Peter H. Hollis, MD

Mark Eisenberg, MD, joined Northwell Health in 2005 after nine years in private practice. He is now chief of neurosurgery at Long Island Jewish Medical Center, and the founder and director of the Skull Base Center, which is part of the Institute for Neurology and Neurosurgery. The center advances the field through innovative techniques and approaches. After graduating from University of Miami Miller School of Medicine, Dr. Eisenberg completed his residency training in neurosurgery at the Mount Sinai Medical Center in New York. Following residency, he completed a skull base surgery fellowship at the University of Arkansas for Medical Sciences. His area of expertise is neurological disease, with a focus on robotic and minimally invasive approaches to skull base and spinal surgery, as well as management and surgical treatment of degenerative spine disorders. "The types of techniques we use at the Skull Base Center take years to hone and practice, and I enjoy bringing that experience to my patient care, as well as training residents and neurosurgeons around the country, and even around the world," he says. As associate professor of neurosurgery at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Dr. Eisenberg teaches courses in skull base surgery and minimally invasive spinal surgery. For the past several years, he's been recognized as one of Castle Connolly's Top Doctors.Dr. Eisenberg has published research in numerous publications and written a comprehensive textbook, The Cavernous Sinus, which provides surgeons with clear, evidence-based direction on performing successful operative procedures with microsurgical instrumentation. The textbook also covers anatomy, diagnosis and treatment, as well as insights on vascular, traumatic, inflammatory and neuroplastic diseases of the cavernous sinus. In addition to providing that same level of clarity in every patient interaction, Dr. Eisenberg appreciates the high level of collaboration and expertise that sets Northwell apart. "Northwell has become the epicenter for the highest levels of neurosurgical care, especially in the region and possibly in the whole tri-state area," he says. "Our expertise makes it easy to take care of complex patients and complex conditions, because we have great subspecialties that all come together here."

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. Albert Fenoy is the director of functional neurosurgery at Northwell Health. As an experienced, world-renowned neurosurgeon specializing in complex brain and spinal disorders, he acts as the Director of Functional Neurosurgery at Northwell Health. After obtaining his medical degree from Stony Brook School of Medicine, he completed his residency at the University Iowa followed by fellowship training at CHU Grenoble in France. He began his career at The University of Texas Science Center at Houston, where Dr. Fenoy became prominent for innovating the field of functional neurosurgery. Dr. Fenoy is also a fellow of the American Association of Neurological Surgeons and a member of the Congress of Neurological Surgeons. He is committed to providing the highest level of patient care using the latest techniques and technology.Dr. Fenoy is an active researcher at the Feinstein Institute for Medical Research, focusing on the development of new surgical techniques and technologies to improve outcomes for patients with neurological conditions, including deep brain stimulation (DBS) and other forms of neuromodulation. He has utilized this expertise in DBS by performing over 700 cases to date. Dr. Albert Fenoy is also known for his expertise in high intensity focused ultrasound (HIFU), a non-invasive surgical technique that uses focused ultrasound waves to heat and destroy targeted tissue without harming surrounding healthy tissue. In 2023, North Shore University at Northwell Health equipped Dr. Fenoy with this technology in order to bring the highest quality of care to the community.Dr. Fenoy has been involved in several clinical trials in DBS and has been exploring the use of HIFU for the treatment of a variety of movement disorders such as essential tremor and Parkinson's disease. Through his work with HIFU, Dr. Fenoy provides patients with innovative, non-invasive treatments that offer fewer complications and a faster recovery time. He has also been actively involved in educating other physicians and surgeons about the use of DBS and HIFU in the field of neurosurgery.Dr. Fenoy is known for his compassionate approach to patient care and his ability to communicate complex medical information in a clear and understandable way. He works closely with each patient to develop a personalized treatment plan that addresses their unique needs and goals.Using the latest techniques and technology to diagnose and treat a wide range of neurological conditions, including Parkinson's disease, essential tremor, dystonia, treatment resistant depression, and chronic pain, he is also actively involved in research to improve the effectiveness of surgical treatments for these conditions.