Call : 716-878-7793 for appointments or information


Southwestern Office Park, Suite 712

4535 Southwestern Blvd.

Hamburg, New York   14075


140 Hodge Ave. (Outpatient Clinics)

Buffalo, New York  14222

John R. Oishei Children's Hospital

currently under construction

Our History

University Commons

1404 Sweet Home Rd., Suite 5

Amherst, New York   14228

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 five Pediatric GI board certified / board eligible physicians:  Co-Chiefs, Robert D. Baker, MD, PhD and Susan S. Baker, MD, PhD and Razan Alkhouri, MBBS 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. 

Practice Locations:

Digestive Diseases

and Nutrition Center

Call : 716-878-7793for appointments or information

Main St.  Buffalo, New York

Women and Children's Hospital of Buffalo

soon to be John R. Oishei Women & Children's Hospital

219 Bryant St.

Buffalo, New York 14222

Administrative Offices:


239 Bryant St.

Buffalo, New York   14222


fax 716-888-3842