facts

NPPES NPI Registry
Primary specialty
Surgical Oncology PhysicianTaxonomy code 2086X0206X
License
243921 Issued in MA
Practice address
88 E Newton St
C515
Boston, MA 02118-2308
Phone
(617) 638-8442
NPI assigned
Jun 5, 2008
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 17, 2017

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Surgical Oncology Physician 2086X0206X 243921 MA Primary
Surgery Physician 208600000X 243921 MA

Addresses

Primary practice location

88 E Newton St
C515
Boston, MA 02118-2308

Mailing address

88 E Newton St
C515
Boston, MA 02118-2308

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
I20170616001898 MA Practitioner - Surgical OncologyPractitioner - General Surgery 1355573361 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Surgical OncologyAlso: General Surgery
Education
Boston University School of Medicine, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Dana-Farber Cancer Institute, Inc.Group PAC ID 9133038904, shared by 5 NPIs, 671 clinicians

Practice addresses (Care Compare)

330 Brookline Ave
Boston, MA 02215-5400
Phone (617) 754-8612

450 Brookline Ave
Boston, MA 02215-5418

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Mastectomy20
Melanoma (skin cancer) excision1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
243921MAMDSurgical Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Boston Medical Center Corporation Current Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Nov 1, 2025 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Nov 1, 2025 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Feb 1, 2026 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Feb 1, 2026 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Nov 1, 2025 Accepting new patients

Locations

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

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

Interoperability endpoints

  • Direct secure messaging: mcassidy5851@direct.bmc.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 11

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": "1212624000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1487289600000",
    "number": "1114186905",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "88 E NEWTON ST",
            "address_2": "C515",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021182308"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "88 E NEWTON ST",
            "address_2": "C515",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021182308",
            "telephone_number": "617-638-8442"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CASSIDY",
        "first_name": "MICHAEL",
        "middle_name": "RYAN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-06-05",
        "last_updated": "2017-02-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086X0206X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Oncology",
            "state": "MA",
            "license": "243921",
            "primary": true
        },
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MA",
            "license": "243921",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.