Board-Certified Neurosurgeon in West Islip & Smithtown, NY —
Brain Tumors, Spine Surgery & Stereotactic Radiosurgery
Exceptional Brain & Spine Care
We are committed to treating surgical conditions of the brain and spine with state of the art medical expertise, technology, sensitivity and care for the individual and their families.
Brain Conditions
Neurosurgeons treat a number of brain conditions that may require surgical intervention, such as brain tumors, bleeding, hydrocephalus, aneurysms or stroke.
Spine Conditions
While the majority of cases of neck and back pain do not require surgical intervention, a number of patients can benefit from surgical procedures that can alleviate neck, arm, back or leg pain.
Stereotactic Radiosurgery
A minimally invasive technique for delivering high dose radiation in a single or few fractions without delivering significant radiation to healthy normal brain tissue.
We Speak English, Spanish & Greek
We take Insurance
Cutting Edge Surgery
100% Privacy & Comfort
Three Long Island Locations
Latest News from Dr. Missios’ Office
Whether it is our latest blog post, published paper or presentation, here’s where you find it: our Blog.
Tractography in Neurosurgery: Precision Mapping for Brain Tumor Surgery
Navigating the Brain with Precision Consider the...
Brain-Computer Interfaces: The Future Is Thinking Out Loud!
Welcome to the Brain Revolution! Picture this:...
Cervical Radiculopathy
Cervical radiculopathy is a condition that occurs when a nerve in the neck is compressed or pinched, resulting in pain, weakness, and numbness that radiates down the arm. This condition can be caused by a variety of factors, including herniated discs, bone spurs, or...
Lumbar Spinal Stenosis
Lumbar spinal stenosis is a common condition that affects the spinal canal in the lower back. It occurs when the space around the spinal cord and nerves narrows, putting pressure on the spinal cord and causing symptoms such as pain, numbness, and weakness. In this...
Stroke the Silent Killer :: BRAIN STORM with Symeon Missios, MD :: Episode 106
Strokes are so common almost everyone's family has been touched by them. But do you have questions about Stroke that you'd love to ask a Neurosurgeon? Well, here's your chance - Neurosurgeon Symeon Missios, MD, FAANS will be here to explain what causes a Stroke, what...
BRAIN STORM with Symeon Missios, MD :: Ep. 105 :: Sciatica
Have Questions about Sciatica? How would you like to ask a Neurosurgeon? Neurosurgeon Dr. Symeon Missios, MD, FAANS and Ryan O'neil Williams, Local Small Biz Marketing Consultant, delve into the mysteries of the brain and spine in episode 5, all about Sciatica....


