Dr. Mason S. Stilwell

Kimona Issa is an Orthopedics provider in Johnson City, New York. Dr. Issa is highly rated in 7 conditions, according to our data. His top areas of expertise are Osteonecrosis, Kienbock's Disease, Osteoarthritis, Knee Replacement, and Hip Replacement.

Louis Grandizio is an Orthopedics provider in Scranton, Pennsylvania. Dr. Grandizio is highly rated in 4 conditions, according to our data. His top areas of expertise are Carpal Tunnel Syndrome, Mononeuritis Multiplex, Trigger Thumb, Osteotomy, and Endoscopy.

Ronald DiSimone, MD, is an orthopaedic surgeon and is certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. He is the medical director of orthopaedic care at UPMC in North Central Pa. He received his medical degree from Hahnemann University School of Medicine and completed his residency at Hahnemann University Hospital. Dr. DiSimone’s clinical interests include orthopaedic spine, robotic total knee replacement, and direct anterior total hip replacement. He is a member of the American Academy of Orthopaedic Surgeons (AAOS), North American Spine Society, Eastern Orthopaedic Association, Pennsylvania Orthopaedic Society, and Lycoming County Medical Society. In his free time, he enjoys hiking and skiing. Dr. DiSimone is designated as a UPMC Health Plan Hip and Knee Joint Replacement Surgery Center of Excellence surgeon at UPMC Williamsport based on his commitment to quality care and outstanding patient experience. Dr. Disimone is highly rated in 16 conditions, according to our data. His top areas of expertise are Spondylolisthesis, Osteoarthritis, Fractured Spine, Microdiscectomy, and Cervical Disc Surgery.