Co-Director, Colorectal and Pelvic Anomalies Program
Attending Physician

Associate Professor of Clinical Surgery, Keck School of Medicine of USC
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Clinical Interests

Neonatal Surgery Necrotizing Enterocolitis Intestinal Dysmotility Inflammatory Bowel Disease
Colorectal and Inflammatory Bowel Disease


Medical School: 

Wayne State University School of Medicine


Wayne State University, General Surgery 


Wayne State University, General Surgery


Children's Hospital of Michigan, Pediatric Surgery



American Board of Surgery; General and Pediatric Surgery

Professional Memberships: 

American College of Surgeons (ACS)
American Academy of Pediatrics (AAP)
American Medical Association (AMA)
American Pediatric Surgical Association (APSA)
American Physiology Group (APS)
Association for Academic Surgery (AAS)
International Pediatric Endosurgery Group (IPEG)
Society of University Surgeons (SUS)
Surgical Infection Society (SIS)

Research Interests: 
  • Intestinal physiology and pathophysiology
  • Necrotizing enterocolitis
  • Inflammatory bowel disease

Dr. Gayer is a pediatric surgeon.  His research focuses on necrotizing enterocolitis (NEC), a disease that causes intestinal necrosis in premature infants.  He studies the microbiome, which is the bacterial population of the intestine, to identify specific bile acid metabolites that cause changes in the bacterial profile of infants. Greater understanding of these mechanisms may lead to new therapeutic options for babies with NEC.

4650 Sunset Blvd.
Pediatric Surgery, MS 100
Los Angeles, CA 90027
Phone: 323-361-4974Office
Fax: 323-361-3534Fax