David B. Hoverson, M.D. • Cornelius P. Dooley, M.D. • Patrick G. Quinn, M.D.• Ricardo Calzada, M.D.• Alejandra Castillo-Roth, M.D. • Bradley Rowberry, M.D. • Jessica Doyle, PA-C • Bonnie Giacchetti, PA-C

Northern New Mexico Gastroenterology is committed to offering comprehensive care for digestive and liver diseases to residents throughout northern New Mexico; utilizing offices in Santa Fe, and Los Alamos.

Full endoscopic services are available primarily through the Endoscopy Center of Santa Fe, and also at Christus St. Vincent Hospital and Los Alamos Medical Center.

Dr. Hoverson is a native of Los Alamos and has been practicing in Santa Fe since 1985. Dr. Dooley is a native of Ireland and was a faculty member at the University of Southern California for 5 years prior to joining NNM Gastroenterology in 1991. Dr. Quinn is a native of Boston and joined the group in 1997 after spending 3 years as faculty at the University of New Mexico Health Sciences Center in Albuquerque. Dr. Calzada is a native of Guatemala and joined the practice in 2002, before this he was in academic and private practice in Detroit. Dr Rowberry is a native Idaho Fall and has been practicing in Los Alamos since 1988. Dr Castillo Roth is a native of Venezuela and joined the group in 2010, she is introducing endoscopic ultrasound (EUS) to Northern New Mexico. Jessica Doyle grow up in New Mexico and California, before joining NNM Gastroenterology in 2002 she was a family care provider in New Mexico and California. Bonnie Giacchetti is a native of Chicago, she joined the group in 2008, prior to this she was a family care provider in New Mexico. Our providers are involved in Hepatitis C research in order to offer the latest advances in treatment to northern New Mexico. Our physicians participate in teaching internal medicine residents from the University of New Mexico at Christus St. Vincent Hospital.