Dr. William Sima graduated from the University of Southern California (USC) in 1981, with a Bachelor’s Degree in Biological Sciences, and earned his Doctor of Medicine from USC in 1985.

He continued his training at the USC Medical Center in Los Angeles County and completed his internship in orthopedic surgery in 1986. After a residency in orthopedic surgery in 1990, Dr. Sima completed a fellowship in foot and ankle surgery at Harbor UCLA Medical Center, Los Angeles, California.

Dr. Sima is currently the Medical Director of the Posada Surgery Center in Templeton, California.

Sports Medicine
Anterior cruciate ligament reconstruction
Rotator cuff repair
Shoulder instability
Carpal tunnel surgery
Foot reconstruction
Minimally invasive knee and hip replacement
Fractures involving hip and femur
Carpal tunnel syndrome Arthritis of the foot
Diplomat, American Board of Orthopedic Surgery
Fellow, American Academy of Orthopedic Surgery
Recertification