Dr. Wagner is the medical director of the Gila Crossing Clinic on the Pima Indian Reservation south of Phoenix. Prior to this position, he was in private practice for 15 years in Chandler. Dr. Wagner is a member of the clinical faculty at the Arizona College of Osteopathic Medicine in Glendale, Arizona. He is also a Commander in the U.S. Navy Reserve, and was called to active duty in 2003 under Operation Noble Eagle/Enduring Freedom. He was assigned to Camp Pendleton Marine Corp Base for his tour of duty. Formerly, Dr. Wagner was the acting clinical director at Sells Indian Hospital in Sells, Arizona, a clinical lecturer at the University of Arizona Medical School, and the vice-chairman and chairman of the Family Medical Department at Mesa General Hospital. Dr. Wagner has served on the Arizona Osteopathic Association Committee on Comprehensive Planning.

He is a published author in Osteopathic Annals and is the recipient of numerous awards from the Mesa Association for Retarded Citizens and the Tempe Center for Rehabilitation. Dr. Wagner received his D.O. degree from Kirksville College of Osteopathic Medicine in Missouri and completed his residency in family practice at Richmond Heights General Hospital in Ohio. He is a member of the American Osteopathic Association and the American College of General Practice, and is Board Certified in Family Medicine.