Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Rebecca Sara Karp, MD

Individual provider Hematology & Oncology Physician · NPI 1265669659

Dr. Rebecca Sara Karp, MD is a Hematology/Oncology in Boston, Massachusetts. Graduated from Icahn School of Medicine at Mount Sinai in 2009, 17 years ago. Practices with The General Hospital Corporation, a 1,276-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
17
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
MA
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

330 Brookline Ave
Boston, MA 02215-5400
Phone: (617) 667-2100
Fax: (617) 975-5665
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 55 Fruit St, Boston, MA 02114-2621 — (617) 726-2000
  • 75 Francis St, Boston, MA 02115-6110 — (617) 732-5500

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 251249 (MA)

Record details

NPI number1265669659
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 12, 2009
Last updated in NPPESFebruary 11, 2026
Certification dateFebruary 11, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2009 (17 years in practice)
Group practice The General Hospital Corporation — 1276 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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