Mary Norton, MD

Chair, Obstetrics, Gynecology and the Reproductive Sciences
Perinatologist and Medical Geneticist

Mary E. Norton is a perinatologist and clinical geneticist at UCSF Medical Center's Prenatal Diagnostic Center. She primarily cares for pregnant women who have a fetus with a birth defect or genetic disorder or are at risk for such a condition. Norton performs obstetrical ultrasounds, counsels women in whom ultrasound detects a problem with the fetus and performs such prenatal tests as amniocentesis and chorionic villus sampling. She also interprets complex genetic tests, especially when abnormalities are found. Her areas of interest in research include applying new genetic tests to prenatal diagnosis and fetal disease, as well as patient decision-making around genetic testing and obstetrical ultrasound. She is also the chair of the obstetrics, gynecology and reproductive sciences at UCSF.

Norton earned her undergraduate degree at the University of Washington in 1982. She completed her internship and residency in Obstetrics and Gynecology at Tuft University in Boston in 1990. She completed a fellowship in Maternal Fetal Medicine and Clinical Genetics at UCSF in 1993. After several years at Brigham and Women's Hospital and Harvard Medical School, she returned to San Francisco where she joined UCSF Medical Center in 1998. She is a professor of obstetrics, gynecology and reproductive sciences at UCSF.


Fetal Treatment Center
1855 Fourth St., Second Floor, Room A-2432
San Francisco, CA 94158
Phone: (800) 793-3887
Fax: (415) 502-0660

Hours: Monday to Friday
8 a.m. - 5 p.m.

Prenatal Diagnostic Center
1825 Fourth St., Third Floor
San Francisco, CA 94158
Phone: (415) 476-4080
Fax: (415) 353-4077

Hours: Monday to Friday
8 a.m. – 5 p.m.

Board Certification

Clinical Genetics, American Board of Medical Genetics

Academic Title

Interim Chair

More about Mary Norton


University of Washington School of Medicine 1986


Tufts-New England Medical Center, OB/GYN 1987


Tufts-New England Medical Center, OB/GYN 1990
UCSF Medical Center, Genetics/Maternal Fetal Medicine 1993

Selected Research and Publications

  1. Jelliffe-Pawlowski LL, Rand L, Bedell B, Baer RJ, Oltman SP, Norton ME, Shaw GM, Stevenson DK, Murray JC, Ryckman KK. Prediction of preterm birth with and without preeclampsia using mid-pregnancy immune and growth-related molecular factors and maternal characteristics. J Perinatol. 2018 May 24.
  2. Fox NS, Monteagudo A, Kuller JA, Craigo S, Norton ME. Society for Maternal-Fetal Medicine (SMFM) Consult Series #45: Mild fetal ventriculomegaly: Diagnosis, evaluation, and management. Am J Obstet Gynecol. 2018 Apr 26.
  3. Shaffer BL, Norton ME. Cell-Free DNA Screening for Aneuploidy and Microdeletion Syndromes. Obstet Gynecol Clin North Am. 2018 Mar; 45(1):13-26.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.