Family Medicine Residency Program Faculty
Martin G. Johns, MD
Residency Program Director
Originally from Pittsburgh, Dr. Johns graduated from Temple University School of Medicine in Philadelphia, PA. He
completed his residency in Greenwood, SC in a small-town environment like the Shenango Valley. He then worked
as a hospitalist for 2 years affiliated with his family medicine residency before moving back to Western Pennsylvania.
For the last several years, Dr. Johns was the Associate Program Director at the UPMC McKeesport Family Medicine
Residency where he was also the Director of Inpatient Training and Medical Student education and the Co-director of
Maternity Care. Along with being the Residency Program Director, he is the Medical Director of the University of
Pittsburgh’s Physician Assistant Program. Dr. Johns has faculty appointments at the University of Pittsburgh,
LECOM, and OU-HCOM. His areas of interest include inpatient medicine, sports medicine, office-based procedures,
women’s health, and global health. Dr. Johns is board certified by the American Board of Family Medicine.
Kary Schroyer, DO
Associate Program Director and Medical Director of Shenango Valley Family Medicine
Originally from Western Pennsylvania, Dr. Schroyer received his degree from Philadelphia College of Osteopathic
Medicine and completed his residency at UPMC Horizon in 2000. He accepted the position of family medicine
residency practice program assistant director in July 2001. Dr. Schroyer has previously served in several leadership
roles at UPMC Horizon including Chief of Staff, Chairman of the Department of Family and Community Services,
Chairman of the OMT Committee, and as a member of the Medical Records Committee. In addition, he has provided
care to Westminster College students as their college physician. Dr. Schroyer was the co-owner of a private family
practice in New Wilmington for 17 years before founding and joining Shenango Valley Family Medicine UPMC in
October 2017. Dr. Schroyer sees patients in the areas of pediatrics, adolescents, adult medicine, and geriatrics. His
areas of interest include practice management and sleep medicine.
Dr. Schroyer is a lieutenant colonel in the United States Army Reserves and has completed several tours of duty,
including detainee care in Iraq in 2008 and is board certified by the American College of Osteopathic Family
Physicians.
Benjamin Shipton, DO
Dr. Shipton provides family medicine services at Primary Health Network (PHN) Mercer Primary Care. He has been
affiliated with PHN since July 2000 and serves as PHN's associate medical director. Dr. Shipton earned his medical
degree from Philadelphia College of Osteopathic Medicine and completed a family medicine residency at Mercy
Health System, Pittsburgh. He is certified by the American Board of Family Practice and has medical staff privileges
at UPMC Horizon.
Timothy Fullerton, DO
Dr. Fullerton is a graduate of Lake Erie College of Osteopathic Medicine and completed his family medicine residency
at UPMC St. Margaret in 2012. He joined Primary Health Network (PHN) Mercer Primary Care in 2012 and has been
working with the residency program ever since. Dr. Fullerton is board certified by the American Board of Family
Medicine and has medical staff privileges at UPMC Horizon.
