Our Masters Surgeons
The master surgeons at St. Vincent Charity are all leaders in their respective specialties, but they share another common trait—they are passionate about helping people like you return to a healthy and active life. In fact, our surgeons choose to practice here because St. Vincent Charity is one of the rare places where clinical excellence is matched by an equally high level of personalized care. That’s what we mean when we say, “we are all caregivers.”
John S. Collis, M.D.
Board-certified in neurosurgery with a special interest in disorders and injuries of the cervical and lumbar spine, Dr. Collis completed residencies in general surgery and neurological surgery at the Cleveland Clinic. A teacher and clinician, he has served as an associate professor at Case Western Reserve University School of Medicine. Among the many devices he has helped to invent are surgical instruments for total disc replacement, a laminectomy retractor, and a table for disc puncture for testing and treatment. Dr. Collis has held roles as director of spinal surgery at the Cleveland Clinic, and as director of neurosurgery at both St. Vincent Charity Medical Center and Lutheran Hospital.
Louis Keppler, M.D.
Board-certified in orthopedic surgery, Dr. Keppler's clinical practice is broad, encompassing sports medicine, spinal reconstructive surgery, scoliosis surgery and joint replacement. Dr. Keppler completed a fellowship in pediatric orthopedics and spinal surgery at Texas Scottish Rite Hospital in Dallas, and residency training in orthopedic surgery at the Cleveland Clinic. He has a medical degree from St. Louis University School of Medicine. Dr. Keppler's dynamic professional practice includes serving as Medical Director for the Cleveland Indians from 2000 to 2004 and he has been a Team Orthopedic Surgeon with the club since 1991. A consultant to orthopedic device developers, Dr. Keppler is involved in implant and instrument design and ongoing clinical research. Dr. Keppler is the Clinical Surgical Research Adviser to the Joint Implant Surgery and Research Foundation and serves on the foundation's Tissue-Sparing Implant Study Group.
James S. Anderson, M.D.,F.A.C.S.
Dr. James Anderson has extensive experience in neurosurgery. A board-certified surgeon, Dr. Anderson has special interests in craniocervical junction, complex cervical spine and minimally invasive lumbar spine work. He joined St. Vincent Charity in September 2014 after 15 years at Metrohealth. He is a graduate of the California College of Medicine at the University of California, Irvine. He completed his internship and residency at the Cleveland Clinic Foundation and is fellowship trained in neurotrauma and spine. Dr. Anderson has served as associate professor of neurosurgery at Case Western Reserve University School of Medicine and has mentored medical students, residents and fellows throughout his career. In addition to holding a number of administrative roles, he has written and lectured extensively on neurosurgery topics and has led grant-funded research projects in Functional Electrical Stimulation (FES). Dr. Anderson is a Fellow in the American College of Surgeons, a member of the American Medical Association, Congress of Neurological Surgeons and the American Association of Neurological Surgeons.
Deborah A. Blades, M.D.
Board-certified in Neurological Surgery, Deborah A. Blades, M.D., brings more than 10 years of experience to The Spine and Orthopedic Institute team. She specializes in neck, spine, head and intracranial surgery. Prior to joining St. Vincent Charity Medical Center, Dr. Blades served as a Neurosurgeon at University Hospitals Case Medical Center and worked in the Department of Neurosurgery at Lexington Clinic in Kentucky. As a member of Cuyahoga Physician Network, Dr. Blades serves as a Professor of Neurological Surgery at Case Western Reserve University School of Medicine, where she attended medical school. She completed her internship and residency at University Hospitals of Cleveland, and her fellowship in Neurological Surgery and Orthopedic Surgery at New York University Medical Center, Veterans Medical Center of New York and Bellvue Hospital in New York City. Dr. Blades is the chairperson for the Neurology/Neurosurgery Section of the National Medical Association, and a member of several national and international professional organizations, including: African/African – American Health Council in West Africa; Scientific Committee, American Association of Neurological Surgeons; Task Force on Pedicle Screws in Spinal Reconstruction; and Public Relations Committee/Registration Committee – Congress of Neurological Surgeons. Dr. Blades has contributed chapters to medical books, as well as numerous articles to publications, such as Journal of Neurosurgery, Journal of Neurotrauma and Journal of Neuroscience Research. She has also conducted several research projects in this field of medicine.
Michael B. Canales, D.P.M.
Dr. Canales specializes in advanced podiatric medicine and surgery, providing complete medical and surgical care for injuries and conditions of the foot and ankle. His special interests include reconstructive surgery of the foot and ankle, trauma of the foot and ankle and sports medicine of the foot and ankle. Dr. Canales holds a degree in podiatric medicine from Ohio College of Podiatric Medicine and a bachelor's degree in molecular genetics from The Ohio State University. He completed his residency training in podiatric medicine and surgery at St. Vincent Charity Medical Center. Dr. Canales has co-authored several published works and serves as a national speaker on numerous podiatric medicine and surgery topics. In addition, Dr. Canales is a member of several professional organizations, including the American Podiatric Medical Association, the Ohio Podiatric Medical Association and the American College of Foot and Ankle Surgeons. Dr. Canales is Director of the Podiatry Residency Training Program and the Chief of Podiatry at St. Vincent Charity Medical Center.
George Friedhoff, D.O.
Dr. George Friedhoff is board-certified in internal medicine and sports medicine. He serves as a medical orthopedist in the Spine and Orthopedic Institute with special interests in acute/chronic back pain management, osteoarthritis, joint injections under musculoskeletal ultrasound and osteopathic manipulative treatment. Fellowship-trained in sports medicine, Dr. Friedhoff runs the Bump Clinic for school athletes and has special interests in concussions and overuse injuries for endurance athletes. He's held a number of sports medicine appointments, including team physician for Ohio University, Otterbein University, Ohio Athletic Conference Men’s and Women’s Cross Country Championships, Nationwide Columbus Marathon, NCAA Division III Track and Field Championships, PGA President’s Cup and All Ohio State Soccer Championships.
Mark R. Grubb, M.D.
Dr. Grubb received his medical degree from Ohio State University College of Medicine. He then completed his residency in orthopedic surgery at the prestigious Mayo Clinic and fellowship at Johns Hopkins University. Dr. Grubb is Board Certified by The American Board of Orthopedic Surgery. He is also a member of various faculties and societies. As an expert in minimally invasive spine surgery, Dr. Grubb has contributed to multiple spine journal articles and books. In addition, he presents his work at national and local meetings as well as travels all over the country teaching his techniques. Dr. Grubb is involved in research and innovation of several minimally invasive techniques and tools. Dr. Grubb has been performing minimally invasive surgery for nearly his entire career.
Patrick T. Hergenroeder, M.D.
Dr. Hergenroeder has a vast background as a board-certified orthopedic surgeon. A graduate of the University of Notre Dame and Georgetown University School of Medicine, he completed an internship and residency in orthopedic surgery at Akron General Medical Center. He has completed fellowships in hand surgery at University of California, San Diego; sports medicine and arthroscopy at the Hughston Orthopaedic Clinic in Columbus, Georgia; and arthroscopy at East Lansing Medical Plaza in East Lansing, Michigan. He is a charter member of the American Sports Medicine Fellowship Society, a Founding Member of The Hughston Society, a Diplomate of the American Board of Orthopedic Surgery and a member of the American Academy of Orthopedic Surgery. Dr. Hergenroeder has lectured extensively on a variety of orthopedic topics.
George J. Kellis, M.D.
George J. Kellis, M.D. is a board-certified orthopedic surgeon specializing in spine surgery and general orthopedics. Dr. Kellis is a founding partner of Precision Orthopaedic Specialties, Inc., which was established in 1991. He joined the Spine and Orthopedic Institute at St. Vincent Charity Medical Center in 2015.
A recognized leader in orthopedics, Dr. Kellis is a fellow of both the American Academy of Orthopaedic Surgery and the North American Spine Society. He instructs resident physicians in orthopedics and lectures on advanced techniques in spine surgery.
Dr. Kellis’ professional career has been built upon a strong academic foundation. George Kellis was a summa cum laude graduate of Bethany College. He earned his medical degree from the Ohio State University College of Medicine in 1984, graduating with honors. His internship and residency were served at Case Western Reserve University, University Hospitals of Cleveland. Dr. Kellis was a flight surgeon with Cleveland Metropolitan General Hospital Life Flight between 1985 and 1988. He completed a one-year microvascular research fellowship at Case Western Reserve University and completed a surgical spine fellowship at the Cleveland Spine and Arthritis Center between 1991 and 1992. Dr. Kellis has obtained numerous awards for his achievements in both clinical and laboratory research.
Dr. Kellis treats the complete spectrum of orthopedic conditions using progressive techniques. He performs the full range of spine surgeries, which includes microdiscectomy, spinal fusions with intervertebral cages and pedicle screws, disc replacement, pain pump implantation, spinal cord stimulators and kyphoplasty.
Wissam E. Khoury, D.P.M.
Dr. Khoury is Board Certified in Foot Surgery and Reconstructive Rearfoot/Ankle Surgery. He is a Fellow of the American College of Foot and Ankle Surgeons and a Diplomate of the American Board of Podiatric Surgery. Dr. Khoury holds a degree in podiatric medicine from the Ohio College of Podiatric Medicine and a bachelor's degree in Biology from Cardinal Stritch University in Milwaukee, Wisconsin. He completed his podiatric residency training from St. Vincent Charity Medical Center and was privileged to be trained by the beloved Dr. Gerard V. Yu. Dr. Khoury has co-authored several publications and lectured at local and national seminars. He provides complete medical and surgical foot and ankle care and specializes in reconstructive foot and ankle surgery, foot and ankle trauma, ankle arthroscopy, sports medicine, foot and ankle arthritis, pediatric foot and ankle disorders, diabetic limb salvage, external fixation and wound care.
Matthew E. Levy, MD
Born and raised in Cleveland, Dr. Matthew Levy worked for 14 years as team physician for a number of local sports teams. After graduating from Case Western Reserve University in Cleveland, he completed his internship and residency at Mount Sinai Medical Center. Dr. Levy is also fellowship-trained in Sports Medicine.
Board-certified in Orthopedic Surgery, Dr. Levy is a member of the American Academy of Orthopedic Surgeons, Ohio State Medical Association, American College of Surgeons and Arthroscopy Society of North America. He has written extensively on orthopedic issues and has a special interest in sports medicine. He also has expertise in joint replacement and fracture care.
Audley M. Mackel, M.D.
Dr. Mackel is board-certified in orthopedic surgery and chair of the Division of Orthopedics at St. Vincent Charity Medical Center. He specializes in total joint replacement, arthritis and adult reconstructive orthopedic surgery. He graduated from Meharry Medical College in Nashville, Tennessee and did his internship and residency at Northwestern University in Chicago. He completed a fellowship at Kerlan-Jobe Orthopaedic Clinic in Inglewood, CA.
Robert F. McLain, M.D.
Dr. Robert McLain is a fellowship-trained spine surgeon with 25 years of expertise in complex spine care. Previously, he served 16 years as a Cleveland Clinic staff surgeon and educator with appointments in the Departments of Orthopaedic Surgery and Neurosurgery, Professor of Surgery within the Lerner College of Medicine, and remains Professor of Biomedical Engineering at Cleveland State University. He served as Director of the Cleveland Clinic’s Spine Surgery Fellowship Program, a world-renowned program for advanced training of both Orthopaedic and Neurosurgical Spine Surgeons. Dr. McLain joined St. Vincent Charity in January 2015.
Dr. McLain is a recognized expert in the treatment of degenerative conditions of the neck and back, spine trauma, and instability of the spinal column. He has authored more than 200 peer-reviewed papers and chapters, and serves as an invited speaker for national and international meetings focusing on spinal surgery.
Now fully devoted to clinical care, Dr. McLain’s specialty interests include artificial disc and disc replacement surgery for the cervical and lumbar spine; surgical treatment of degenerative disease of the spine, disc herniation and stenosis, and spinal instability; kyphoplasty; and treatment of neck and arm pain due to degeneration or disc herniation in the cervical spine.
Joel D. Siegal, M.D.
Board-certified in neurosurgery, Dr. Siegal focuses on intracranial surgery, spine surgery, peripheral nerve surgery and surgical pain management. He earned his medical degree from the University of Pennsylvania and completed his internship and residency at the University of Minnesota. Dr. Siegal has written extensively on neurological issues and has a special interest in vertebral body augmentation for the treatment of compression fractures. He is a member of the Congress of Neurological Surgeons, American Association of Neurological Surgeons, North American Spine Society and American Medical Association.
Jeffrey F. Shall, M.D.
Dr. Shall is an orthopedic surgeon specializing in spine surgery and minimally invasive spine surgery. He has performed thousands of surgeries since 1991 and has special training in kyphoplasty, laser spine, total disc replacement, Dynesys Spine Stabilization, minimally invasive spine fusion and spine cord stimulators. Board-certified in orthopedic surgery, he is trained in both the anterior and posterior approach for both cervical and lumbar spine surgery. Dr. Shall graduated from The Ohio State University Medical School and completed his residency training at Mt. Sinai Medical Center. In 1992, he completed a spine surgery fellowship with Dr. John Collils. He is a fellow of the American Academy of Orthopedic Surgeons and a fellow of the North American Spine Society.
Bernard Stulberg, M.D.
Dr. Stulberg joined the Spine and Orthopedic Institute in October 2014 from the Cleveland Clinic Orthopaedic and Rheumatologic Institute. He has extensive experience in orthopedic surgery, including total joint replacement and revision joint surgery. A graduate of the University of Michigan School of Medicine, he completed an internship and residency in general surgery at the University of Chicago Hospital. He also completed a residency and research fellowship in orthopedic surgery at The Hospital for Special Surgery in New York City. Dr. Stulberg completed a fellowship in orthopedic surgery service at Memorial Sloan-Kettering Cancer Center in New York. He graduated from the Professional Fellows Program at Case Western Reserve Weatherhead School of Management. Dr. Stulberg has held numerous academic appointments and has held committee assignments at the local, state, national and international level. He has published and presented extensively on a variety of orthopedic-related topics. He is a member of the American Academy of Orthopaedic Surgeons, American Association of Hip and Knee Surgeons and the Cleveland Academy of Medicine. He is a diplomat of the American Board of Orthopaedic Surgeons and the National Board of Medical Examiners.