Mary Tierney

Dr. Mary Tierney, MD is a board‑eligible Family Medicine physician in Willow Street, PA, practicing at Walnut Grove Family Medicine, PLLC. She earned her MD from Ross University School of Medicine in 2012 and completed a Family Medicine residency at Penn State Milton S. Hershey Medical Center (2012‑2015). She also holds a subspecialty interest in non‑surgical sports medicine and has contributed to publications in the field.

In her Direct Primary Care practice, Dr. Tierney emphasizes personalized, relationship‑based care, offering same‑day appointments, longer visits, and a focus on preventive health. She is committed to building lasting patient‑provider partnerships and delivering comprehensive primary care without the constraints of insurance‑driven models.