About the GI Alliance Research Team

Our GI Alliance Research Team is comprised of individuals motivated to do what is best for our patients and lead a highly skilled team to address your specific needs.

Physician Leadership

Casey Chapman, MD

Gastroenterologist

Chief Medical Officer

Timothy Ritter, MD

Gastroenterologist

Senior Medical Research Director

Harry Sarles, MD

Gastroenterologist

Senior Associate Medical Director

Chirag Trivedi, DO

Gastroenterologist

Regional Medical Director

Jonathan Rosenberg, MD

Gastroenterologist

Regional Medical Director

George Catinis, MD

Gastroenterologist

Education Program Director

Administrative Leadership

Matthew Burkemper

Senior Research Director

Melinda Dollar-Wilson

Director of QA/QC

Rosanna Vazquez

Director of Finance

Nicole Rodriguez

Program Coordinator

Milhen James

Contracts Manager

Amanda Hatley

Education Coordinator

Jo Ann Gilbert

Regulatory Manager