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

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 Hirschsprung disease, pectus excavatum, pectus carinatum, 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 of the surgical section, the section on critical care, and the section on child abuse and neglect 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.


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

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

Administrative Appointments

  • Chair, Pediatric Surgery, CHOC Children’s
  • Pediatric Surgery, CHOC Children’s Specialists


  • 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

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

Our pediatric general and thoracic surgeons commonly perform the following surgeries: 

  • Thoracic surgery (chest and lungs)
  • Central venous access
  • Circumcision
  • Gallstones (cholecystectomy)
  • GERD (fundoplications)
  • Hydrocele
  • Inguinal hernia
  • Intussusception
  • Lumps & bumps
  • Malrotation
  • Major abdominal surgery (stomach, small and large intestines, liver, spleen, kidneys, diaphragm)
  • Minimally invasive surgery
  • Pectus excavatum (Nuss procedure)
  • Precocious puberty (Supprelin implants)
  • Umbilical hernia
  • Undescended testicle (orchiopexy)

  • Troy M Reyna MD
    • Appointments:
    • Specialty: Pediatric Surgery
    • Board Certified: Surgery, Pediatric Surgery
    • Additional Languages: Spanish
    • On Staff at: CHOC Children's Hospital and CHOC Children's at Mission Hospital

Dr. Reyna's Publications


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.

Hernias and Children: Dr. Reyna

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

Appendix & Appendicitis: Dr. Reyna

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

Appendicitis Signs & Symptoms: Dr. Reyna

In this video Dr. Troy Reyna, pediatric surgeon at CHOC Children's, talks about the signs and symptons of appendicitis, and what parents should look for.

Surgery – What to Expect: Dr. Reyna

In this video Dr. Troy Reyna, pediatric surgeon, tells what the patient and parent can expect with surgery for appendicitis, including recovery period.

Health Topics

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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UC Irvine

CHOC Children's is affiliated with the UC Irvine School of Medicine