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Hornyak, Mark John, MD





Providing the best care to our patients and their companions requires communicating in a way everyone understands. Interpreter services are available 24 hours a day, 7 days a week, 365 days a year. All spoken languages are available, as well as American Sign Language (AS/L).

Accepting New Patients


Spine Surgery

Areas of Expertise
Anterior Cervical Discectomy, Anterior Cervical Fusion, Back Surgery, Brain Surgery, Brain Tumors, Cervical Disc Arthroplasty, Degenerative Spinal Disorders, Gliomas, Hydrocephalus, Kyphoplasty, Lumbar Spine Decompression, Lumboperitoneal Shunt, Meningiomas, Metastatic Tumors, Microvascular Decompression, Minimally Invasive Spine Surgery, Peripheral Nerve Disorders, Pituitary Tumors, Schwannomas, Spinal Fusions, Sterotactic Radiosurgery, Thoracic Spine Decompression, Trigeminal Neuralgia


University of Utah

New York Medical College

Medical School
University of Maryland School of Medicine

New York Medical College

Professional Organizations

  • American Association of Neurological Surgeons
  • Congress of Neurological Surgeons
  • North American Skull Base Society
  • Pituitary Network
  • TNA The Facial Pain Association


Verified Patient Reviews

5 out of 5 stars

*Dr. Hornyak explained all treatments and was very clear about answering all my concerns.

5 out of 5 stars

Excellent listening & commenting by the provider. Showed great patience, & gave excellent explanations.

5 out of 5 stars

Professional & courteous, concerned and interested. Very impressive.

5 out of 5 stars

*Dr. Hornyak took care to do research in my files before _____ visit. That should be expected but is seldom the case.

5 out of 5 stars

*Dr. Hornyak as a good educator. He answered all my questions and gave me a better understanding of my back problem and my treatment options.

5 out of 5 stars

I would probably not recommend anyone based on only one visit.

5 out of 5 stars

*Dr. Hornyak answered all my questions and concerns, his confidence on my surgery is very reassuring.

Other Reviews from Around the Web

5 out of 5 stars

very informative. Everyone at Hartford health were wonderfu; to me. I have recommended you to six persons that have back pain and limitations similar to what I used to have prior to my surgery.

5 out of 5 stars

This doctor is the ultimate professional with a fine demeanor, and always showing that he cares. I recommend him to anyone.

5 out of 5 stars

Dr. Hornyak was very knowledgeable and kind. He took the time to explain the issues in detail and answered all my questions. I am very grateful for his time and patience.

5 out of 5 stars

Explained and answered any concerns regarding my procedure before surgery. I now feel a hundred percent better and am grateful. He is very direct, honest and doesn't sugarcoat anything. Might be construed as rude by some, but I prefer the person operating on me to be direct and honest so I know what to expect. Overall, I am pleased with my experience.

5 out of 5 stars

Nicest staff, all questions were answered so I could understand. Spinal fusion went great. Will continue to see them for my health needs.

5 out of 5 stars

From start to finish this has got to be one of the best experiences I have ever had to deal with. Doctor hornyak and his staff are very knowledgeable caring, they explained everything. They have a app, with videos/trainings exercises ofwhat to expect This is am amazing skilled doctor, I was up and walking 1 day! Thanks so Dave, and everyone on his team for giving me my life back!!



Aetna, Anthem, BCBS Medicare, CarePartners of Connecticut, Cigna Healthcare, Colonial Cooperative Care, Community Health Network of Connecticut, Inc., Connecticare, Connecticare Commercial, Connecticare Medicare, Corvel, Coventry, Essence Healthcare, Evercare, First Health Group Corp., Focus, Harvard Pilgrim, Health Connecticut, Health Direct, Health New England, Healthy Connecticut, Multiplan, Northeast Health Direct, One Health Plan/ Great-West Healthcare, Oxford Health Plans, Prime Health Services, Private Health Care Systems, Inc., Senior Whole Health, United Healthcare, WellCare of Connecticut, Inc.

This information is subject to change at any time. Please check with your insurance provider before scheduling your appointment or receiving services to confirm they are a participating member of the Hartford HealthCare network.