Dr. Troy M. Reyna, Pediatric General and Thoracic Surgery

Dr. Troy M. Reyna, Pediatric General and Thoracic Surgery

  • Troy M Reyna MD
  • Appointments:
  • Specialty: Pediatric Surgery
  • Board Certified: Surgery, Pediatric Surgery
  • Additional Languages: Spanish

An accomplished pediatric surgeon, Dr. Troy Reyna was one of the first physicians to introduce minimally invasive surgery for children.  The first laparoscopic cholecystectomy (gallbladder removal) and first laparoscopic Nissen fundoplication were both performed by Dr. Reyna.  He is also one of a only a few surgeons in the region that perform minimally invasive pectus excavatum surgery, also known as the Nuss procedure. An advocate for innovation, Dr. Reyna embraces the latest advancements in surgical techniques and technology. Dr. Reyna’s clinical interests include hyperhidrosis (palmar), Hirschsprung’s disease, pectus excavatum, pectus carinatum, hernias, tumors and childhood cancers.

Dr. Reyna is a graduate of the United States Military Academy at West Point, New York where he majored in chemistry. He received his medical degree from Georgetown University Medical School, Washington, D.C. He completed his surgical internship at Walter Reed Army Medical Center, Washington, D.C. and his surgical residency at Tripler Army Medical Center, Honolulu, Hawaii. Dr. Reyna served his Pediatric Surgery fellowship at Columbus Children’s Hospital, Columbus, Ohio. Dr. Reyna retired from the U.S. Army as a full colonel after serving as a medical officer during his distinguished military career.  He was stationed in Germany, Central America, and Iraq during Operation Desert Storm.

As a respected expert in the fields of pediatric surgery and extensive experience with trauma cases, Dr. Reyna serves on the faculty as an instructor of Advanced Trauma Life Support with the American College of Surgeons.  He is a fellow with the American Academy of Pediatrics. Dr. Reyna is a certified diplomate of the American Board of Forensic Examiners. Dr. Reyna is board certified in pediatric surgery and general surgery by the American Board of Surgery. Dr. Reyna is fluent in German and Spanish.

Clinical Interests

Hyperhidrosis (palmar), Hirschsprung's disease, pectus excavatum, pectus carinatum, hernias, tumors and childhood cancers

Troy M Reyna MD is on staff at CHOC Hospital in Orange and CHOC Mission Hospital.


CHOC Specialists – Pediatric Surgery
505 S Main St, Suite 225
Orange, CA 92868
phone: 714-364-4050
fax: 714-364-4051

CHOC Specialty Center – Newport Beach
500 Superior Ave, Suite 140
Newport Beach, CA 92663
phone: 714-364-4050
fax: 714-364-4051


  • General Surgery Internship
    Walter Reed Army Medical Center, Bethesda, MD
  • General Surgery Residency
    Tripler Army Medical Center, HI
  • Medical School
    Georgetown University School of Medicine, Washington DC
  • Pediatric Surgery Fellowship
    Nationwide Children’s Hospital, Columbus, OH

Administrative Appointments

  • Chair, Pediatric Surgery, CHOC
  • Pediatric Surgery, CHOC Specialists

Professional Organizations

  • American Academy of Pediatrics
  • American College of Surgeons
  • American Professional Society on the Abuse of Children
  • Association for Academic Surgery
  • Association of Military Surgeons of the United States
  • International Pediatric Endosurgery Group
  • Pacific Association of Pediatric Surgeons
  • Society of American Gastrointestinal Endoscopic Surgeons
  • Southwest Surgical Congress


Dr. Troy Reyna - Hirschsprung’s Disease
When a Child Has Hirschsprung’s Disease

Dr. Troy Reyna explains the signs and symptoms of Hirschsprung's disease and the surgical treatment that can be used to fix it.

Hyperhidrosis - Dr. Troy Reyna
When a Child or Teen Has Hyperhidrosis

Children and teens with hyperhidrosis have excessive sweating regardless of the environmental temperature and emotional factors.

Dr. Troy Renya - Lumps and Bumps in Children
Lumps and Bumps in Children: Dr. Reyna

Dr. Troy Renya explains if a baby is born with a lump or bump, when is it serious and discusses diagnosis and what treatment may be recommended.

Dr. Troy Renya - Hernias and Children
Hernias and Children: Dr. Reyna

Dr. Troy Renya, CHOC, explains what a hernia is and how hernias in children are different from adult hernias.

Dr Troy Reyna - the causes of Appendicitis
Appendix & Appendicitis: Dr. Reyna

Meet Dr Troy Reyna, pediatric surgeon at CHOC, as he talks about what the appendix is and what the causes of appendicitis are.

Health Topics

Toddler in diapers with his finger on his belly button
Identifying Hernias

“Parents will typically notice a bulge in the groin or abdominal wall, where there shouldn’t be one,” says CHOC pediatric surgeon Dr. Reyna. The areas around the groin and belly button are the two most common regions for hernias in babies and young children.

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