From Common To Complex Spine Disorders, Our Doctors Will Provide Expert Care.
Our multidisciplinary team includes neurosurgical and orthopedic surgeons, neurologists, pain management specialists, radiologists, physical and occupational therapists, highly advanced in surgical and non-surgical treatment options. Together, they work to create a customized care plan for each unique spine problem.
Start the Path To Recovery

James McKenzie, MD
Orthopedic Surgery
Redeemer Health
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Dr. James McKenzie is a board-certified, fellowship-trained Orthopaedic Spine Surgeon. Dr. McKenize is a graduate of Sidney Kimmel Medical College at Thomas Jefferson University Hospital in Philadelphia, where he also completed his orthopedic surgery residency. He completed a one-year fellowship in Orthopedic Spine Surgery at Emory University in Atlanta, Georgia. Dr. McKenzie is trained in the management of cervical, thoracic, and lumbar spine degenerative, deformity, traumatic, and pathologic disease. His research efforts focus on improving patient access and outcomes through evidence-based data. Dr. McKenzie grew up in Drexel Hill, Delaware County and lives in Haverford with his wife, Laura, and their two children, Tommy and Margot.

Atom Sarkar, MD, PhD, FAANS
Neurosurgeon
Global Neurosciences Institute
Dr. Atom Sarkar is board-certified by the American Board of Neurological Surgery. Dr Sarkar is well published in the field of functional neurosurgery and lectures globally. He is a world leader in olfactory and gustatory function as well being co-director of the country’s only speech tremor center. He specializes in functional neurosurgery and spine surgery, subspecializing in movement disorders and seizure surgery. His clinical interests include functional neurosurgery (deep brain stimulation and epilepsy surgeries).
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Michael Karsy, MD, PhD
Neurosurgeon
Global Neurosciences Institute
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Dr. Karsy is a skull base neurosurgeon who treats tumor and vascular pathologies through minimally-invasive endoscopic and traditional, open microsurgical approaches. He works with a large multi-disciplinary team that consists of neuroradiologists, neuropathologists, neuroophthalmologists, neuroendocrinologists, and specialized otolaryngology (ENT) cancer surgeons to ensure the best treatment outcomes. Dr. Karsy has experience with radiosurgery in a variety of complex cranial pathologies. His research interests are in improving health care outcomes, novel surgical approaches, and better molecular characterization of tumors.
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Scott Strenger, MD, FACS, FAANS, CPE
Neurosurgeon
Global Neurosciences Institute
Dr. Strenger provides general brain and spine neurosurgical services. He specializes in microsurgical and minimally invasive techniques for cerebral and spinal disorders with an emphasis on spinal surgery. Dr. Strenger is certified by the American Board of Neurological Surgery and has been awarded Fellowship status in the American College of Surgeons and American Association of Neurological Surgeons. Dr. Strenger is currently Assistant Professor, Neurosurgery, at the Drexel University College of Medicine.