Dr. Joshua E. Ryan

Christopher Kellner is a Neurosurgery specialist and a Neuroradiologist in New York, New York. Dr. Kellner is rated as an Elite provider by MediFind in the treatment of Apoplexy. His top areas of expertise are Stroke, Subarachnoid Hemorrhage, Subdural Hematoma, Thrombectomy, and Gastrostomy.

"Jamie S. Ullman, MD, FACS, joined Northwell Health in 2013 as director of neurotrauma at the Institute for Neurology and Neurosurgery at North Shore University Hospital. She brings 25 years of specialized expertise in the surgical management of head and spinal cord injuries, as well as acute neurological conditions such as stroke, cerebral hemorrhage, hydrocephalus and brain tumors.A founding member of the Northwell Health Concussion Program, Dr. Ullman leads a team of experts in traumatic brain injury. She also works closely with the neurocritical care team in the Neurosurgery Intensive Care Unit at North Shore University Hospital to deliver comprehensive neurological services to the community.Fully committed to being accessible for her patients, Dr. Ullman is always there to answer questions and address any concerns with kindness and compassion. She takes the time to go over every aspect of care, whether it's reviewing diagnostic films or explaining the thorough details of a procedure.Research is also important to Dr. Ullman. She is actively involved in various neurosurgical clinical trials and studies including intracranial pressure monitoring and minimally invasive removal of blood clots in strokes. Her work has been highlighted in more than 60 medical publications.A recognized leader in her field, Dr. Ullman has received numerous awards from national organizations, including the Distinguished Service Award from the Congress of Neurological Surgeons. She was also nominated for Northwell's President's Award, recognized for her leadership in elevating the neurotrauma program at North Shore University Hospital, the first trauma center in downstate New York to receive level I verification from the American College of Surgeons.Dr. Ullman received her medical training from Robert Wood Johnson Medical School in New Jersey. She completed a residency in neurosurgery and fellowship in neurosurgery critical care at Mount Sinai School of Medicine, and an additional fellowship in neurotrauma at the Shock Trauma Center at the University of Maryland School of Medicine.After completing her training, Dr. Ullman continued to pursue her passion for education. She has held faculty and leadership roles throughout her career, and currently serves as professor of neurosurgery at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell. As a core faculty member of Northwell's neurosurgery residency program, she is committed to training the future leaders of brain surgery.Dr. Ullman currently serves on the New York state trauma and advisory committees, and was the first woman to serve as an officer and vice president of the Congress of Neurological Surgeons. She also previously served as chair of the American Association of Neurological Surgeons and the Congress of Neurological Surgeons Section on Neurotrauma and Critical Care. Dr. Ullman has been recognized as one of Castle Connolly's ""Top Doctors"".". Dr. Ullman is rated as a Distinguished provider by MediFind in the treatment of Apoplexy. Her top areas of expertise are Subdural Hematoma, Delirium, Chronic Subdural Hematoma, Craniectomy, and Gastrostomy.

Charles Matouk is a Neurosurgery specialist and an Interventional Radiologist in New Haven, Connecticut. Dr. Matouk is rated as an Elite provider by MediFind in the treatment of Apoplexy. His top areas of expertise are Stroke, Hydrocephalus, Normal Pressure Hydrocephalus, Thrombectomy, and Stent Placement.