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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

  • Adult Contact Lenses
  • Contact Lenses
  • Diabetic Eye Examinations
  • Emergency Care
  • Eye Examinations
  • Eyeglasses
  • Glaucoma Evaluations
  • Optometry
  • Post Surgical Exams
View all 9 Treatment & Services +

Specialty in Diseases & Conditions

  • 20/20 Vision
  • Aging and Your Eyes
  • Allergic Conjunctivitis
  • Astigmatism
  • Blepharitis
  • Conjunctivitis
  • Diabetic Eye
  • Dry Eyes
  • Eye Infections
  • Eye Inflammations
  • Farsightedness
  • High Blood Pressure (Hypertension)
  • Myopia (Nearsightedness)
  • Ocular Allergies
  • Ocular Health
  • Ocular Injuries
  • Pink Eye
  • Red Eye
  • Refractive Errors
View all 19 Specialties +


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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 10/21/2022, 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

466 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

55 Patient Comments

Reviewed on Nov 21, 2023

I always have a wonderful experience with Dr. Kousnick. His expertise really shined when I asked him the questions. When he diagnosed the problem, not only is he crystally clear, but also right on the issue. I am so grateful that I have had him as my eye doctor.

Reviewed on Nov 10, 2023

This Dr is always great

Reviewed on Nov 9, 2023

He was here easy to understand in explaining what was going wrong with my eye now It has been a long journey with many doctors he is one of the best I have had

Reviewed on Nov 8, 2023

Dr. Gregory was very helpful, and helped me feel at ease regarding my treatment

Reviewed on Nov 7, 2023

Dr.K. Was courteous, thorough & a pleasure.He wears his profession well & compliments your Hospital System.

Reviewed on Oct 26, 2023

Dr Kozynick and his assistant are exceptional!

Reviewed on Oct 25, 2023

Both Robert and my provider were outstanding. Best ever experience with eye drops and my provider explained everything to me.

Reviewed on Oct 18, 2023

Wonderful doctor & staff. Always efficient.

Reviewed on Oct 18, 2023

Doctor investigated a concern immediately.

Reviewed on Oct 17, 2023

I have had this Doctor for mean, mean years. Like him very much. I have no intentions of changing.

Reviewed on Sep 21, 2023

He told me something that I never knew about my diabetes. He was very concerned about my A1C and told me what could happen if I dont take care of myself. I told him I am working on my A1C. He answered my questions with concern. I really like this doctor. He is thorough and I can tell that he cares.

Reviewed on Sep 20, 2023

Dr Kosunck is a very good doctor and I would highly recommend him.

Reviewed on Sep 19, 2023

Great doctor!

Reviewed on Sep 6, 2023

I like Dr kosunick. Very thorough, explains thing. Very easy to talk to. I trust he's good care of me.

Reviewed on Sep 5, 2023

Dr. Was gracious and saw me even aftrr I was 10 minutes late. I appreciated not having to reschedule

Reviewed on Sep 5, 2023

Oh I always have had positive experience with my Doctor. I appreciate the respectful manner in which he has treated me.

Reviewed on Aug 31, 2023

Doctor did a good job!

Reviewed on Aug 23, 2023

Dr Kosunick is very thorough. He explains any issues and concerns in an easy to understand way.

Reviewed on Aug 18, 2023

Dr Kostinck is the best

Reviewed on Aug 18, 2023

Dr. Kosunick he is a very good at listening and find problems with his patients. Thank goodness

Reviewed on Aug 17, 2023

Dr. Greg does a thorough job and answers all my questions.

Reviewed on Aug 8, 2023

My experience with the Doctor was very helpful and he is a very nice person.

Reviewed on Jul 31, 2023

Always a good experience with Dr. Greg. He is very informative, and answers all of my questions. He is helping me with my future needs as well. Terrific Doctor!

Reviewed on Jul 31, 2023

I have, and will continue to recommend Dr. Greg to anyone I meet who might be looking for a good Doctor.

Reviewed on Jul 14, 2023

Dr is excellent at his job and nice person

Reviewed on Jul 11, 2023

Very thorough and detail. He is a very good doctor

Reviewed on Jun 20, 2023

Very good experience with this doctor. Terrible experience trying to reach my other doctors in the clinics.

Reviewed on Jun 19, 2023

Outstanding care from this doctor

Reviewed on Jun 8, 2023

Dr Kosunick is so good at explaining everything he is looking at in my eyes and what he looks for. Took time to explain more about T1D and how high glucose numbers affect blood vessels and how looking at eyes gives idea of what is going on inside the body. Gave me better understanding of why need to control blood sugars.

Reviewed on Jun 2, 2023

I have recommended Dr Kosunick to 2 good friends and they are patients. I have been going to Dr K for 16yrs. He is just a nice person A+

Reviewed on May 31, 2023

Dr. Was very clear in the explanation of my issues and concerns. I felt very comfortable.

Reviewed on May 31, 2023

Excellent experience. Was very impressed with the doctor and everyone involved in my visit. Would highly recommend this facility.

Reviewed on May 31, 2023

The. Best

Reviewed on May 30, 2023

Dr. Kosinec had to be 1 of the best eye doctors I have ever seen or met with. He is very descriptive with any questions I have and a very nice person in general.

Reviewed on May 24, 2023

Doctor was very professional.

Reviewed on May 23, 2023

I like my doctor very much. I came from another state to see him.

Reviewed on May 23, 2023

The doctor was stellar. He discussed everything with me, went over my test results, and treated me like a person. He was kind, caring, and made me feel very comfortable.

Reviewed on May 12, 2023

Both doctors I met were excellent

Reviewed on Apr 28, 2023

I have always had excellent care from staff and doctor

Reviewed on Apr 27, 2023

Dr. Kousunick is the very best. He is extremely caring and provides the timely care for my illness. I don't think I can find any one better than him.

Reviewed on Apr 25, 2023

My children will now be going to Dr. Kosunick.

Reviewed on Apr 21, 2023

While this was a new provider for me, he was excellent and it was a great experience. While not geographically convenient for me, I would return to see Dr K. Was very appreciative.

Reviewed on Apr 19, 2023

Very informative and kind both staff and Dr.

Reviewed on Mar 30, 2023

It is always a pleasure to have Dr. Kosunik as my optometrist. He is always very pleasant and treats me with perfect respect. He provides clear explanations of every condition and procedure and is very thorough in his exam.

Reviewed on Mar 15, 2023

Pleased with professionalism of Dr. Kosunick and staff

Reviewed on Mar 15, 2023

Dr. Kosunick is a excellent provider, very thorough and professional. He's a fantastic addition to your Staff.

Reviewed on Feb 22, 2023

Perfect experience. Dr K is great.

Reviewed on Jan 21, 2023

Dr. K is awesome, genuinely cares for the customer and is a credit to Cleveland Clinic.

Reviewed on Jan 19, 2023

He's always been a respectful doctor. He's always been upfront with me on my eye health.

Reviewed on Jan 17, 2023

Dr. Kosunick is not only very personable, but he is very thorough in the examination. He always explains findings with a show and tell from his charts or models.

Reviewed on Dec 29, 2022

Dr. Kosunick was very attentive during my appointment. He was quite personable. He took time to answer all of my questions and concerns. He connected on a "human" level. Great experience.

Reviewed on Dec 29, 2022

Very good provider.

Reviewed on Dec 22, 2022

The doctor's office is always clean, parking is easy, staff is professional and friendly.

Reviewed on Dec 22, 2022

The doctor and staff are always considerate and explain any issues in a clear manner.

Reviewed on Dec 22, 2022

Doctor was compassionate and caring, explaining everything I needed to know

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