Dr. John Howland Mattox, born in Greeley Colorado, November 5, 1937, died peacefully at home in Scottsdale, Arizona, November 16, 2022. He earned a medical degree from the University of Colorado in 1962, marking the beginning of a decades-long career largely focused on research and the education and training of thousands of medical assistants. Dr. Mattox has served on the medical faculty of a number of prominent institutions, including the universities of Arizona, Nebraska, New Mexico, Washington, and the Rochester School of Medicine and Dentistry. In addition, he specialized in endocrinology and became an early pioneer in the treatment of infertility. Dr. Mattox was also an examiner for the American Board of Obstetrics and Gynecology and his research, scientific contributions and professional awards are too numerous to describe here. He served as President and Program Director of what was then Banner Good Samaritan Regional Medical Center in Phoenix from 1990 to 2012, and was designated the inaugural First Executive Chair, Obstetrics and Gynecology, University of Arizona, College of Medicine, Phoenix. in 2012. There are two medical education awards named after him. Dr. Mattox was a proud veteran of the United States Army, honorably discharged as a major after serving his country from 1966 to 1969 in Munich, Germany. certified instructor for the Professional Ski Instructors of America. He was a deeply spiritual man with strong faith in Christ and the resilience of the human spirit. He is survived by his wife, Janet Post, her sons, Troy and Adam Zimmerman, and their families; his children, Gretchen, John, and Paul Mattox, and their families; and nine grandchildren, Runa, Scarlett, Lilly, Charlie, Emy, Ian, Sydney, Maddy, and Melena. In lieu of flowers, send a donation to Hospice of the Valley, Northeast Clinical Office, 16117 N. 76th St. Scottsdale, AZ 85260.