Donald Krieff D.O., F.A.C.O.S.

About Dr. Krieff

Donald S. Krieff, D.O., F.A.C.O.S., is a board certified neurosurgeon at Neurological Surgery P.C. based in West Islip, NY with nearly 20 years of experience. The F.A.C.O.S. designation after Dr. Krieff’s name signifies that he is a Fellow of the American College of Osteopathic Surgeons and meets their stringent standards in the areas of education and training, competence as a surgeon, professional credentials and ethical conduct.

The Long Island neurosurgeon treats adult and pediatric patients and is proficient in both complex cranial and spinal surgery. His career-long experience using microsurgical techniques continues to lead to excellent patient outcomes.

Dr. Krieff’s Long Island neurosurgery group sees a high volume of patients. As a result, he and his fellow neurosurgeons have extensive experience treating both common and rare neurological diseases with the latest minimally invasive techniques.

A highly acclaimed neurosurgeon, Dr. Krieff is down-to-earth with his patients and has a common-sense approach to medical problems. “People with back and neck problems have often been in pain for a long time and are seeking relief,” he explains. “We’re not looking to operate on patients just because we can. We want patients to get better and if that simply means nonsurgical management, that’s great. Surgery is reserved for the cases which have failed extensive conservative care.”

Dr. Donald S. Krieff’s current appointments include:

Clinical Adjunct Professor in Neurosurgery at New York College of Osteopathic Medicine
Residency Evaluation and Standards Committee member for the American College of Osteopathic Surgeons
Neurological Surgery Board Examiner
Clinical Instructor in Neurosurgery, Nova Southeastern University College of Osteopathic Medicine.

Dr. Krieff has lectured at surgical and pediatric departments as well as the Nassau County Paramedics on many topics including:

“The Role of the Neurosurgeon on the Stroke Team”
“Contemporary Management of Head Injury”
“Contemporary Management of Traumatic Spinal Injuries”
“Diagnosis and Treatment of Brain Abscesses”
“Current Management of Hydrocephalus”
“When to Call a Neurosurgeon”

He is a Fellow in the American College of Osteopathic Surgeons and a current member of the American Medical Association and the American Osteopathic Association.

Education & Training

Dr. Krieff received his undergraduate degree in Biological Science from Florida International University and obtained his medical degree from Nova Southeastern University of the Health Sciences. He served his internship at Palmetto General Hospital and then completed his neurological surgery residency at Long Island Jewish Medical Center. In his last year of training, Dr. Krieff served as Neurological Surgery Chief Resident at Long Island Jewish Medical Center and North Shore University Hospital-Manhasset.

Upon completion of his training in 1998, Dr. Krieff began his neurosurgery practice in Fort Lauderdale, FL. He and his partner were the primary neurosurgeons at Broward General Medical Center. During the subsequent five years, Dr. Krieff developed expertise in treating traumatic brain injury as well as complex spinal injuries requiring stabilization and instrumentation. He served as the Chief of Neurosurgery at Broward General from 2000 until his move back to Long Island in 2003. After relocating to Long Island, Dr. Krieff was appointed Chief of Neurosurgery at Nassau University Medical Center, Nassau County’s busiest Level I trauma center.

Patient Testimonials

powered by Birdeye

Honors & Awards

Dr. Krieff has received several honors including:

First-place ranking in achievements with the Annual Clinical Assembly of Osteopathic Specialists and American College of Osteopathic Surgeons
Recipient of the “Annual Resident Achievement Award”
Recipient of the “Robert C. Erwin Literary Achievement Award”


  • Hospital Affiliations

    NYU Winthrop Hospital259 First Street, Mineola, NY 11501
    Mount Sinai South Nassau HospitalOne Healthy Way, Oceanside, NY 11572
    Mercy Medical Center1000 North Village Ave, Rockville Centre, NY 11571
    North Shore University Hospital300 Community Drive, Manhasset, NY 11030
    Plainview Hospital888 Old Country Road, Plainview, NY 11803
    Long Island Jewish Valley Stream900 Franklin Avenue, Valley Stream, NY 11580
    Glen Cove Hospital101 St Andrews Lane, Glen Cove, NY 11542
    Syosset Hospital221 Jericho Turnpike, Syosset, NY 11791
    Long Island Jewish Medical Center270-05 76th Avenue, New Hyde Park, NY 11040
    St. Francis Hospital100 Port Washington Blvd, Roslyn, NY 11576
    Good Samaritan Hospital Medical Center1000 Montauk Highway, West Islip, NY 11795