Nathan C. Winek, MD Nathan C. Winek, MD, is an orthopaedic hand and upper extremity surgeon with AHN Orthopaedic Institute, specializing in microvascular surgery, nerve repair, small joint arthroscopy, and denervation. He provides expert care for compressive neuropathies, tendinopathies, ligament injuries, arthritis, and fractures of the upper extremity. Dr. Winek attended medical school at Temple University in Philadelphia, Pennsylvania. He completed his residency at Allegheny Health Network in Pittsburgh, Pennsylvania, followed by a fellowship in hand, upper extremity, and microvascular surgery at Columbia University Irving Medical Center/NewYork-Presbyterian in New York, New York. Dr. Winek welcomes patients aged 18 and older.