Dr. John H. Presper

Dr. Schirmer is board certified in neurological surgery and is fellowship trained in interventional neuroradiology and endovascular neurosurgery. He holds subspecialty certificates for neuroendovascular surgery and neurocritical care. His clinical interests include care and management of patients with acute ischemic and hemorrhagic stroke; intracranial aneurysms and arteriovenous malformations; carotid, vertebral and intracranial atherosclerosis and stenosis; and spinal vascular malformations. He specializes in endovascular flow diversion techniques, skull base surgeries and minimally invasive craniotomy techniques. He earned his medical degree at the Medizinische Fakultät at Ludwig-Maximilians-Universität München in Germany. Dr. Schirmer completed his residency and fellowships at Tufts University, New England Medical Center and Harvard Medical School Teaching Hospitals in Boston.|Video: more from Dr. Clemens Schirmer, M.D., PhD. Dr. Schirmer is highly rated in 13 conditions, according to our data. His clinical expertise encompasses Brain Aneurysm, Stroke, Subarachnoid Hemorrhage, Thrombectomy, and Stent Placement. Dr. Schirmer is currently accepting new patients.

Dr. Slotkin is board certified in neurosurgery by the American Board of Neurological Surgery. His clinical interests include care for back and neck pain, as well as sports-related spine injuries, and he has particular interests in consumerism and the digital transformation of healthcare. His research interests include post spinal cord injury regeneration. Dr. Slotkin has expertise in spine outcomes, caring for degenerative and congenital spine conditions, spinal tumors and spine/spinal cord injury. He earned his medical degree from the University of Maryland, and completed his residency at Harvard University, Brigham and Women's Hospital. He completed his fellowship in spine surgery at New England Baptist Hospital. Dr. Slotkin is director of Spinal Surgery for Geisinger and also serves as associate chief medical informatics officer. Dr. Slotkin is highly rated in 5 conditions, according to our data. His clinical expertise encompasses Spondylolisthesis, Delirium, Invertebral Disc Disease, Laminectomy, and Spinal Fusion. Dr. Slotkin is currently accepting new patients.

Christoph Griessenauer is a Neurosurgery provider practicing medicine in Wilkes Barre, Pennsylvania. Dr. Griessenauer is highly rated in 18 conditions, according to our data. His clinical expertise encompasses Brain Aneurysm, Stroke, Subarachnoid Hemorrhage, Thrombectomy, and Stent Placement.