John Michael Spine, DO

Dr. John Michael Spine founded Tri-County Medical Center in 2003 and is a graduate of Philadelphia College of Osteopathic Medicine. Over the years, Dr. Spine’s career has taken him from inner city hospitals in Philadelphia, Pittsburgh, and Houston to rural communities on the Eastern Plains of Colorado, including a year at Keefe Memorial Hospital in Cheyenne Wells, Colorado, where he was the only physician in all of Cheyenne on duty.

Dr. Spine has thousands of hours of emergency room experience, including Ben Taub Hospital at Baylor University in Houston, one of the busiest trauma centers in the United States. He also worked on the Lakota Sioux Indian Reservation, one of the busiest emergency rooms in South Dakota. After six years as a managing partner at Thornton Medical Center, Dr. Spine drew upon his diverse experiences to create Tri-County Medical Center in Erie, Colorado.

Marissa Mutzek, PA-C

Marissa, a Certified Physician Assistant, is a graduate of King’s College accelerated Physician Assistant program. Prior to joining Tr-County Medical Center she has worked in Dingmans Medical Center of Dingmans Ferry, Pennsylvania as well as serving at the Colville Confederated Tribes Medical Center in Eastern Washington, dedicating herself to providing care in smaller communities. In addition to providing medical care, she enjoys hiking, skiing and reading.