Stroke Doctor on Long Island

Stroke Treatment With Dr. Symeon Missios, MD, FAANS

As a board-certified neurosurgeon, Dr. Symeon Missios is renowned for providing expert stroke care at Long Island’s only Joint Commission-certified Comprehensive Stroke Center, located at Good Samaritan University Hospital. Additional locations on Long Island include St. Catherine of Siena Medical Building and Long Island Brain & Spine.

Academic Excellence & Subspecialty Training

Dr. Missios graduated Magna Cum Laude from Duquesne University and earned his medical degree from Dartmouth Medical School, where he received the prestigious Dean’s Medal Award for the highest academic achievement in his class.

Cleveland Clinic Fellowship

Neurosurgical Oncology and Stereotactic Radiosurgery subspecialty training.

Thomas Jefferson University

Fellowship in Endovascular Neurosurgery and Neurovascular Critical Care.

His clinical expertise involves advanced intraoperative neuronavigation techniques such as brain mapping and electrocorticography.

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Affiliated with

The only Joint Commission Certified Comprehensive Stroke Center on Long Island’s South Shore.

Types of Strokes

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Brain Surgery

Ischemic Stroke

For ischemic stroke, where a blood vessel is blocked, time is critical. Dr. Missios employs:

  • Thrombolytic medications (clot-dissolving drugs)
  • Mechanical thrombectomy — a minimally invasive procedure using guided wires and catheters to reopen blocked vessels and restore critical blood flow to the brain
  • Mechanical thrombectomy
  • Carotid endarterectomy
  • Carotid angioplasty and stenting
  • Decompressive craniectomy
Brain Surgery

Hemorrhagic & Vascular Stroke

For strokes caused by bleeding in the brain, Dr. Missios’s expertise spans both open and minimally invasive endovascular neurosurgery techniques, precisely addressing hemorrhages and brain aneurysms.

  • Aneurysm Clipping
  • Endovascular Coiling
  • Hematoma Evacuation
  • AVM Treatment
  • External Ventricular Drain (EVD)

What Stroke Treatment Aims to Do

Stroke treatment focuses on restoring healthy blood flow to the brain, stopping or preventing bleeding, and limiting damage to brain tissue. The faster treatment begins, the more brain function can often be preserved. Beyond the immediate emergency, the goals extend to relieving pressure inside the skull, preventing a second stroke, and supporting the brain’s recovery so patients can regain as much independence as possible.

  • Before SurgeryThe neurosurgical team works to pinpoint the type and location of the stroke using imaging such as CT and MRI scans.
  • During SurgeryThe surgical team works to restore blood flow, stop bleeding, or relieve pressure on the brain, depending on the type of stroke.
  • RecoveryRecovery begins immediately after treatment, with close monitoring in the hospital to watch for complications and support healing.

Expert Stroke & Brain Aneurysm Treatment

Dr. Missios brings specialized training in endovascular neurosurgery, enabling minimally invasive management of stroke and brain aneurysms. His expertise includes mechanical thrombectomy for ischemic stroke, clot-dissolving medications, and advanced neuro-intervention techniques.

  • Mechanical thrombectomyMinimally invasive removal of a clot from a blocked brain artery using a catheter, typically within hours of symptom onset.
  • Carotid endarterectomySurgical removal of plaque buildup from the carotid artery to restore blood flow and reduce future stroke risk.
  • Carotid angioplasty and stentingA catheter-based procedure to open a narrowed carotid artery and hold it open with a small stent.
  • Decompressive craniectomyRemoval of part of the skull to relieve dangerous brain swelling after a large stroke.

Stroke FAQs

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What is a Comprehensive Stroke Center and where can I find one?

A Comprehensive Stroke Center on is a hospital certified by the Joint Commission to provide the highest level of stroke care, including advanced treatment for ischemic stroke, hemorrhagic stroke, and brain aneurysms. Dr. Symeon Missios, MD has locations in West Islip and Smithtown.

When should I see a stroke doctor?

You should seek immediate care if you experience sudden weakness, numbness, vision loss, difficulty speaking, or severe headache. Our stroke specialist in Suffolk County and across Long Island provides urgent treatment and rehabilitation.

What treatments does Dr. Symeon Missios offer for stroke?

As a board-certified neurosurgeon, Dr. Missios specializes in minimally invasive stroke treatments, mechanical thrombectomy, clot-dissolving medications, and surgical care for brain aneurysms.

Where are your stroke treatment locations on Long Island?

We offer inpatient care at Good Samaritan University Hospital in West Islip and outpatient locations in Babylon, West Islip, Smithtown, and Manhasset, making stroke care accessible across Long Island.

Can a stroke be treated without surgery?

Yes. Many strokes are treated with minimally invasive procedures, medications, and neurointervention techniques. Surgery is reserved for complex cases such as brain aneurysms or severe bleeding.

How do I make an appointment with Dr. Missios?

Patients can schedule an appointment at one of our Long Island locations by calling (631) 983-7072 or through our website. Immediate stroke care should always begin with dialing 911.

Schedule a Spine Surgery Consultation on Long Island

If you’re looking to prioritize the health of your spine and seek the expertise of a trusted professional, don’t hesitate to reach out to us. Contact our team today to schedule a consultation with a top-tier Spine Surgeon in West Islip NY. Dr. Symeon Missios, a specialist in spine care, is committed to helping you achieve a pain-free, active, and vibrant life by ensuring the vitality and well-being of your spine. Contact us today to learn more!