Dr. Christopher L. Cummings

Dr. Friedenberg is a neurologist board certified in neurology, neurophysiology and electromyography by the American Board of Psychiatry and Neurology. His clinical interests include neuromuscular disease (including ALS and muscular dystrophy), electromyography, general neurology and neurologic education. He earned his medical degree from Temple University, and completed his residency and fellowship at Mayo Clinic, Rochester, MN. Dr. Friedenberg is rated as a Distinguished provider by MediFind in the treatment of Hemiplegia. His top areas of expertise are Myasthenia Gravis, Chronic Polyradiculoneuritis, Miller-Fisher Syndrome, and Guillain-Barre Syndrome.

Dr. Mateer is a neurologist board certified by the American Board of Psychiatry and Neurology. He is also certified in electrodiagnostic medicine. He earned his medical degree from The Pennsylvania State University and completed his residency at West Virginia University Hospitals. Dr. Mateer is rated as an Advanced provider by MediFind in the treatment of Hemiplegia. His top areas of expertise are Seizures, Transient Ischemic Attack (TIA), Post-Traumatic Epilepsy, and Dravet Syndrome.

David Ermak, DO, is a board-certified neurologist specializing in vascular neurology. He has a clinical interest in acute stroke care. He is a hospital-based physician who sees patients in the emergency room and inpatient units. Dr. Ermak treats a range of neurological conditions, including stroke, multiple sclerosis, brain aneurysms, carotid artery disease and epilepsy.|Dr. Ermak earned his medical degree from the Philadelphia College of Osteopathic Medicine. He completed his residency and fellowship at the Milton S. Hershey Medical Center in Hershey. Dr. Ermak is rated as an Advanced provider by MediFind in the treatment of Hemiplegia. His top areas of expertise are Moyamoya Disease, Stroke, Dysarthria, Thrombectomy, and Gastrostomy.