Dr. Ronald Callenberger

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.

Terrance Foust, DO, is an orthopaedic surgeon and is certified in orthopaedic surgery by the American Osteopathic Board of Orthopaedic Surgery.  He received his medical degree from Philadelphia College of Osteopathic Medicine and completed his residency at Pinnacle Health System.Dr. Foust’s clinical interests include joint replacement, total joint replacement, arthritis, and more. He is a member of American Academy of Orthopaedic Surgeons (AAOS), American Osteopathic Association (AOA), American Osteopathic Academy of Orthopaedics (AOAO), and Pennsylvania Osteopathic Medical Association (POMA). Dr. Foust is highly rated in 7 conditions, according to our data. His top areas of expertise are Osteoarthritis, Bowlegs, Tendinitis, Hip Replacement, and Knee Replacement.

Paul Lin is an Orthopedics provider in Lewisburg, Pennsylvania. Dr. Lin is highly rated in 8 conditions, according to our data. His top areas of expertise are Sciatica, Osteoporosis, Postmenopausal Osteoporosis, and Spondylolisthesis.