The orthopaedic specialists at Chester County Hospital are physicians trained to diagnose and care for disorders of the bones, joints, muscles, ligaments, tendons, nerves and skin - elements that make up the musculoskeletal system. They are involved in all aspects of musculoskeletal health and use medical, physical and rehabilitative methods, as well as surgery, to diagnose and treat problems. Our orthopaedic surgeons provide a full range of services and many also specialize in one or several areas such as the foot, hand, shoulder, spine, hip or knee or sports medicine.

Our doctors keep abreast of changes in surgical techniques and emerging technologies to offer patients the most up-to-date procedures. Members of Chester County Hospital surgical staff are board certified in their areas of expertise. And they treat patients at locations all across Chester County, PA.

Chester County Hospital orthopaedics specialists lecture on a variety of topics related to bone and joint problems --  ranging from arthritis to pain management to the latest surgical procedures -- to help patients of all ages understand and make sound decisions about their orthopaedic care.



John Benner, IV, MD  John Benner, IV, MD
A member of Chester County Hospital Medical Staff since 1978, Dr. Benner serves as Chief of the Section of Orthopaedics, Department of Surgery at Chester County Hospital. He received his medical degree from Jefferson Medical College of Thomas Jefferson University. He completed an internship at Abington Memorial Hospital, a residency at Thomas Jefferson University and additional training at Rancho Los Amigos Hospital for spinal chord injury and low back management. He is a past recipient of the Everett J. Gordon Award in Orthopaedics and is board certified in Orthopaedic Surgery. Dr. Benner is a fellow of the American Academy of Orthopaedic Surgery and has been in private practice with Chester County Orthopaedic Associates, Ltd., since 1978. He is a member of Chester County Hospital Board of Directors. Learn More! >>
 Daniel Evering, Jr., DO Daniel Evering, Jr., DO
A member of the Chester County Hospital Medical Staff since 2023, Dr. Daniel Evering is a fellowship-trained primary care sports medicine physician. He is board-certified in both sports medicine and family medicine. He has a breadth of event coverage experience, including football, basketball, wrestling, soccer, lacrosse, and field hockey. He has also covered the Philadelphia Rock 'n' Roll Half Marathon, the Escape Triathlon Series in Philadelphia, and the Marine Corps Marathon in Arlington, Virginia. Previously, he served as the assistant team physician for the University of Delaware football team and the Philadelphia Union of Major League Soccer. Along with sports medicine, Dr. Evering's expertise include fracture care, concussion management, and injections for pain management. 
 Daniel C. Farber, MD Daniel C. Farber, MD
Board certified in Orthopaedic Surgery, Dr. Farber received his medical degree from the University of Maryland School of Medicine and completed his internship and residency at Penn State's Milton S. Hershey Medical Center. Dr. Farber received his fellowship at the Mayo Clinic - Jacksonville. Dr. Farber specializes in the treatment of all disorders of the foot and ankle ranging from clubfoot to total ankle replacement surgery. Learn More! >>
 

J. Rush Fisher, MD
Dr. Fisher earned his medical degree from the University of Pennsylvania School of Medicine. He went on to complete his residency in orthopaedic surgery at the Hospital of the University of Pennsylvania, followed by a fellowship in reconstructive spinal surgery with Henry H. Bohlman, MD, at the Case Western Reserve University School of Medicine. Dr. Fisher taught as an assistant professor of orthopaedic surgery at the School of Medicine at the University of Kentucky. In 2000, he co-founded the Christiana Spine Center in Newark, Delaware and was chief of the spine section at Christiana Care from 2007 to 2021.

Dr. Fisher's clinical interests include diagnosing and treating complex spinal conditions such as adult spinal deformity. He specializes in cervical and lumbar disc replacement surgery, endoscopic spine surgery and minimally invasive lateral fusions. Learn More! >>

 Andrew S. Frankel, MD Andrew S. Frankel, MD
A member of Chester County Hospital Medical Staff since 1994, Dr. Frankel received his medical degree from the University of Pennsylvania School of Medicine. He completed his orthopaedic residency at the Thomas Jefferson University Hospital where he went on to complete a fellowship in Adult Reconstruction. Dr. Frankel is Board Certified in Orthopaedic Surgery. Learn More! >>
 Sagi M. Kuznits, MD

Sagi M. Kuznits, MD
Dr. Kuznits is a board-certified neurosurgeon who performs cranial and spinal surgeries to treat degenerative, neoplastic, infectious, and trauma-related conditions. A native of the Philadelphia area, he has been providing neurosurgical care to the residents of Philadelphia's Western Suburbs since 2000. Dr. Kuznits received his medical degree at Temple University School of Medicine Philadelphia, PA and completed his internship and residency at Northwestern University in Chicago, IL. In 2008, he established his practice dedicated to providing advanced diagnostic and therapeutic procedures for treating spinal and cranial conditions. Dr. Kuznits performs simple as well as complex revision surgery for cervical, thoracic, lumbar and sacroiliac conditions and employs minimally-invasive approaches whenever possible and appropriate. In addition, he performs CyberKnife® radiosurgery and image-guided, frameless stereotactic surgery to treat benign and malignant brain tumors, as well as neuro-modulation procedures to treat neuropathic pain. Dr. Kuznits also evaluates and treats nonsurgical conditions such as concussion, fall and balance issues, and neck and back pain. Learn More! >>

Stephen Y. Liu, MD  Stephen Y. Liu, MD
Dr. Liu is a board-certified Orthopaedic Surgeon specializing in disorders of the shoulder, elbow, wrist, and hand. Dr. Liu received his medical degree from Tufts University School of Medicine and completed his internship and residency in orthopaedic surgery at the Hospital of the University of Pennsylvania. He completed a fellowship at the University of Pittsburgh Medical Center in hand and upper extremities. Learn More! >>
 Christopher J. Lyons, MD Christopher J. Lyons, MD
Dr. Lyons is a graduate of the Temple University School of Medicine, where he completed a surgical residency with the Department of Orthopaedic Surgery and Sports Medicine. He provides care for a multitude of Orthopaedic conditions, such as arthritis, fractures, carpal tunnel syndrome, and has extensive experience as a trauma surgeon. Dr. Lyons performs minimally invasive total knee and hip replacements. He is a fellow of the American Academy of Orthopaedic Surgery. He is a past recipient of the John W. Lachman Award for Excellence in Orthopaedic Surgery and the Mary P. Wiedeman Award for Excellence in Physiology Research. Learn More! >>

 John P. Manta, MD

John P. Manta, MD
John P. Manta, M.D. is a Board Certified Orthopaedic Surgeon with fellowship training in sports medicine and arthroscopic knee and shoulder surgery. He completed medical school, a general surgery internship, and an Orthopaedic residency at Temple University in Philadelphia. Dr. Manta continued his training with a fellowship in sports medicine at Georgetown University, where he worked with some of the leaders in the sports medicine field. Dr. Manta has published several papers and original articles on topics such as anterior cruciate ligament injuries and shoulder abnormalities. Additionally, Dr. Manta has been elected to membership in the American Orthopaedic Society for Sports Medicine and the American Academy of Orthopaedic Surgeons. Learn More! >>

Todd A. Michener, MD
Todd A. Michener, MD
A member of Chester County Hospital Medical Staff since 2007, Dr. Michener graduated from Vanderbilt University School of Medicine in Nashville, TN. He completed an Orthopaedic Surgery residency at the University of Pennsylvania in Philadelphia, and a Sports Medicine fellowship at Steadman Hawkins Clinic of the Carolinas in Spartanburg, SC. Dr. Michener practices general orthopaedics with concentrations in sports medicine and arthroscopic surgery of the shoulder, knee, elbow and hip, including arthroscopic rotator cuff repair, tennis elbow release and knee ligament reconstruction. Board Eligible Orthopaedic Surgeon, Dr. Michener is in practice with Chester County Orthopaedic Associates. Learn More! >>
Andrew Old, MD  Andrew Old, MD
Dr. Old graduated from Harvard University. He completed his residency training in Orthopaedic Surgery at Hahnemann University Hospital in Philadelphia followed by a fellowship in Adult Reconstruction of the Hip and Knee at the Insall Scott Kelly Institute in New York City. He is certified in robotic assisted surgery and computer navigation. Dr. Old focuses on meniscal injuries, cruciate ligament reconstruction, fractures around the hip and knee, partial knee replacement, total knee and hip replacements for end stage arthritis, and complex revisions or repeat surgery in the hip and knee. Dr. Old is in practice with Premier Orthopaedics and Sports Medicine Associates, Chester County Orthopaedics Division, with locations in West Chester, Kennett Square and West Grove. Learn More! >>
Sherif Sherif, MD  Sherif Sherif, MD
Dr. Sherif recently completed a spine fellowship at Penn Medicine, after also completing a spine fellowship at Massachusetts General Hospital. He received a Master’s Degree in Biology from Tanta University and his Medical Degree from Cairo University. He specializes in Orthopaedic Spine Surgery including degenerative spine disease, minimally invasive spine surgery, adult spine deformity, spine trauma, spine infections and tumors. Learn More! >>
 Cheston Simmons, Jr., MD

Cheston Simmons, Jr., MD
A member of Chester County Hospital Medical Staff since 1994, Dr. Simmons received his medical degree from Jefferson Medical College of Thomas Jefferson University. He completed an internship at Graduate Hospital, a residency at Thomas Jefferson University Hospital, a research fellowship at The Rothman Institute in Philadelphia and a fellowship in joint replacement and spinal surgery at The New England Baptist Hospital in Boston. He is past recipient of the Everett J. Gordon Award for Clinical Excellence in Orthopaedics and previously served as a staff physician with the New England Baptist Hospital. Dr. Simmons is Board Certified in Orthopaedic Surgery and is a fellow of the American Academy of Orthopaedic Surgery. He has been in private practice with Chester County Orthopaedics Associates, Ltd., since 1994. Learn More! >>

Kimberly Stevenson, MD  Kimberly L. Stevenson, MD
Dr. Kimberly Stevenson joined Chester County Hospital’s medical staff in 2022. She is an orthopaedic surgeon specializing in hip and knee reconstruction. She manages traumatic and degenerative diseases of the hip and knee, including osteoarthritis, post-traumatic arthritis, avascular necrosis, deformity, trauma and infection. Dr. Stevenson’s practice includes customized operative and non-operative interventions to help restore patients' mobility and get them back to doing the activities they love. After attending medical school at Georgetown University, Dr. Stevenson completed her residency in Orthopaedic Surgery at the University of Pennsylvania. She then completed a fellowship in Adult Reconstruction/Joint Replacement at the University of Utah in Salt Lake City, UT, which is regarded as one of the top Adult Reconstruction fellowships in the nation. Dr. Stevenson is a board-certified orthopaedic surgeon and sees patients at the Penn Orthopaedics locations in Exton, Valley Forge and Westtown. Learn More! >>
Mark E. Tantorski, D.O.  Mark E. Tantorski, DO
A member of Chester County Hospital Medical Staff since 2012, Dr. Tantorski received his medical degree from the University Of New England College Of Osteopathic Medicine. He completed his orthopaedic residency at Philadelphia College of Osteopathic Medicine and a fellowship in spinal surgery at New England Baptist Hospital. Board eligible orthopaedic surgeon, Dr. Tantorski is a member of the North American Spine Society, the American Academy of Orthopaedic Surgeons, and the American Osteopathic Academy of Orthopaedics. Dr. Tantorski is an orthopaedic surgeon with subspecialty training in the surgical management of adult spinal disorders. Learn More! >> 
Adrienne Towsen, MD 

Adrienne Towsen, MD 
A member of Chester County Hospital Medical Staff since 2006, Dr. Towsen specializes in sports medicine, arthroscopic surgery, and reconstructive surgery of the shoulder and knee. She completed her residency at Allegheny General Hospital in Pittsburgh, PA and went on to complete a fellowship in Sports Medicine at Thomas Jefferson University Hospital in Philadelphia, PA. In addition to offering general orthopaedic and fracture care, Dr. Towsen has extensive experience with advanced surgical techniques in the shoulder, knee and elbow. Procedures for the shoulder include rotator cuff repair, labral repair, AC joint reconstruction, superior capsular reconstruction, latarjet (for chronic shoulder instability), and total joint replacement (standard and reverse). She also performs the following procedures of the knee: all-inside ACL reconstruction, multiple ligament reconstruction, meniscal repair, medial patellofemoral ligament (MPFL) reconstruction, and total joint replacement. Procedures of the elbow include distal bicep tendon repair, ulnar nerve transposition, and medial/lateral epicondyle release (for chronic tendonitis). Dr. Towsen was named a Main Line Today "Top Doctor" . Learn More! >>

 

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