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.
Small Brain Tumors, Big Decisions: When Watching Is Wiser Than Treating
By Symeon Missios, MD — Long Island Brain &...
The Spine Surgery You Probably Don’t Need: A Neurosurgeon’s Honest Guide on When to Wait
By Symeon Missios, MD — Long Island Brain &...
Subdural Hematoma in Older Adults
A “Slow” Brain Bleed (A Neurosurgeon’s Friendly Guide) If you spend time in any neurosurgery clinic—or with a loved one in their 60s, 70s, or beyond—you’ll hear the phrase “subdural hematoma” more often than you’d expect. It sounds dramatic, and it can be. But it’s...
When To See A Surgeon For Back Pain
Back Pain: When to See a Neurosurgeon vs. a Chiropractor or Physical Therapist Back pain has a knack for striking at the most inconvenient moments—right before a long-awaited vacation, after hoisting that "not-so-heavy" box during a move, or the morning after an...
Back Pain vs. Pinched Nerve
How to Tell the Difference (A Neurosurgeon’s Friendly Guide) Most of us meet back pain the way we meet a rainy Monday—uninvited, inconvenient, and somehow perfectly timed with the rest of life. For many people it’s a sore, stiff lower back after lifting a suitcase or...
Concussions and Brain Injuries: What You Need to Know About Diagnosis, Treatment, and Recovery
Imagine you’re watching your kid’s soccer game, and they take a hard hit to the head. They seem okay but complain of a headache later. Or maybe you slip on ice, hit your head, and feel foggy for days. These could be signs of a concussion or even a traumatic brain...
Our Services
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Our Office Hours
24 hour on call service
Monday
8:30am – 5pm
Tuesday
8:30am – 5pm
Wednesday
8:30am – 5pm
Thursday
8:30am – 5pm
Friday
8:30am – 3:30pm
Sat + Sun
closed