About Rebecca Karp, MD

Dr. Rebecca Karp is a hematologist at the Massachusetts General Hospital and an Assistant Professor at Harvard Medical School. She treats a broad range of hematologic disorders and has a particular interest in antiphospholipid antibody syndrome, hematologic complications of pregnancy, and porphyria. She is Co-Founder and Co-Director of the multidisciplinary Mass General Porphyria Center, the largest porphyria center in New England. Dr. Karp received her medical degree from the Icahn School of Medicine at Mount Sinai Hospital in New York City and completed her residency in Internal Medicine and fellowship in Hematology/Oncology at Beth Israel Deaconess Medical Center in Boston. Dr. Karp is highly involved in medical education, and spends much of her time teaching medical students, residents, and fellows.

Departments, Centers, & Programs:

Clinical Interests:

Treats:

Locations

Mass General Cancer Center: Hematology Oncology
55 Fruit St.
Boston, MA 02114
Phone: 617-724-4000

Mass General Brigham Healthcare Center
52 Second Ave.
Waltham, MA 02451
Phone: 781-487-6100
Fax: 617-487-6201

Medical Education

  • MD, Mount Sinai School of Medicine
  • Residency, Beth Israel Deaconess Medical Center
  • Fellowship, Beth Israel Deaconess Hospital

American Board Certifications

  • Hematology, American Board of Internal Medicine
  • Internal Medicine, American Board of Internal Medicine
  • Medical Oncology, American Board of Internal Medicine

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.

Reviews: Comments and Ratings

5.0out of 5(142 Ratings, 73 Comments)

February 2025

Very good, very informative and listened intently to what I had to say.


February 2025

Dr. Karp is a caring and extremely competent provider. She is deeply knowledgeable about all aspects of my medical history and developments in the field. I have never had a better doctor and feel extremely fortunate to have her guiding my care.


February 2025

Oh, I love my provider. She's dynamite. I would recommend her to all my family.


February 2025

DR Karp is great


February 2025

Dr Karp started our session exactly on time and thoughtfully anticipated and answered all of my questions. Excellent service for sure. Thank you.


January 2025

I loved talking with Dr. Karp. She listened to everything I had to say and took it into consideration with her follow up question or comment. I truly appreciated her input in my consult. So happy to have seen her.


January 2025

Dr. Karp is genuinely concerned with all aspects of my health. I am so grateful to be in the care of Dr. Karp. She gives much thought to all my concerns. She is never too busy to help me.


January 2025

Dr Karp is one of the best specialists I have as far as I'm concerned. She is always prepared and knows my full medical history. She is thorough, listens patiently and works closely with me to try and figure things out. As a "complicated" patient, she is like a breath of fresh air and I never feel rushed or like she is dismissive. If I ... Read More


January 2025

Dr. Karp was wonderful and explained the blood tests that she was going to have me do that day. She alleviated my concerns about my health concerns


January 2025

Dr.Karp is the best doctor in her field! She goes above and beyond in taking care of my health ! She's so caring and truly an amazing woman and I'm so glad that she's my physician! I would and will recommend her to anyone that needs a physician in her field! She's fantastic!

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