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Dr. Leonel Rodriguez ynhch

Gastroenterology & Hepatology

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Our gastroenterology and hepatology doctors are nationally recognized experts in all aspects of nutritional, liver, pancreatic and gastrointestinal disorders, and skilled in the most up-to-date and innovative diagnostic and therapeutic approaches for children.

Pediatric Gastroenterology

Yale New Haven Children’s Hospital offers a full array of pediatric gastroenterology programs that provide diagnostic and treatment services for children and adolescents with a wide range of common and rare gastrointestinal disorders.

Within these programs, board-certified pediatric specialists work with multidisciplinary teams inclusive of a pediatric gastroenterologist and other pediatric subspecialists, surgical subspecialists, speech and language therapists, dietitians, nurse coordinators, child life specialists and social workers. Team members are specially trained in childhood development. Working in tandem with the family, the team establishes an individualized care plan for each patient to address his/her unique needs.

In addition, our pediatric gastroenterologists also see patients for general gastrointestinal conditions, including:

  • Abdominal pain
  • Chronic diarrhea
  • Constipation
  • Food allergy
  • Gastrointestinal reflux
  • Helicobacter pylon infection
  • Intestinal polyps
  • Lactose intolerance
  • Malabsorption
  • Pancreatitis
  • Peptic ulcer disease
  • Polyps
  • Poor weight gain
  • Vomiting

Pediatric Hepatology

Yale New Haven Children’s Hospital is dedicated to providing the best pediatric hepatology care and outcomes for children with liver disease. Guided by a family-centered care philosophy in which we partner with the whole family to treat the child, not just the disease.

Our team of pediatric surgeons and hepatologists are nationally recognized for their expertise in treating a wide variety of disorders that impact normal liver function. Working in collaboration with Yale New Haven Children's Hospital specialists ensures we're equipped to manage any liver disease that may affect your child and your family.

The Pediatric Hepatology program offers medical care to patients before and after liver transplant. Our team has cared for pediatric liver transplant recipients with a combined experience of over two decades and is committed to providing the best possible outcomes for our patients.

Learn more about the Pediatric Hepatology Program

Pediatric Endoscopy Center

The Gastroenterology and Hepatology Program offers a full array of diagnostic tests and services, which are performed in a state-of-the-art Pediatric Endoscopy Center located in the Children's Hospital. The center offers the latest video-based endoscopy equipment specifically designed for use in children. Procedures include diagnostic endoscopy, pH probe studies and liver biopsy. Therapeutic endoscopy including sclerotherapy, band ligation, foreign body removal and polypectomy, are available.

Learn more about Diagnostic and Therapeutic Procedures

IB-STIM for Patients with Disorders of Gut Brain Interaction (DGBIs)

IB-STIM is a small electrical device worn behind the ear that stimulates cranial nerves to help reduce abdominal discomfort in patients with Disorders of Gut Brain Interaction (DGBIs), such as functional abdominal pain, irritable bowel syndrome, and functional dyspepsia, in adolescents 11 to 18 years old. 

Learn more about these conditions

How IB-STIM works

The device is taped behind one ear and emits gentle electrical pulses which stimulates certain areas of the brain that process pain and reduce pain signaling. The device has four wires that your child’s specialist places near nerve bundles on the external ear surface. Patients wear the IB-STIM device for 120 hours (5 days) consecutively with a two-day break. This is repeated for a duration of 4 weeks.

Who can benefit from IB-STIM

IB-STIM helps adolescent patients with Disorders of Gut Brain Interaction (DGBIs) but may not be recommended for all children with these conditions. Many patients have seen a decrease in abdominal pain and other symptoms within a few weeks of wearing the device. The device is not recommended for patients with a pacemaker, hemophilia or a skin condition called psoriasis vulgaris. 


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