Brain
Brain tumors, Vascular brain lesions, Pituitary tumors, Schwannoma / acoustic neuroma.
Explore conditionsMark Hornyak, MD
Board Certified Neurosurgeon
A refined neurosurgical destination for brain, skull base, and spine disorders, combining careful diagnosis, advanced operating room technology, and clear treatment planning.
Board Certified
Brain & Spine
Skull Base Fellowship
BrainTumors, vascular lesions, Chiari, hydrocephalus
SpineStenosis, disc disease, tumors, fractures, deformity
TechnologyNavigation, fluorescence, minimally invasive spine techniques
General NeurosurgeryBrain and spine disorders
Advanced VisualizationMicrosurgery and image-guided workflows
Two Connecticut LocationsNorwich and Mystic
About
General neurosurgery care for brain and spine disorders.
Dr. Hornyak evaluates and treats a broad range of cranial, skull base, and spinal conditions. His practice emphasizes accurate diagnosis, careful review of imaging, and treatment recommendations matched to each patient's anatomy, symptoms, and goals.
Conditions
Focused care across the nervous system
Spine
Spinal stenosis, Disc herniation, Degenerative disc disease, Spondylolisthesis.
Explore conditionsPeripheral / Nerve / Pain
Nerve compression syndromes, Pain from spine degeneration, Tumor-related neurologic symptoms.
Explore conditionsProcedures
Surgical options when they are appropriate
Cranial Procedures
- Craniotomy for brain tumor, meningioma, or hematoma
- Microvascular decompression
- VP shunt placement
- Chiari decompression
- Craniofacial reconstruction / cranioplasty
Spine Procedures
- Decompressive laminectomy
- Microdiscectomy
- Artificial disc replacement / arthroplasty
- Spinal tumor resection
- Spinal fusion
Operating Room & Technology
Contemporary tools for complex anatomy.
Selected cases may use advanced visualization, navigation, and imaging tools to support planning and surgical precision.
Inside the Modern Operating RoomImage-guided surgeryNavigation tools help correlate surgical anatomy with preoperative and intraoperative imaging.
Intraoperative imagingModern imaging workflows support surgical planning and decision-making in selected cases.
MicrosurgeryMicroscope-based techniques are used when delicate neural or vascular structures require fine visualization.
Fluorescence-guided tumor resectionAdjunct visualization may help identify tumor tissue in appropriate cases.
Minimally invasive spine surgerySelected spine procedures may use smaller corridors and focused decompression or stabilization.
Featured Case
Spine
Spondylolisthesis and Lumbar Stenosis
66 yo woman presents with leg greater than back pain Greater than 1 year duration Pain radiates down back of legs Numbness and tingling in calves No weakness, but reports falling Worsens with walking, better with rest Has had injections – limited benefit Has tried PT Ibuprofen helps Smokes ½ ppd; cutting down
View CaseCase examples are educational, de-identified, and not medical advice. Individual care decisions require evaluation by a qualified clinician.
Patient Feedback
Calm, clear, professional care
Dr. Hornyak explained the imaging and treatment plan clearly and calmly.
The visit felt thorough, professional, and reassuring from start to finish.
I appreciated the direct communication and careful review of my options.
Team
Neurosurgeon
MH
Mark Hornyak, MD
Board Certified Neurosurgeon specializing in general neurosurgery for brain and spine disorders.
Contact
Schedule an appointment
Call the office for appointments, referrals, and location details.
860-889-9035
Fax: 860-886-4644
One Towne Park Plaza, Norwich, CT 06360
100 Perkins Farm Road, Suite 300, Mystic, CT 06305