Trusted Shoulder Specialist in Lancaster | Arthroscopic Latarjet, Shoulder Replacement & Rotator Cuff Repair. Michael J. Bercik Jr., MD, is a board-certified orthopedic surgeon with sub-specialty training in shoulder surgery, elbow surgery, and orthopedic trauma. With offices in Lancaster, Ephrata, and Mount Joy, Pennsylvania, he has proudly served Lancaster County and the surrounding Pennsylvania communities with comprehensive, superior orthopedic care since 1985. read full review »