Our Physicians

Founded in 1989, the Ohio Orthopaedic Center is an orthopedic practice comprised of 4 surgeons, 3 physical therapists and a physician assistant. Our physicians have staff privileges at Fairfield Medical Center, River Valley Surgery Center, Grant Medical Center, Ohio State University, Pickerington Surgery Center, and the New Albany Surgical Hospital. With offices conveniently located in Lancaster and Gahanna and we see more than 10,000 patients annually and perform more than 1500 surgical procedures per year.

Keith A. Hollingsworth, M.D.

Dr. Hollingsworth is Board Certified by the American Board of Orthopedic Surgeons. He specializes in sports medicine focusing on knee and shoulder injuries. He is licensed to practice in Ohio and California.

He graduated with highest honors from Denison University resulting in his becoming a Beta Theta Pi National Scholar. He received his doctorate from the Ohio State University College of Medicine and went on to complete an orthopedic residency at the University of California, San Francisco. He later completed a Sports Medicine Fellowship at the University of Oregon where he also served as a team physician for the Oregon Ducks football and basketball programs. He currently serves as a team physician for numerous area schools.

Dr. Hollingsworth is an active member of the American Academy of Orthopedic Surgeons, Ohio Orthopedic Society, Ohio State Medical Association and the Fairfield County Medical Society.

Steven V. Priano, M.D.

Dr. Priano is a Board Certified orthopedic surgeon specializing in sports medicine. He is certified through the American Board of Orthopedic Surgeons focusing on arthroscopic knee and shoulder surgery.

He received his undergraduate degree from the University of Pittsburgh. He attended the Hahnemann University School of Medicine and then went on to an orthopedic residency at Allegheny General Hospital. Later Dr. Priano completed a Sports Medicine Fellowship at the Ohio State University College of Medicine and served as an assistant team physician for the Buckeyes. He currently serves as team physician to local high schools.

Dr. Priano is an active member of the American Academy of Orthopedic Surgeons, American Society for Sports Medicine, Arthroscopy Association of North America, Ohio State Medical Association and the Fairfield County Medical Society.

Mark M. D'Onofrio, MD

Dr. D'Onofrio is a board certified orthopedic surgeon specializing in total joint replacements. He is certified through the American Board of Orthopedic Surgeons and focuses on total knee and hip replacement.

He received his undergraduate degree from Case Western Reserve University graduating with honors. He then completed medical training at the Hahnemann School of Medicine and went on to an orthopedic residency at the Ohio State University College of Medicine where he was the chief resident from 2003-2004.

Dr. D'Onofrio is an active member of the American Academy of Orthopedic Surgeons, Ohio State Medical Association and the Fairfield County Medical Society.

David M. Vaziri, M.D.

Dr. Vaziri is a board certified orthopedic surgeon of the American Board of Orthopedic Surgeons. His practice focuses on general orthopedics to include adult and pediatric trauma and sports medicine.

He graduated from Vanderbilt University with a Bachelor of Arts degree. He then attended the University of West Virginia's School of Medicine where he received his medical degree. He completed an orthopedic residency at the St. Louis University of Medicine where he was chief resident from 1993 - 1994. Prior to his orthopedic training Dr. Vaziri completed a Fellowship in Musculoskeletal Tumor Research.

Dr. Vaziri is an active member of the American Academy of Orthopedic Surgeons, Ohio State Medical Association and the Fairfield County Medical Society.