His areas of expertise include the following: adrenalectomy (adrenal surgery), thyroid problems, and colectomy (colon resection). His patients gave him an average rating of 3.5 out of 5 stars. Dr. Tershak is in-network for Aetna and Medicare insurance. Before completing his residency at Albert Einstein Medical Center, Philadelphia, Dr. Tershak attended medical school at Thomas Jefferson University, Jefferson Medical College. He is affiliated with Carilion Clinic.