1. Home
  2. Directory
  3. Massachusetts
  4. Boston
  5. Internal Medicine
  6. NPI Profile

MARCUS OTHO BUTLER MD
NPI 1518070101
Internal Medicine - Hematology & Oncology in Boston, MA

Active since August 16, 2006
44 BINNEY STREET, DANA FARBER CANCER INSTITUTE, BOSTON, MA 02115(617) 632-2334(617) 632-3479 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Marcus Otho Butler Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARCUS OTHO BUTLER MD (NPI 1518070101) is an individual hematology & oncology provider in Boston, Massachusetts, licensed in Massachusetts (81212) and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1518070101
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameMARCUS OTHO BUTLERCredential: MD
Location Address44 BINNEY STREET, DANA FARBER CANCER INSTITUTEBoston, MA 02115
Mailing Address44 Binney Street, Dana 540Boston, MA 02115 · (617) 632-4589 · Fax (617) 632-2255
Phone(617) 632-2334
Fax(617) 632-3479
Sole ProprietorNo
Enumeration DateAugust 16, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1518070101 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in MA · 81212
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 81212 (MA)
44 BINNEY STREET, Boston, MA 02115
Open in Google Maps ↗

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KENDRA LYNNE CHURCH MS PA C
Physician Assistant
44 BINNEY STREET, D1 B30
BOSTON, MA 02115
Suffolk County (617) 525-7486
WILLIAM G KAELIN M.D.
Internal Medicine
44 BINNEY STREET, DANA FARBER CANCER INSTITUTE
BOSTON, MA 02115
Suffolk County (617) 632-3975
DAVID JOSEPH KWIATKOWSKI MD
Internal Medicine (Medical Oncology)
44 BINNEY STREET
BOSTON, MA 02115
Suffolk County (617) 632-5320
DANA-FARBER CANCER INSTITUTE, INC.
Durable Medical Equipment & Medical Supplies
44 BINNEY STREET
BOSTON, MA 02115
Suffolk County (617) 632-3000
ARNOLD S FREEDMAN MD
Internal Medicine (Medical Oncology)
44 BINNEY STREET, ROOM D1B30 DFCI DANA FARBER CANCER INSTITUTE
BOSTON, MA 02115
Suffolk County (617) 632-4894
MASSIMO F LODA MD
Pathology (Clinical Pathology/Laboratory Medicine)
44 BINNEY STREET, DANA FARBER CANCER INSTITUTE DEPT OF PATHOLOGY
BOSTON, MA 02115
Suffolk County (617) 632-4705
ANDREW J WAGNER M.D.
Internal Medicine (Hematology & Oncology)
44 BINNEY STREET, DANA FARBER CANCER INST.
BOSTON, MA 02115
Suffolk County (617) 632-4899
MS. JENNIFER NICOLE STARR P.A.
Physician Assistant (Medical)
44 BINNEY STREET, DANA FARBER CANCER INSTITUTE
BOSTON, MA 02115
Suffolk County (617) 823-6285

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marcus Butler's NPI number?

The NPI number for Marcus Butler is 1518070101. It was assigned to this individual provider in the NPPES registry on August 16, 2006.

Where is Marcus Butler located?

Marcus Butler practices at 44 Binney Street Dana Farber Cancer Institute, Boston, MA 02115. The listed phone number is (617) 632-2334.

What is Marcus Butler's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

When was this NPI record last updated?

The NPPES record for Marcus Butler was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.