The Team

Dr. Alan Buchman, M.D., M.S.P.H.

Dr. Alan Buchman (M.D., M.S.P.H.) is considered an internationally recognized expert in inflammatory bowel disease (Crohn’s disease, ulcerative colitis, celiac disease, and autoimmune enteritis), short bowel syndrome, nutritional support, intestinal failure/transplant, and parenteral/enteral nutrition and has been at the forefront of the development of new medications, devices, and foods to treat patients with complex gastrointestinal disorders. Read More

Ivo G. Tzvetanov, MD, FACS

Surgical Director, Small Intestine Transplant Program
Chief, Division of Transplant
Associate Professor of Surgery

Enrico Benedetti, MD, FACS

Warren H. Cole Chair in Surgery
Professor and Head
Department of Surgery

Lisa Mariano, BSN, RN

Pre Small Bowel Transplant Nurse

Debra Walczak, PhD(c), APN- ccns

Post Small Bowel Transplant Nurse

Robert E. Carroll, MD

Medical Director, Associate Professor of Medicine and Surgery
Division of Gastroenterology
Department of Medicine

Jessica Spitelli, APRN

Gastroenterology Nurse

Kelley Tappenden, Ph.D., R.D., FASPEN

Professor, Department Head, Kinesiology and Nutrition