MARCUS O. BUTLER MD – NPI #1518070101
Internal Medicine
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.
MARCUS BUTLER is a physician located in BOSTON, MA. NPPES has assigned the NPI number 1518070101 to MARCUS BUTLER on August 16, 2006. It is a Type-1 NPI, indicating this NPI number is associated with an individual. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207RH0003X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Hematology & Oncology
The NPI profile was last updated on Sep 11, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for MARCUS BUTLER below.
NPI Profile for
MARCUS O. BUTLER
(about 20 years ago)
DANA FARBER CANCER INSTITUTE
BOSTON, MA 02115 Phone: (617) 632-2334 Fax: (617) 632-3479
A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.
| Taxonomy Classification / Specialization | State | License |
|---|---|---|
| 207RH0003X - Internal Medicine / Hematology & Oncology (Primary) |
MA | 81212 |
| 207RX0202X - Internal Medicine / Medical Oncology |
MA | 81212 |
The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.