Our offices are now open for in-person appointments. To schedule an appointment with one of our brain or spine experts, please call 1-844-NSPC-DOC. We are now In-Network with The Empire Plan (NYSHIP).

Donald Krieff

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

Focus Areas

  • Spinal Cord Injury
  • Traumatic Brain Injury
  • Complex and Minimally Invasive Spinal Surgeries
  • ALIF: Anterior Lumbar Interbody Fusion
  • Anterior Cervical Discectomy
  • Anterior Cervical Discectomy and Fusion
  • AxiaLIF® (Axial Lumbar Interbody Fusion)
  • Burr Hole Drainage
  • Cervical Posterior Foraminotomy
  • Spinal Stenosis
  • Back Pain
  • Degenerative Scoliosis
  • Failed Back Syndrome
  • Herniated Discs
  • Pinched Nerve
  • Sciatica
  • Spina Bifida
  • Spinal Fractures
  • Spinal Instability
  • Spinal Tumor
  • Spondylolisthesis

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.

“Dr. Krieff is AMAZING, with capital letters. He went above and beyond the call of duty and gave me back my hearing when he removed my brain tumor.” Ida DiLorenzo

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 technique 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.”

Neurosurgery Education and Experience

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.

Neurosurgery Honors

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”

Throughout his career he has been involved in training medical students and residents. Dr. Krieff has been a member of the American Osteopathic Board of Surgery.

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 current member of the American Medical Association and the American Osteopathic Association.


Current Affiliations
Our comprehensive and multi-disciplinary programs provide world-class treatment.
View All Treatments Meet the doctors