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About Dr. Mary Callahan

I am Mary B. Callahan, DO FACC and welcome to my cardiovascular practice. I wanted to create a place to provide high quality care in a comfortable and relaxed outpatient setting. I am not employed by any hospital or healthcare organization, so I can focus solely on your care.

As a native New Englander, I grew up near Boston and spent summers on Cape Cod. I graduated from the University of New Hampshire with a Bachelor’s degree in Biochemistry and a Master of Science degree in Animal and Nutritional Sciences. After graduation I worked in physiologic research at Brigham and Women’s Hospital, in Boston, studying vascular disease and hypertension. During that time, I became interested in medicine so I applied to and was accepted at the University of New England College of Osteopathic Medicine in Biddeford, Maine. With my studies completed, I continued my New England travels with a Residency in Internal Medicine at Brown University in Providence, Rhode Island. During that time that I was encouraged to apply for a fellowship in cardiology to advance my training.

For my Fellowship in Cardiovascular Diseases I went to Albany Medical Center in Albany, New York. When my studies were finally completed, I returned to Massachusetts and have been affiliated with several hospitals – Boston Medical Center, Quincy Medical Center, Jordan Hospital and Cape Cod Hospital.

Currently, I reside in Plymouth with my husband, Michael, our son Daniel and our newly adopted puppy, Skipper. We have two grown daughters, Andrea in Omaha, Nebraska, and Jessica in Boston. When I am not working I enjoy spending time with my family, cooking, being outdoors, walking in the woods, sailing, bicycling and beaching. I feel fortunate to live in this beautiful area and try to enjoy it as much as possible. I look forward to seeing my returning patients and meeting new patients in my new practice.