Call : 716-323-0080 for appointments or information


Call : 716-323-0080   for appointments or information


1001 Main St.  Buffalo, New York

The Digestive Diseases and Nutrition Center (DDNC), was established in 1976, as one of the first US Pediatric GI and Nutrition centers by Dr. Emanuel Lebenthal.  Dr. Lebenthal trained many of today’s leaders in Pediatric Gastroenterology and Nutrition.  After Dr. Lebenthal left, the DDNC declined and Robert and Susan Baker were recruited in September 2000 to rejuvenate the division. 

In 2000 the division, renamed DDNC, began a planned extensive expansion that resulted in an increased availability of community clinics, clinical and basic science research programs, expanded laboratory assays and an accredited training program for fellows.  Currently the clinical faculty of the DDNC includes four Pediatric GI board certified / board eligible physicians:  Co-Chiefs, Robert D. Baker, MD, PhD and Susan S. Baker, MD, PhD and Diana Moya-Orjuela MD and Colleen Nugent, MD, MS.   There are two full time research faculty:  Lixin Zhu, PhD and Wensheng Liu, PhD.

The DDNC currently has six pediatric fellows who are studying the advanced care offered here. Members of the team include nurse practitioners, endoscopy nurses, dietitians, research nurses, an LPN and the office staff


Welcome to the Digestive Diseases & Nutrition Center (DDNC) at the Women and Children's Hospital of Buffalo and the University at Buffalo..

The mission of the DDNC is to prevent, diagnose, and treat gastrointestinal, nutritional, hepatic and pancreatic disease in children from birth through young adulthood.  All providers strive to deliver the best medicine for your child. The DDNC uses evidence based medicine and national algorithms when available.

The DDNC educates fellows, residents, students and health care providers.  To advance the understanding of gastrointestinal, nutritional, liver and pancreatic diseases in children, the faculty of the DDNC perform basic and clinical research, publishes and serve on national policy making committees. 

Southwestern Office Park, Suite 712

4535 Southwestern Blvd.

Hamburg, New York   14075

John R. Oishei Children's Hospital

currently under construction 

Practice Locations:


Our History

Digestive Diseases

and Nutrition Center

John R. Oishei Children’s Hospital (Nov. 2017)

formerly Women and Children's Hospital of Buffalol

____  Ellicott Street.

Buffalo, New York 14203

Administrative Offices:


1001 Main Street

Buffalo, New York   14203


fax 716-323-0295

1001 Main St. (New Outpatient Clinics)

Buffalo, New York  14203

University Commons

1404 Sweet Home Rd., Suite 5

Amherst, New York   14228