Dr. Christoph J. Griessenauer

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 rated as a Distinguished provider by MediFind in the treatment of Stroke. His top areas of expertise are Brain Aneurysm, Stroke, Subarachnoid Hemorrhage, Thrombectomy, and Stent Placement.

Dr. Goren specializes in cerebrovascular and endovascular neurosurgery. His clinical interests include stroke and its surgical treatment, the treatment of idiopathic intracranial hypertension, treatment of brain aneurysms, arteriovenous malformations and fistulas, cavernous malformations, moyamoya disease, carotid stenosis, trigeminal neuralgia and hemifacial spasm. He earned his medical degree from Semmelweis University, completed his residency at the Sheba Medical Center in Israel and completed his fellowship in cerebrovascular and endovascular neurosurgery at the Swedish Neuroscience Institute in Seattle. He is an associate program director for the Geisinger neurosurgical residency program and a clinical assistant professor at the Geisinger Commonwealth School of Medicine. Dr. Goren speaks English and Hebrew. Dr. Goren is rated as a Distinguished provider by MediFind in the treatment of Stroke. His top areas of expertise are Stroke, Brain Aneurysm, Subarachnoid Hemorrhage, Thrombectomy, and Stent Placement.

Hugh O'donnell is a Neurosurgery provider in Fountain Hill, Pennsylvania. Dr. O'donnell is rated as an Advanced provider by MediFind in the treatment of Stroke. His top areas of expertise are Stroke, Delirium, Subarachnoid Hemorrhage, and Chronic Subdural Hematoma.