About Molly Siegel, MD

Molly Siegel, MD, (she/her/hers) is an obstetrician gynecologist and maternal-fetal medicine specialist at Massachusetts General Hospital and an instructor at Harvard Medical School. She is the associate director for Obstetrics and Gynecology at Chelsea Health Center and the Associate Director for Obstetrics and Gynecology at the MGH Center for Immigrant Health.

Dr. Siegel graduated from Harvard College where she studied history of science with a minor in Spanish language. She received her medical degree from Harvard Medical School. She completed her residency in obstetrics and gynecology at the University of California San Francisco and returned to Boston to complete her fellowship in maternal-fetal medicine at Mass General. 

Dr. Siegel’s clinical and research interests include reducing barriers to equitable prenatal and postpartum care, community health, substance use disorders in pregnancy, mental health in pregnancy, prenatal diagnosis and ultrasound, and complex maternal and fetal care. 

Outside of the hospital, she enjoys spending time with her family, running, and exploring New England.

Departments, Centers, & Programs:

Clinical Interests:



Mass General Obstetrics & Gynecology at Mass General Waltham
52 Second Ave.
Suite 402
Waltham, MA 02451
Phone: 781-487-3860

Mass General Obstetrics and Gynecology
55 Fruit St.
Yawkey Center for Outpatient Care
Suite 4F
Boston, MA 02114
Phone: 617-724-2229

Chelsea HealthCare Center
151 Everett Ave.
Chelsea, MA 02150
Phone: 617-884-8300

Medical Education

  • MD, Harvard Medical School*
  • Residency, University of California San Francisco
  • Fellowship, Massachusetts General Hospital

American Board Certifications

  • Obstetrics & Gynecology, American Board of Obstetrics and Gynecology

Accepted Insurance Plans

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


  • Selected publications:

    Siegel M, Cohen S, Koenigs K, Woods G, Schwartz L, Sarathy L, Chou J, Terplan M, Wilens T, Ecker J, Bernstein S, Schiff D. Assessing the Clinical Utility of Toxicology Testing in the Peripartum Period (2023). American Journal of Obstetrics and Gynecology MFM. 5(7): 100963.

    Siegel M, James K, Jaffe E, L?Heureux M, Kaimal A, Goldfarb I. Provider Confidence in Counseling Preconception, Pregnant, and Postpartum Patients Regarding COVID-19 Vaccination: A Cross-Sectional Survey Study (2023). Health Science Reports. 6:e1163.

    Siegel M, Mahowald G, Uljon S, James K, Leffert L, Sullivan M, Hernandez S, Gray J, Schiff D, Bernstein S. Fentanyl in the Labor Epidural Impacts the Results of Intrapartum and Postpartum Maternal and Neonatal Toxicology Tests (2022). American Journal of Obstetrics and Gynecology. S0002-9378 (22) 02185-8.

    Siegel M, Lumbreras-Marquz M, James K, McBay B, Gray K, Schantz-Dunn J, Diouf K, Goldfarb I. Perceptions and Attitudes Towards COVID-19 Vaccination Amongst Pregnant and Postpartum Individuals (2022). American Journal of Perinatology. 29(14): 1489-1495.

    Siegel M, Dudley B, Wheeler M, Ustinov A, Li B, Rosenstein M. The Use of an Automated Call to Elicit and Characterize Postpartum Concerns after Hospital Discharge: A Prospective Cohort Study (2019). American Journal of Obstetrics and Gynecology-Maternal Fetal Medicine. 1(2): 128-135.

    Siegel M, Wolsky R, Alvarez E.A., Mengesha B. Struma ovarii with atypical features and synchronous primary thyroid cancer: a case report and review of the literature (2019). Archives of Gynecology and Obstetrics. 300 (6): 1693-1707.

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