alert icon Coronavirus

Now scheduling COVID-19 vaccine appointments for ages 12+
Schedule a vaccine appointment
COVID-19 vaccine FAQs

Going to a Cleveland Clinic location?
New visitation hours
Masks are required for patients and visitors (even if you're vaccinated)

Department Ophthalmology
Primary Location Elyria Family Health Center
Type of Doctor Both Adults and Children & Adolescents
Languages English
Surgeon No
Locations Specialties & Treatments

Treatment & Services

  • Cataract Evaluations
  • Diabetic Eye Examinations
  • Eye Examinations
  • Glaucoma Evaluations
  • Macular Degeneration Evaluations
  • Ophthalmology
  • Optometry
  • Post Surgical Exams
View all 8 Treatment & Services +

Specialty in Diseases & Conditions

  • Age-Related Macular Degeneration
  • Cataracts
  • Diabetes
  • Emergency Care
  • Eye Infections
  • Eye Inflammations
  • Hypertension - High Blood Pressure
  • Ocular Allergies
  • Ocular Injuries
  • Retinal Detachment
View all 10 Specialties +


Is Cleveland Clinic Part of Your Insurance?

Review a list of accepted insurance plans for our Northeast Ohio locations or learn more about purchasing a contracted managed care plan.

View All Plans
Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Medical Education - The Ohio State University College of Optometry
Columbus, OH USA

Undergraduate - Bowling Green State University
Bowling Green, OH USA

Specialty Interests

General optometry

Research & Publications

Research & Publications

See publications for Gregory Kosunick, OD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 9/16/2020, Dr. Kosunick has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

344 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.9 out of 5
Explains 4.9
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

39 Patient Comments

Reviewed on May 7, 2021

dr kosinek always is very courteous and takes time for my many guestions and is interested in my care he is just excellent! done. very good.

Reviewed on May 4, 2021

Dr. Kosunick gives me/my eyes, his full attention at every appointment. I was blessed to have Dr. Costin perform my cataract surgery at the Cole Eye Institute about 7 years ago. As a patient, I felt he cared about me as a person and wanted my eyesight to be the best possible. Dr. Kosunick has that same impact. Every time I see him I feel he does know my eyes and does offer his guidance on ways to help me see better.

Reviewed on Mar 26, 2021

I have to say that Dr. Gregory M Kosunick OD has to be one of the most nicest and thorough Drs I have even seen in person. his opinions and his diagnosis have been perfect. Everyone on his team in that North ridgeville office followed all protocols to make my appointment go safely and efficiently.

Reviewed on Mar 26, 2021

Dr. Kosunick gave excellent care to our children. He is clearly experienced and confident working with pediatric patients and gives clear instructions on future care. No significant time delays during the visit. Overall a wonderful experience.

Reviewed on Mar 26, 2021

Dr. Kosunick provided excellent care to our special needs child. Our son was made comfortable and was able to complete all the standard expected care without any difficulty. The communication was very effective and plans for the future very clear.

Reviewed on Mar 19, 2021

the P.A. and doctor were both professional and friendly and used covid protocols... the Dr. reviewed my history and did a thorough eye exam... i didnt feel rushed...

Reviewed on Mar 17, 2021

No problems whatsoever. The Dr. was prompt and very efficient with the exam.

Reviewed on Mar 9, 2021

He is by far the best eye doctor I've ever been to! He truly cares about his patients and takes the time to make sure you feel comfortable with everything going on in the appointment!

Reviewed on Feb 8, 2021

I am lucky to have *Dr. Kosunick for an eye doctor! He is so knowledgeable and efficient and caring.

Reviewed on Jan 22, 2021

I believe he is a very good doctor.

Reviewed on Dec 19, 2020

Dr Kustnic is great.

Reviewed on Dec 10, 2020

excellent doctor. very clear with answers to questions. caring man

Reviewed on Dec 10, 2020

Dr. was very courtious and informative and encouraging about my treatment.

Reviewed on Dec 10, 2020

Was very pleased with Dr.s information.

Reviewed on Dec 10, 2020

Physician's have been very caring and considerate.

Reviewed on Dec 7, 2020

Excellent Dr.

Reviewed on Nov 21, 2020

Excellent doctor...fully answers all questions and is thorough. I would highly recommend this doctor.

Reviewed on Nov 17, 2020

Dr.Kosinuk always make sure that I understand the reasons for his concern about my eyesight. I find him to be very knowledgeable and eager to explain any questions I may have.

Reviewed on Nov 16, 2020

Dr. Kosunick is a thorough physician and has excellent interpersonal skills. I highly recommend him

Reviewed on Nov 9, 2020

Dr. Kosunick was very thorough and helpful in explaining and laying out a plan for my cataract removal procedure.

Reviewed on Oct 29, 2020

he a great doc I won't change him for anyone else

Reviewed on Oct 21, 2020

Great doctor!!!

Reviewed on Oct 20, 2020

I have already recommended Dr. Kosunick to friends looking for an eye doctor.

Reviewed on Oct 20, 2020

Dr. K has always been honest and has always given a good explanation for what is going on with my eyes.

Reviewed on Oct 16, 2020

I really appreciate the care and concern the Dr takes about eye.

Reviewed on Oct 15, 2020

I felt like I was truly valued and heard during the appointment. The provider explained a lot about my eyes and potential future plans which I have not experienced with another optometrist/ophthalmologist.

Reviewed on Sep 15, 2020

A very special doctor!!

Reviewed on Sep 15, 2020

An excellent doctor!!I've used him for years!!

Reviewed on Sep 10, 2020

I trust my doctor to provide the best care possible. We've worked together for many years. He is top notch, thank you!

Reviewed on Sep 3, 2020

One of the best doctors of any kind that I've had.

Reviewed on Aug 18, 2020

Dr. said I should call in a few days to let him know if conditions improved. He did not respond to my initial call when I said there was no improvement, nor to a later MyChart message I sent saying it was better.

Reviewed on Aug 18, 2020

I called the Wellington office and a person there helped me get into a provider the same day.

Reviewed on Aug 11, 2020

overall excellent and respectful care/ kindness. would make one suggestion to have better process of seating area with used and unused seating. perhaps placing laminated cards to do not sit in seats that were just used. noticed that in my time waiting in the area inside the office part, after initial first exam when waiting to see eye doctor. The seats were unmarked and new people came and sat without proper sanitation of seats. thanks!

Reviewed on Aug 5, 2020

the office was very thorough in following proper protocol. This was the best experience I've had with eye doctor in years. He listened and offered suggestions for my dry eye issue and didn't act like it was it was a non issue. so glad I found him

Reviewed on Aug 3, 2020

Dr K is always kind and respectful. He listens to my concerns and answers all of my questions completely and in an understandable way. Very pleased with the care I get from him.

Reviewed on Jul 30, 2020

Dr. Kosunick is also excellent. I couldn't be more pleased with the care he has given me -- and my eyes -- for many years now. I look forward to our yearly visits.

Reviewed on Jul 28, 2020

Dr. Kosunick was very thorough with my eye exam. He discovered a small amount of bleeding behind my eye and prescribed testing for diabetics. I am now being treated for prediabetics do to his exam. Thank you Dr. Kosunick.

Reviewed on Jul 14, 2020


Reviewed on Jul 1, 2020

got in quickly. The doctor was efficient

Related Videos Featuring Gregory Kosunick, OD

Related Videos Featuring Gregory Kosunick, OD

Back to Top