About Frances Hayes, MBBCH, BAO

Frances Hayes, M.D., is an Associate Professor of Medicine at Harvard Medical School, Interim Chief of Endocrinology at Massachusetts General Hospital and a Fellow of the Royal College of Physicians of Ireland. Her prior research focused on male hypogonadism, a topic on which she has lectured and published widely including being a co-author on the Endocrine Society Clinical Practice Guidelines on testosterone therapy. Her clinical practice includes men and women with the full spectrum of reproductive disorders including PCOS and menopause. She is the Endocrine Director of multi-disciplinary clinics dedicated to the care of patients with Turner syndrome, Klinefelter syndrome and Gender Dysphoria.

Departments, Centers, & Programs:

Clinical Interests:

Treats:

Locations

Mass General Endocrinology: Reproductive Endocrine Unit
55 Fruit St.
Boston, MA 02114
Phone: 617-726-8433

Mass General Transgender Health Program
50 Staniford Street
Suite 801
Boston, MA 02114
Phone: 617-643-7210

Mass General Endocrinology: Endocrine Associates
55 Fruit St.
Suite 730S
Boston, MA 02114
Phone: 617-726-8720

Medical Education

  • MB, BCh, BAO,University College Dublin School of Medicine
  • Residency, St. James Hospital
  • Fellowship, St. Vincent's University Hospital

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

4.9out of 5(152 Ratings, 64 Comments)

June 2025

i like dr hayes


June 2025

Dr. Hayes is a very, very knowledgeable, competent physician in her field of specialty. She has always been very, very compassionate with me, an excellent listener, gives me great feedback and suggestions, and I would not go to another endocrinologist but her. Please do not let her retire. Thank you.


June 2025

Dr. Hayes is very informative


June 2025

Dr. Hayes was primarily absent from my meeting-- I spent more time in discussion with her fellow, a doctor whose name I don't recall.


June 2025

Dr. Hayes is an exceptional doctor. Her knowledge and care were truly outstanding. She spent a great deal of time speaking with us and clarifying care options. I strongly recommend seeing her...if you can get an appointment!


June 2025

Frances Hayes is an excellent health care provider


May 2025

Dr Hayes was very accommodating to scheduling an appointment sooner than later. She listened carefully to my concerns before ordering any lab tests or prescribing any medications. She was thoughtful, explained to me my options in detail and after careful consideration we came up with a treatment plan together. Excellent visit overall.


May 2025

Dr. Hayes was knowledgeable, helpful and answered my questions.


May 2025

Dr. Hayes gave me a piece of information which was new to me, and I was very pleased with that.


May 2025

Dr. Hayes is very compassionate and very intelligent. She's a wonderful doctor.

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