Meet 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 Boards Certified by the American Board of Orthopedic Surgeons. He specializes in sports medicine with a focus on knee and shoulder injuries. He has been in practice since 1995.
While attending Dennison University, Dr. Hollingsworth achieved the highest academic honors and graduated as a Beta Theta Pi National Scholar. He received his doctorate from the Ohio State University College of Medicine the completed his orthopedic residency at the University of California, San Francisco. After that it was on to the University of Oregon where he completed a Sports Medicine Fellowship and served as a team physician for the University of Oregon Ducks Football and Basketball programs. Currently, he serves as team physician for numerous area high schools.
The list of professional organizations Dr. Hollingsworth is a member includes the American Academy of Orthopedic Surgeons, Ohio Orthopedic Society, Ohio State Medical Association, Fairfield County Medical Society and the Columbus Orthopedic 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.
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, M.D.
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.
James D. Miller, DO
James D. Miller, DO is an Orthopedic Surgeon specializing in Joint Replacement Surgery. Dr. Miller attended Lake Erie College of Osteopathic Medicine where he received the Academic Excellence Scholarship. After completing an Orthopedic Surgery Residency at Pinnacle Health Hospital System, Dr. Miller graduated from the Orthopedic Adult Reconstruction Fellowship program at the Allegheny Health Network in Pittsburgh, PA.
During his fellowship, Dr. Miller concentrated on robotic-assisted total knee replacement which helps to more precisely align the prosthetic implant for each individual patient. This technique is minimally invasive resulting in shorter operating room time and quicker recovery.
Another unique procedure he offers is the Direct Anterior approach for Total Hip Replacement surgery which provides minimal muscular trauma, less pain, easier recovery and a shorter hospital stay.
Dr. Miller will be seeing patients at our Lancaster location and will have privileges at Grant Medical Center, Fairfield Medical Center and Lancaster Specialty Surgery Center. Away from his medical practice he enjoys golf, skiing, travel and Cleveland sports.