Attention Laurel Patients:  The new Laurel office is open. The address is 7140 Contee Road, Suite 3500, Laurel, MD 20707….Attention Lanham/Largo Patients: Our new Largo office is now open and our Lanham location is closed permanently. Largo’s address is 9333 Healthcare Way Suite 4100 Largo, MD 20774.

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Carol Tweed, M.D.

Breast Cancer, Medical Oncology, Hematology, Gynecologic Oncology
Board Certification
  • Hematology and Medical Oncology


Interpreters available for other languages upon request.
Primary Location


810 Bestgate Rd
Suite 400
Annapolis, MD 21401


Dr. Carol Tweed attended Duke University, where she was inducted into Phi Beta Kappa. She graduated summa cum laude with a degree in Biology, and a concentration in molecular biology. She received her medical degree from Washington University in St. Louis, where she was elected to Alpha Omega Alpha. She then completed her Internal Medicine Residency and Hematology/Oncology Fellowship at the University of Pennsylvania.

From 2006-2012, Dr. Tweed was an Assistant Professor on faculty at the University of Pennsylvania’s Abramson Cancer Center. During this time, she practiced as a breast oncology specialist and enthusiastically educated medical students, residents, and fellows.

In 2012, she moved to Annapolis, MD, practicing medical oncology and hematology, and joined Maryland Oncology Hematology in October 2020. Dr. Tweed passionately cares for patients with a broad range of hematologic and oncologic disorders. Her work as a breast medical oncology expert continues. She serves as a member of the Editorial Board of the (National Cancer Institute) NCI PDQ. She is a regional speaker on the topics of breast cancer and cancer genomics. She received her certification in genetic cancer risk assessment through the City of Hope via completion of the Intensive Course in Genomic Cancer Risk Assessment in 2022.   Also, Dr. Tweed is a co-founder and co-director of the Maryland Breast Cancer Consortium.

Dr. Tweed is an active clinical researcher; she has served as principal investigator on numerous clinical trials. She also is an Instructor of Medicine/preceptor for Johns Hopkins School of Medicine, educating medical students. 

Education & Experience

  • Duke University
Medical School
  • Washington University in St. Louis
  • University of Pennsylvania
  • University of Pennsylvania
  • University of Pennsylvania
  • Member of the City of Hope Clinical Cancer Genomics Community of Practice

Practicing Locations


810 Bestgate Rd
Suite 400
Annapolis, MD 21401


509 Idlewild Avenue
Suite 1
Easton, MD 21601