Gastroenterology & Nutrition

The staff of Pediatric Gastroenterology and Nutrition evaluates and manages a variety of problems affecting the digestive tract, liver and pancreas in infants, children and adolescents. Such problems include but are not limited to abdominal pain, constipation, chronic diarrhea, failure to thrive, feeding difficulty, gastrointestinal bleeding, gastroesophageal reflux, inflammatory bowel disease, pancreatitis, hepatitis and jaundice.  Diagnostic testing including pH probes, liver biopsies and endoscopic procedures (look inside the body cavity) are available. We also have a comprehensive multidisciplinary feeding clinic (see feeding services).

Douglas Field, M.D. received his medical degree from Jefferson Medical College. He completed his Pediatric residency training at Thomas Jefferson University Hospital and Pediatric Gastroenterology and Nutrition fellowship at John's Hopkins Hospital. He joined the Division of Pediatric Gastroenterology and Nutrition in 1995 and currently is the Division Chief. His clinical interests include dysphagia, food refusal and feeding difficulty in children. He is currently the Medical Director of the Penn State Children's Hospital Feeding Program.

Chandran Alexander, M.D. received his medical degree form Christian Medical College and Hospital (India). He completed his Pediatric residency training at Children's Hospital of Michigan and Pediatric Gastroenterology and Nutrition fellowship at Brown University Medical School/Hasboro Children's Hospital. Dr. Alexander joined our faculty in 2010.

Tolulope O. Falaiye, M.D., MSCI received her medical degree from the University of Virginia. She completed her Pediatric residency training at the University of Florida Health Shands Children's Hospital and Pediatric Gastroenterology and Nutrition fellowship at the Monroe Carell Jr. Children's Hospital at Vanderbilt. Her clinical interests include inflammatory bowel disease. Dr. Falaiye joined our faculty in 2013.

Punit Jhaveri, M.D. received his medical degree from Ross University (West Indies). He completed his Pediatric residency training at University of Medicine and Dentistry of New Jersey and Pediatric Gastroenterology and Nutrition fellowship at Johns Hopkins Hospital. Dr. Jhaveri will be joining our faculty in October 2010.

Marc Schaefer, M.D. received his medical degree from Sackler School of Medicine-New York State American Branch. He completed his Pediatric residency training at Maimonides Medical Center, Infants and Children's Hospital of Brooklyn and Pediatric Gastroenterology and Nutrition fellowship at Brown University Medical School/Hasboro Children's Hospital. His clinical interests include inflammatory bowel disease. Dr. Schaefer joined our faculty in 2009.

William Wenner, M.D. received his medical degree from Penn State College of Medicine and was trained in pediatrics at Stanford University Hospital in California. He completed his Pediatric Gastroenterology and Nutrition training at The Children's Hospital of Philadelphia. Publishing over 40 articles and books, he has practiced at the University of California Davis and The Children's Hospital of Philadelphia for almost 20 years.  He has a special interest in Inflammatory Bowel Disease. Dr. Wenner joined our faculty in 2008 and currently is the Director of Pediatric Gastroenterology and Nutrition Clinical service.

Keith Williams, Ph.D.  is the Director of the Penn State Hershey Children's Hospital Feeding Program. He is an Associate Professor of Pediatrics at the Penn State College of Medicine. Prior to coming to Hershey, Dr. Williams was a faculty member in the Kennedy Krieger Institute's Pediatric Feeding Disorders Program. He specializes in the behavioral treatment of feeding disorders. Dr. Williams also treats a wide array of behavior problems found among children with developmental disabilities. He is licensed as a psychologist in Maryland and Pennsylvania and is also a board Certified Behavior Analyst.

Lisa KH Ingalls, CRNP is a Nurse Practitioner. She has a Master's Degree in Nursing from the University of Pennsylvania and has been in the Division of Pediatric Gastroenterology and Nutrition since 2000.

Laurie A. Yuncker, CRNP is a Certified Pediatric Nurse Practitioner. She received her Master of Science degree from the University of Maryland at Baltimore. She has been with the Division of Pediatric Gastroenterology and Nutrition since 2003. Prior to joining the Division of Pediatric Gastroenterology and Nutrition she worked in the Division of Pediatric Neurology.

The Division of Pediatric Gastroenterology and Nutrition has outreach clinics in

Providers: Lisa Ingalls, CRNP and Douglas Field, M.D.

Providers: Laurie Yuncker, CRNP and Douglas Field, M.D.

Provider: Bart Rountree, M.D.

Provider: Marc Schaefer, M.D., Keith Williams, Ph.D.

Providers: Laurie Yuncker, CRNP and Douglas Field, M.D.

Information regarding gastrointestinal conditions which may affect your child can be found at NASPGHAN.ORG and CCFA.ORG.

To make an appointment with Pediatric Gastroenterology, please call 717-531-5901 and choose Option 3.

Below are links to the patient letter and questionnaire containing information that will be helpful in preparing for your appointment with Pediatric Gastroenterology.

New Patient Letter

New Patient Questionnaire