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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
  • Neurosurgery
  • 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

Hospitals and Organizations

  • Hartford HealthCare Medical Group
  • Backus Hospital
  • Integrated Care Partners
  • Hartford Hospital


University of Utah ‐ Skull Base Surgery

New York Medical College ‐ General Surgery

Medical School
University of Maryland School of Medicine


Verified Patient Reviews

5 out of 5 stars

When I met Dr.Hornyak 2 years ago he was professional but reserved I thought. In the 2 years since that I have been seeing him, he is more relaxed, which I appreciate. He is very knowledgeable and is willing to talk things through with me which makes me more confident in my condition.

5 out of 5 stars

All my questions answered.

5 out of 5 stars

I would very highly recommend the them.

5 out of 5 stars

Dr. Hornyak was very focused on discussing my diagnosis and surgery options and concerns. He was friendly and made me feel at ease

5 out of 5 stars

Dr Horniak was easy to speak to,And amazingly informative

Other Reviews from Around the Web

5 out of 5 stars

Dr. Hornyak preformed a spinal decompression on me about 2 months ago and I feel like I'm in my 20's again. That's when this all started, I'm in my 40's now. He took my claims seriously and provided the best care. I'm not a 100% yet, his office has continued to provide care and offer support. I would absolutely recommend Dr. Hornyak and his team. They changed my day to day life for the better and delayed the enviable need for a walker or wheelchair.

5 out of 5 stars

Dr. Hornyak spent all the time I needed to understand options regarding my possible back fusion. He came up with another approach that seemed more Prudent then just diving in to a major operation. He seemed more interested in a solution that would benefit me the most instead of a solution that would make him the most money.

5 out of 5 stars

He was very caring and gave us possible options for treatment. His recommendation was for a procedure he would not be doing.



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

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.