Rachael T. Overcash

Rachael T. OvercashRachael T. Overcash, MD, MPH, is an attending physician specializing in Maternal and Fetal Medicine, Department of Obstetrics and Gynecology, MedStar Washington Hospital Center.

Dr. Overcash is a fellow of the American Congress of Obstetricians and Gynecologists. In addition, she is an active member of the Society for Maternal-Fetal Medicine and a board member of the Pregnancy Foundation. Her teaching experience includes serving as a clinical instructor in reproductive medicine at the University of California, San Diego. Her research has been published in peer-reviewed journals, including Obstetrics and Gynecology, Pediatrics, Journal of Perinatology, Journal of Pediatric Surgery, Maternal and Child Health, the American Journal of Medical Genetics, and Clinical Obstetrics and Gynecology. She currently serves as a reviewer for Obstetrics and Gynecology. Dr. Overcash is board certified in obstetrics and gynecology.

Her medical degree is from the George Washington University School of Medicine, where she also completed a residency in obstetrics and gynecology. She continued her training with a fellowship in maternal-fetal medicine at the University of California, San Diego. Her master of public health degree in health policy and management is from the Yale University School of Public Health, New Haven, CT.

Research Interests

Dr. Overcash’s research interests include the following:

  • Obesity in pregnancy
  • Maternal complications in pregnancy
  • Fetal anomalies and complications
  • Anticoagulation and pregnancy

Selected Research

Enoxaparin dosing after cesarean delivery in morbidly obese women

In this prospective sequential cohort study, Dr. Overcash and colleagues compared the adequacy of venous thromboembolism prophylaxis based on anti-Xa concentrations of weight-based enoxaparin dosing versus body mass index (BMI)-stratified dosing in morbidly obese women after cesarean delivery. This study was published in Obstetrics and Gynecology (2015;125:1371-6. doi: 10.1097/AOG.0000000000000873).

Early second trimester weight gain in obese women predicts excessive gestational weight gain

In this observational prospective cohort study, Dr. Overcash and colleagues assessed gestational weight gain in obese women to determine whether weight gain at a certain point in pregnancy could identify women at risk for excessive gestational weight gain. This work was published in Maternal and Child Health (2015;19:2412-2418. doi: 10.1007/s10995-015-1760-8).

Maternal and fetal capillary malformation-arteriovenous malformation

In this work, Dr. Overcash and colleagues explored RASA1 mutations and the clinical presentation of a patient with capillary malformation-arteriovenous malformation and a fetus with non-immune hydrops fetalis. The results of this research have been published in the American Journal of Medical Genetics (2015;167A:2440-2443. doi: 10.1002/ajmg.a.37203).

Factors associated with gastroschisis outcomes

In this multi-center retrospective study, Dr. Overcash and colleagues from the University of California Fetal Consortium identified perinatal variables that were associated with adverse outcomes in newborns diagnosed prenatally with gastroschisis. This research was published in Obstetrics and Gynecology (2014;124:551-7. doi: 10.1097/AOG.0000000000000425).

View Dr. Overcash’s publications on PubMed.

Visit Dr. Overcash’s clinical practice page.


  • Research Areas
  • Maternal-Fetal/Women’s Health