Fetal Surgery

Our mission is simple: build a healthier community. It’s what we’ve been doing for over 130 years, and today we’re doing it in more ways than ever before.

Fetal Surgery

Huntington Baby and the USC Institute for Maternal-Fetal Health (IMFH) offer a Fetal Surgery Program to identify and treat medical problems in children while they are still in the womb.

COVID-19 Update

In addition to enhanced safety protocols including pre-surgical screenings, and enhanced cleaning and sterilization processes, we are carefully and thoughtfully following guidelines from the American College of Surgeons.

Contact your surgeon’s office for more information. 

Recently, Huntington Hospital neonatal surgeon Ramen Chmait, M.D. performed groundbreaking fetal surgery to help repair a baby’s spinal cord while still in the womb.

Read more about this groundbreaking achievement at Huntington Hospital in our press release.

What is Fetal Surgery?

This technique, called “operative fetoscopy,” is performed under local anesthesia via an incision. We are one of very few hospitals in the country to treat the fetus as a patient.

Examples of the types of procedures we perform:

  • Twin-twin transfusion syndrome
  • Monochorionic twins with selective intrauterine growth restriction
  • A cardiac/TRAP sequence and other discordant anomalous twins
  • Lower urinary tract obstruction (posterior urethral valves)
  • Congenital diaphragmatic hernia
  • Fetal and placental tumors, fetal cardiac abnormalities, and amniotic bands, etc.

Conditions we treat:

Huntington Hospital Medical Staff – IMFH & Fetal Surgery

  • Ramen Chmait, M.D., assistant professor of clinical obstetrics and gynecology, University of Southern California’s Keck School of Medicine
  • David A. Miller, M.D., professor, obstetrics, gynecology and pediatrics, University of Southern California Keck School of Medicine, and division chief of maternal fetal medicine, Children’s Hospital Los Angeles
  • Joseph Ouzounian, M.D., director, of maternal-fetal medicine fellowship training program
  • Jamie W. Powers, M.D., neonatologist, corporate medical director for neonatology at Huntington Memorial Hospital

Patient Stories


Twenty-three weeks into Maria Meza’s pregnancy, twins Addison and Addilyn Marquez were diagnosed with a serious condition called twin-to-twin transfusion syndrome. In this rare condition, blood vessels that connect identical twins grow unevenly in the womb, causing one fetus to receive too much blood, and one to get too little. It can be deadly for […]

View all patient stories here.

Contact Information

Los Angeles Fetal Surgery
39 Congress Street, Suite 302
Pasadena, CA 91105
Phone: 626-356-3360
Fax: 626-356-3379
Website: http://www.lafetaltherapy.org/index.html