William J. Cassidy, 93, of Philadelphia, a former chief of orthopedic surgery at Northeastern Hospital, died Thursday, Feb. 20, of dementia at St. Joseph's Manor in Meadowbrook.
A Philadelphia native, Dr. Cassidy graduated from St. Joseph's Preparatory School in 1938 and from St. Joseph's College with a bachelor's degree in 1942.
He completed his medical degree at Temple University Medical School in 1945. He was a physician in the Navy Medical Corps during World War II.
On release from active duty, Dr. Cassidy set up a family practice in the Mount Airy section of Philadelphia.
But in mid-career, he found himself drawn to the specialty of orthopedic surgery, returning to Temple for a residency in the specialty. He earned a master's degree in orthopedic surgery from Temple and did advanced study at the University of Pennsylvania's Graduate School of Medicine.