Ramen H. Chmait, MD

Professor of Obstetrics & Gynecology (Clinical Scholar)

Director of Fetal Surgery Program

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Overview

Ramen Chmait, MD is Assistant Professor of Clinical Obstetrics and Gynecology, Pediatrics, and Surgery at the University of Southern California’s Keck School of Medicine. Dr. Chmait has served as director of Los Angeles Fetal Therapy since 2006. The Los Angeles Fetal Therapy is a program within the CHLA-USC Institute for Maternal-Fetal Health. In this capacity he has provided surgical treatment to hundreds of unborn children. Dr. Chmait also directs a research program devoted to understanding fetal disease and investigating potential treatment modalities.

Awards

  • U.S. News Top Doctors, 2011
     – 2014
  • Fetal Hope: Light of Hope Award, 2008
  • UCSD Department of Reproductive Medicine: Fellows Teaching Award, 2003
  • Kaiser Permanente Los Angeles Medical Center: Resident Research Award, 2000

Research Funding

  • Pre-Clinical Development of a Fetal Micropacemaker
    NIH · R01HD075135 · Sep 30, 2012 – Aug 31, 2017 · Role: Principal Investigator

Publications

  • Sleep-related breathing disorders beyond infancy following open spina bifida repair. Eur J Pediatr. 2026 Jun 06; 185(7).. View in PubMed
  • In utero ventriculosubgaleal shunt placement in a fetal lamb model: Phase 1 technical insights. Pregnancy (Hoboken). 2026 Jul; 2(4):e70328.. View in PubMed
  • Does the order of ablation of vein-to-vein placental connections during fetoscopic laser photocoagulation affect outcomes in twin-twin transfusion syndrome? Am J Obstet Gynecol. 2026 May 23. Chmait RH . View in PubMed
  • Mathematical reappraisal of the congenital cystic adenomatoid malformation volume ratio. J Matern Fetal Neonatal Med. 2026 Dec; 39(1):2654343.. View in PubMed
  • Intrauterine hematoma evacuation during fetoscopic myelomeningocele repair: a novel application of the NICO Myriad. Neurosurg Focus Video. 2026 Apr; 14(2):V10.. View in PubMed
  • Fetoscopic laser ablation vs standard management for Type-II and Type-III vasa previa. Ultrasound Obstet Gynecol. 2026 Mar; 67(3):320-328.. View in PubMed
  • Maternal outcomes following prenatal spina bifida repair: A systematic review and meta-analysis. Pregnancy (Hoboken). 2026 Jan; 2(1):e70230.. View in PubMed
  • Placental chorangiomas: Diagnostic challenges and contemporary approaches to fetal care. Pregnancy (Hoboken). 2026 Jan; 2(1):e70181.. View in PubMed
  • The role of superficial anastomoses on fetal survival after laser treatment for twin-twin transfusion syndrome: a subanalysis of the sequential trial. Am J Obstet Gynecol. 2026 Apr; 234(4):1214-1231.. View in PubMed
  • Selective fetal growth restriction type II: IIb or not IIb. Am J Obstet Gynecol MFM. 2026 Jan; 8(1):101833.. View in PubMed