The specialists at Northern Arizona Healthcare Gastroenterology are board-certified. To qualify for board certification, a physician must complete an additional five to seven years of specialty training in internal medicine and gastroenterology following medical school.
Our team has the knowledge and expertise to provide an accurate diagnosis and personalized treatment plan designed to relieve your symptoms and help you feel better fast.

Andrew Overhiser, MD

Minh Tran, MD
Physician Assistants

Cameron Allen, PA-C

Sandra Kellett, PA-C

Alexandra Scaccia, PA-C
Nurse Practitioners

Garyn Grijalva, FNP

Jennifer Quigley, FNP