Brains of New York | Our Doctors
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Our Doctors

our doctors
John M. Abrahams, MD

John M. Abrahams, MD

Dr. John Abrahams treats disorders of the brain and spine as Chief of Neurosurgery at Northern Westchester Hospital. He is the author of numerous patents, has authored over 30 publications in peer-reviewed journals and textbooks, and given lectures at many national and local meetings.  In addition to Chief at Northern Westchester Hospital, he is also the hospital’s co-director of the spine section of the Orthopedic and Spine Institute. In 2009, he founded and now runs the Westchester Neuroscience Research Foundation.  The foundation is currently funding a project in conjunction with the Department of Pathology at New York Medical College studying the genomic profile of malignant brain tumors.


Dr. Abrahams has a background in biomedical engineering and been quite active as a biomedical entrepreneur, and has founded numerous biomedical companies including EndoMedix, AsiloMedix, CranioMedix, Connectiphi, and Osteomedix. Dr. Abrahams’ most recent project is a surgical robotic device for brain surgery.


Dr. Abrahams was named President of Brain & Spine Surgeons of New York in 2015, and was recently named one of the “Top 10 Spine, Orthopedic Surgeon Tech Entrepreneurs to Know” by Becker’s Spine Review. To read the article, click here.


To view Dr. Abrahams’ full bio, click here.

Kaushik Das, MD

Dr. Kaushik Das is an Associate Professor of Neurosurgery at New York Medical College and Director of Neurosurgery Spine Section at Westchester Medical Center. In 2003, he became board certified by the American Board of Neurological Surgeons.


Dr. Das completed his undergraduate degree in biochemistry at the State University of New York at Stony Brook in 1989. He went on to attend medical school at the State University of New York in Brooklyn (Downstate) where he graduated cum laude in 1993 and was a member of AOA honor society. He then trained as a general surgery intern and neurosurgery resident at New York Medical College in Valhalla. He then completed a Spine Fellowship at the Barrow Neurologic Institute in Phoenix, Arizona. In 2000 he returned to join the faculty at New York Medical College where he now holds a faculty appointment as an Associate Professor.


Dr. Das is an active member of numerous professional organizations, including CNS, AANS, and the AANS/CNS Joint Section on Disorders of the Spine.


To view the resume of Dr. Das, click here.

Kaushik Das, MD
Alain C.J. de Lotbiniére, MD

Alain C. J. de Lotbinière, M.D., C.M., F.A.C.S., F.R.C.S.C.

Dr. de Lotbinière joined BSSNY as a principal in 2006, after spending 17 years at Yale University School of Medicine (YSM), where he was director of stereotactic and functional neurosurgery, director of pituitary surgery, and medical director of Gamma Knife surgery.  He was an associate professor of neurology at YSM, where he created a program for stereotactic and functional neurosurgery as well as radiosurgery.


With a national reputation for properly diagnosing and surgically treating nerve disorders such as trigeminal neuralgia, Dr. de Lotbinière brings peace of mind to patients who have long searched for answers before coming to him.


Dr. de Lotbinière earned his undergraduate degree from Columbia University and completed his medical school and subsequent training at McGill University School of Medicine in Montreal, Quebec. He completed a fellowship at Addenbrooke’s Hospital in Cambridge, England. He is certified in neurosurgery by the Royal College of Physicians and Surgeons of Canada and by the American Board of Neurological Surgery. In addition, he is the medical director of the Cancer Treatment and Wellness Center at Northern Westchester Hospital (NWH) and a past president of the International Gamma Knife Society.


To view Dr. de Lotbinière’s full bio, click here.

Virany Hillard, MD

Virany Huynh Hillard, M.D.

Dr. Virany Hillard received her B.A. in Biological Sciences from Harvard University in 1995 and her M.D. cum laude from New York University in New York, NY in 1999. She completed an internship in general surgery at the New York Medical College Westchester Medical Center in 2000 followed by a neurosurgery residency at the same institution from 2000-2005 under the chairmanship of Drs. William Couldwell and Raj Murali.


From 2002-2003 Dr. Hillard served as a research fellow under Richard Zeman, Ph.D. and Joseph Etlinger, Ph.D. in the Spinal Cord Injury Laboratory, Department of Cell Biology and Anatomy at New York Medical College. She received the prestigious Synthes Award for Research on Spinal Cord and Spinal Column Injury in 2004. Dr. Hillard completed a spine fellowship in the Department of Neurological and Orthopedic Surgery at the University of Utah in 2005-2006 under the guidance of Ronald Apfelbaum, M.D. and Darrel Brodke, M.D.


Additionally, she was the Attending Physician/ Assistant Professor Department of Neurological Surgery at the University of Washington School of Medicine, Seattle 2006-2011, and is currently the Attending Physician /Associate Clinical Professor Department of Neurosurgery at the Westchester Medical College/Westchester Medical Center. Dr. Hillard is the member of numerous professional organizations, including the American Association of Neurological Surgeons and the American Medical Association.


To view Dr. Hillard’s full bio, click here.

Ezriel E. Kornel, M.D., F.A.C.S.

A principal of Brain & Spine Surgeons of New York since 1990, Dr. Kornel is at the forefront of minimally invasive neurosurgery (MIS). MIS is used to minimize the trauma of surgery and increase the speed of recovery. Stemming from his interest in microsurgery, Dr. Kornel has become an expert in minimally invasive endoscopic surgery of the spine as well as minimally invasive approaches in the surgical treatment of brain tumors. Because of his particular interest in cervical spine surgery, he is one of the first neurosurgeons in the New York metropolitan area to replace damaged cervical discs with the newly introduced artificial discs.


Dr. Kornel was trained in Stockholm in the use of the Gamma Knife and, when indicated, utilizes this stereotactic radiosurgical technique for the treatment of brain tumors as well as for the treatment of trigeminal neuralgia. He is the director of the Institute for Neurosciences at Northern Westchester Hospital in Mount Kisco, NY and is affiliated with many of the leading hospitals in the area.


Dr. Kornel gained his initial expertise during his neurosurgical residency at the George Washington University Medical Center under the tutelage of Hugo Rizzoli, M.D., at the time one of the most renowned and respected neurosurgeons in the world. Dr. Kornel also has numerous mentions in the biography of James Brady, press secretary to President Reagan, because of his involvement in Mr. Brady’s care after his tragic gunshot injury. Highly personalized attention combined with the utmost dedication to the ultimate well-being of his patients is what motivates Dr. Kornel in his efforts to continue expanding and honing his expertise.


To view Dr. Kornel’s full bio, click here.

Ezriel E. Kornel, MD
Avinash Mohan, MD

Avinash Mohan, MD

Dr. Avinash Mohan is a pediatric neurosurgeon with board certifications in both neurological surgery and pediatric neurological surgery.    


He achieved his undergraduate degree at Johns Hopkins University and received his medical degree from Case Western Reserve University School of Medicine. Dr. Mohan performed his residency at New York Medial College where he was Chief Resident, and Children’s Memorial Hospital in Chicago.


Dr. Mohan has been an author on numerous publications and presentations, as well as the recipient of multiple honors and awards. He is affiliated with several hospitals in the area, including Coney Island Hospital and Westchester Medical Center.


To read Dr. Mohan’s full bio, click here.

Craig M. Shannon, MD

Dr. Craig Shannon was born in Manhattan, New York but grew up in the small town of Zanesville, Ohio. He is the son of a private practice Neurosurgeon and his mother is a registered nurse. He has two sisters, a twin sister, and a younger sister. He attended college at Miami University in Oxford Ohio and graduated in 2002 with a Bachelor of Arts. He then attended the University of Toledo College of Medicine and graduated with his medical degree in 2007.


Dr. Shannon began his training in Neurosurgery in 2007 at the Westchester Medical Center/New York Medical College. During his training he was the Chief Resident at St. Vincent’s Medical Center in Manhattan, completed an Infolded spine fellowship at Westchester Medical Center, and completed a Chief Resident year at Westchester Medical Center. He graduated from his residency program in June of 2016 and joined the BSSNY Neurosurgery group. He is interested in all aspects of Neurosurgery which include Cranial Neurosurgery, Trauma, and Spine surgery.


To view Dr. Shannon’s full bio, click here.

Craig Shannon, MD
Michael E. Tobias, MD

Michael E. Tobias, MD

Dr. Michael Tobias is a board-certified neurosurgeon specializing in pediatric neurosurgery. In addition, he is Assistant Professor of Neurosurgery and Pediatrics at New York Medical College, and Co-Chief of Pediatric Neurosurgery at Maria Fareri Children’s Hospital in Valhalla, New York.


Dr. Tobias received his medical degree from Brown University School of Medicine, graduating with honors in neurosurgery and pediatric neurosurgery. He performed his internship and residency at Albert Einstein College of Medicine. While Chief Resident there, Dr. Tobias helped establish a new educational curriculum for resident training in pediatric neurosurgery at Montefiore Hospital.


He is a sought-after presenter and is the author and co-author of numerous research papers. In his spare time, Dr. Tobias enjoys basketball, sailing, and playing the harmonica.


To read Dr. Tobias’ full bio, click here.