Gastroenterology, Hepatology and Nutrition

Pediatric gastroenterology is the branch of medicine that studies the digestive system and its diseases in children. The digestive system, also known as the gastrointestinal (GI) tract, includes the stomach, esophagus, small intestine, colon, rectum, pancreas, liver, gallbladder and bile ducts.

What is a pediatric gastroenterologist?

A pediatric gastroenterologist is a doctor who specializes in caring for children who have problems with their digestive systems or livers or are experiencing nutritional issues. Pediatric gastroenterologists have had additional years of training to care for infants, children and teens with GI disorders.

What is the difference between a gastroenterologist and hepatologist?

Hepatology is a subspecialty of gastroenterology. A pediatric hepatologist specializes in treating children with conditions of the liver, pancreas, gallbladder and biliary tree.

When should my child see a gastroenterologist?

If your child is experiencing bloody, painful, less frequent or foul-smelling stool, or if you notice bloody or persistent vomiting, you should call your child’s pediatrician. Your child’s pediatrician may suggest your child be seen by a pediatric gastroenterologist.

Children’s Healthcare of Atlanta is home to one of the leading pediatric gastroenterology, hepatology and nutrition programs in the country. We manage more than 3,150 inpatient and 41,000 outpatient gastroenterology visits each year. U.S. News & World Report has ranked our Gastroenterology and GI Surgery Program as one of the best in the nation.

Our specialized team combines expertise in pediatric gastroenterology, hepatology and nutrition with advanced diagnostic and therapeutic technologies to provide outstanding care to children with common and complex GI, liver and nutritional conditions. From inflammatory bowel disease (IBD) to gastroesophageal reflux disease (GERD) and nonalcoholic fatty liver disease, our team is here for your child.

At Children’s, our pediatric-trained doctors are skilled at diagnosing and treating children and teens with a wide range of GI, liver, pancreatic and nutritional disorders, from common to complex. Some of the most common digestive, GI and liver conditions in kids include:

Different procedures may be performed to help us determine the right diagnosis and develop the best treatment plan for your child. Your child may have one or more of the following procedures:

• Colonoscopy: A colonoscopy is a test that examines the large intestine by inserting a long, flexible, lighted tube called a colonoscope into the rectum.
• Endoscopy: This procedure uses an endoscope, which is a lighted, flexible instrument containing a computer chip and camera that is attached to a TV monitor, to examine the upper or lower GI tract.
• Capsule endoscopy: A capsule endoscopy uses a pill-sized video camera that is swallowed to allow a doctor to examine the middle part of the GI tract.
• Upper endoscopy: An upper endoscopy is a procedure that allows the doctor to see the esophagus (food tube), stomach and the first part of the small intestine with an endoscope.
• Bravo pH testing: The Bravo pH Monitoring System measures pH to test for GERD in older children. The doctor implants a small, temporary device on the wall of your child’s esophagus during an endoscopy. The device collects data about acid levels.
• pH probe study: A pH probe study measures the acid levels inside of the esophagus to test for GERD in younger children. The doctor inserts a thin probe through the nose and into your child’s esophagus to record acid levels.
• Manometry: A manometry is a test that examines how rectal muscles and nerves are working. The test helps determine the cause of anorectal constipation or encopresis (stool leakage). The doctor inserts a thin, flexible tube called a catheter into the rectum to record pressure. A small balloon attached to the tube may be inflated to assess reflexes.

Some of the additional services, treatments and procedures we offer include:

• Anorectal manometry
• Biologic medicine infusions
• Breath hydrogen analysis
• Endoscopic retrograde cholangiopancreatogram (ERCP)
• Esophageal band ligation
• Esophageal manometry/impedance-pH monitoring
• Esophagogastroduodenoscopy (EGD)
• Nutrition support services
• Percutaneous gastrostomy tube placement
• Sigmoidoscopy
• Video capsule endoscopy (VCE)

What is ERCP?

Endoscopic retrograde cholangiopancreatography (ERCP) is a specialized procedure that combines X-ray and the use of an endoscope to help our doctors access parts of a child’s pancreas and liver. Oftentimes, ERCP can prevent a child from undergoing an invasive surgery. This procedure helps treat conditions, such as:

• Jaundice
• Gall stones and bile stones
• Biliary and pancreatic duct abnormalities
• Pancreatitis
• Complications from a liver transplant and liver disease

At Children’s, we embrace collaboration among our pediatric specialists. Through this collaboration, we offer many multidisciplinary programs and clinics in which our gastroenterologists, hepatologists and nutritionists participate. In fact, we offer the most specialized programs in the Southeast.

• Advanced Pancreatic Care Program: We treat a variety of pancreatic disease cases ranging from acute pancreatitis to rare pancreatic tumors.
• Aerodigestive Clinic: Our team is dedicated to finding the right answers and treatments for children with complex airway and digestive tract disorders.
• Eosinophilic esophagitis (EoE) and gastroenteritis: We offer consultations from a gastroenterologist, allergist and nutritionist for children with gastroenteritis, EoE and food allergies that affect the GI tract.
• Fecal Microbiota Transplant Program: This type of transplant involves transferring a healthy donor’s stool into a recipient’s digestive system to eliminate “bad” bacteria, such as C. diff.
• Feeding Program: We help children with chronic and severe disruptions in their relationship with food.
• Intestinal Rehabilitation Program: We provide comprehensive care—from medical to nutritional to surgical management—to children with intestinal failure and short bowel syndrome.
• Liver Disease Program: We treat a variety of liver-related conditions and complications in children.
• Neurogastroenterology and Motility Program: We create highly specialized treatment plans for children who have digestion issues due to problems related to contractions in the gastric muscles.
• Pelvic and Anorectal Care Program: Our team cares for children with surgical diseases resulting in constipation, diarrhea, soiling and/or pain as a consequence of the disease.
• Strong4Life Clinic: Our team provides a holistic approach to obesity and weight-related conditions.

Our Gastroenterology, Hepatology and Nutrition Program is comprised of Children’s Physician Group providers and pediatric gastroenterologists in the community. This team of specialists works together to help ensure complete, coordinated care is delivered seamlessly at our hospitals for children and teens with GI and liver conditions. 

Physician leadership

The following physicians lead our Gastroenterology, Hepatology and Nutrition Program:

• Cary G Sauer, MD, Division Chief, Gastroenterology, Hepatology and Nutrition; Co-System Medical Director, Gastroenterology, Hepatology and Nutrition; Medical Director, GI Endoscopy and Diagnostics Program
• Antoinette Amevor, MD, Medical Director, Intestinal Rehabilitation
• Reuven Zev Cohen, MD, Medical Director, Advanced Pancreatic Care Program
• Jose M Garza, MD, Co-System Medical Director, Gastroenterology, Hepatology and Nutrition; Medical Director, Neurogastroenterology and Motility
• Nitika Gupta, MD, Clinical Director, Hepatology; Medical Director, Liver Transplant Program
• Dana Michelle Hines Dykes, MD, Medical Director, Improve Care Now, Scottish Rite Hospital 
• Barbara McElhanon, MD, Medical Director, Feeding Program
• Joanna Niklinska-Schirtz, MD, Medical Director, Improve Care Now
• Elaine Odiase, MD, Medical Director, Advanced and General Endoscopy; Co-Medical Director, ERCP; Clinical Director, Trans-nasal Endoscopy 
• Rene Romero, MD, Joseph H. Moss Chair, Pediatric Hepatology and Liver Transplant; System Medical Director, Solid Organ Transplant
• Field F Willingham, MD, Medical Director, Therapeutic Endoscopy; Co-Medical Director, ERCP

Children's Physician Group–Gastroenterology, Hepatology and Nutrition

Children's Physician Group is the largest pediatric multispecialty physician practice in Georgia with more than 500 doctors and 400 advanced practice providers who are employed by Children’s or serve as faculty members at Emory University School of Medicine. Children’s Physician Group–Gastroenterology, Hepatology and Nutrition providers include:

Gastroenterologists

• Adjowa Amevor, MD
• Katherine Black, MD
• Lauren Bloom, MD
• Reuven Zev Cohen, MD
• Subramaniam Kugathasan, MD
• David Lee, MD
• Chrissy Lopez, MD
• Barbara McElhanon, MD
• Shaunte McKay, MD
• Joanna Niklinska-Schirtz, MD
• Elaine Odiase, MD
• Teresa Oh, MD
• Sharmistha Rudra, MD
• Cary G Sauer, MD
• Vivek Shenoy, MD
• Chathruckan Rajendra, MD
• James Stevens, MD
• Lakshmi Suri, MBChB
• Tsega Temtem, MD

Hepatologists

• Reuven Zev Cohen, MD
• Nitika Gupta, MD
• David Lee, MD
• Chrissy Lopez, MD
• Rene Romero, MD
• James Stevens, MD
• Miriam Vos, MD, MS

Advanced endoscopists

• Elaine Odiase, MD
• Field F Willingham, MD

Advanced practice providers

• Seyi Adeyemi-Bajo, PA
• Jenissa Cortés, MS, RD, PA-C
• Michelle Dinser Worthington, CPNP
• Chris Fritzen, PA
• Sarah Jeffcoat, DNP, RN, CPNP-PC
• Victoria Marcy, PA-C
• Whitney Mink, MHS, PA-C

Psychologists

• Bonney Reed, PhD, Gastroenterology
• Jessica Buzenski, PhD, Gastroenterology

Private practice gastroenterologists in our program

We work closely with the following private practice physicians in our program to lead research, develop specialized programs and deliver seamless care to patients at our hospitals.

• Jeffrey A Blumenthal, MD
• Dana Michelle Hines Dykes, MD
• Jose M Garza, MD
• Benjamin D Gold, MD
• Jay A Hochman, MC
• Tatyana Hofmekler, MD
• Jeffery D Lewis, MD
• Larry Glen Lewis Jr, MD
• Steven Liu, MD
• Seth B Marcus, MD
• Tejas R Mehta, MD
• Aminu Mohammed, MD
• Nirav R Patel, MD
• Dinesh G Patel, MD
• Asiya Shakir, MD
• Olga M Sherrod, MD
• Jordan H Weitzner, MD

Children’s Physician Group–Gastroenterology, Hepatology and Nutrition offers outpatient GI and hepatology clinics in locations across metro Atlanta. ERCP and other procedures, like endoscopy, are performed at our hospitals.