Marcus Otho Butler, MD

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

81212 Issued in MA

Practice address

44 Binney Street
Dana Farber Cancer Institute
Boston, MA 02115

Phone

(617) 632-2334

Fax

(617) 632-3479

NPI assigned

Aug 16, 2006

Sex

Male

Sole proprietor

No

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1155686400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1518070101",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "44 BINNEY STREET",
            "address_2": "DANA 540",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "617-632-4589",
            "fax_number": "617-632-2255"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "44 BINNEY STREET",
            "address_2": "DANA FARBER CANCER INSTITUTE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "617-632-2334",
            "fax_number": "617-632-3479"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BUTLER",
        "first_name": "MARCUS",
        "middle_name": "OTHO",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-16",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "MA",
            "license": "81212",
            "primary": true
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "MA",
            "license": "81212",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kathryn L. Butler, MD
• Kyle Butler, OTC
• Lara Alexis Butler
• Lauren Butler, OD
• Lauren Marie Butler, L.I.C.S.W.
• Martha Anne Butler, RN, APRN, BC
• Michael Craig Butler, NP
• Paul Monroe Butler, M.D.
• Samantha C Butler, PHD
• Schaillee Butler, PA

• Hematology & Oncology Physician in Boston, MA
• Providers in Boston, MA by specialty
• Hematology & Oncology Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.