alert icon Coronavirus

Think you may have COVID-19?
Find out where you can get tested

Need a vaccine or booster?
Now scheduling for ages 6 months and up

Coming to a Cleveland Clinic location?
Visitation and mask requirements

Department Ophthalmology
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages English
Surgeon Yes
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus

Specialties & Treatments

Treatment & Services

  • Cataract Evaluations
  • Cataract Implant Surgery
  • Cataract Surgery
  • Eye Examinations
  • Lens Implant
  • Neuro-ophthalmic Evaluation
  • Neuro-Ophthalmology
  • Ophthalmic Surgery
  • Ophthalmology
  • Optic Nerve Sheath Decompression Surgery
  • Phacoemulsification
  • Strabismus Surgery
  • Temporal Artery Biopsy
View all 13 Treatment & Services +

Specialty in Diseases & Conditions

  • Cataracts
  • Optic Atrophy
  • Strabismus
View all 3 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

About Gregory Kosmorsky, DO

Gregory S. Kosmorsky, DO, is a Staff Physician in the Department of Neuro-Ophthalmology at Cleveland Clinic Cole Eye Institute.

Dr. Kosmorsky's clinical interests include neuro-ophthalmology, strabismus, cataract surgery and refractive surgery. He has been named a "Best Doctor" by Cleveland Magazine (2007-2008).

He completed his DO at Philadelphia College of Osteopathic Medicine in Philadelphia, Pa., in 1979. Then he finished a rotating internship at Delaware Valley Medical Center, Langhorne, Pa., and a residency focusing on adult neurology at Temple University Hospital in Philadelphia, Pa. He completed two fellowships, the first in ophthalmology at Cleveland Clinic and a second one in neurology/ophthalmology at Washington University Medical Center in St. Louis, Mo.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Cleveland Clinic
Cleveland, OH USA

Fellowship - Washington University Medical Center
St. Louis, MO USA

Residency - Temple University Hospital
Adult Neurology
Philadelphia, PA USA

Internship - Delaware Valley Medical Center
Rotating Internship
Langhorne, PA USA

Medical Education - Philadelphia College of Osteopathic Medicine
Philadelphia, PA USA

Undergraduate - Temple University
Philadelphia, PA USA


  • Psychiatry and Neurology - Neurology
  • Ophthalmology

Specialty Interests

Cataract Surgery, neuro-ophthalmology, Refractive Surgery, Strabismus

Awards & Honors

  • Cleveland Magazine, Best Doctors 2007-2008
Research & Publications

Research & Publications

See publications for Gregory Kosmorsky, DO.

(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 10/4/2021, Dr. Kosmorsky 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

412 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
4.5 out of 5
Explains 4.4
Courtesy, Respect & Concern 4.5
Patient Rating of Doctor 4.4

49 Patient Comments

Reviewed on May 31, 2022

Love Dr Kosmorsky, he is great.

Reviewed on May 24, 2022

Dr Kosmorsky always puts me at ease.

Reviewed on May 2, 2022

Dr. Kosmorsky was affable, knowledgable and efficient. He fixed my eye's problem immediately - - It was almost miraculous.

Reviewed on Apr 15, 2022

Did not ask if I wanted a new prescription. Or knew glasses. Dr. Kosmorsky did not do a complete eye examination. Did not care if I could see when I left. Rush me out of the office. Did not offer any type of sunglasses. Felt very rushed. Seemed like he could care less.

Reviewed on Mar 29, 2022

This doctor and his staff are top notch!

Reviewed on Mar 29, 2022

The staff was courteous, explained the surgery procedure. Answered all my questions and concerns. And Dr Kosmorsky explained the surgery procedure and answered all my questions.

Reviewed on Mar 24, 2022

It great experience. Very pleased with this Dr and staff.

Reviewed on Mar 24, 2022

The doctor was great to work with highly recommend

Reviewed on Mar 15, 2022

Completely satisfied with the whole process, scheduling, wait time, nurse and doctor's consideration and kindness.

Reviewed on Mar 3, 2022

Enjoy every visit with Dr. Kosmorsky and staff.

Reviewed on Mar 3, 2022

I have an annual check up with this doctor. He and his nurses are always very attentive and informative

Reviewed on Mar 1, 2022

Dr. Kosmorsky is someone I would always go to for eye issues. Skilled doctor and very nice person.

Reviewed on Feb 24, 2022

I believe Dr. Kosmorsky saved me from taking medical advice that might have further compromised my vision.

Reviewed on Feb 22, 2022

Dr seem impatient and rush the visit when he came into the room. Felt discouraged to ask any further questions about my condition

Reviewed on Jan 14, 2022

The Dr was very concerned and attentive to my problem. Answered questions and provided some initial assessment pending the MRI

Reviewed on Jan 13, 2022

Very good! Dr. Kosmorsky is personable and easy to talk with.

Reviewed on Dec 14, 2021

Dr kozmorsky is a truly dedicated professionalHe is extremely thorough and dedicated to his patient's careI would recommend him to anyone needing care

Reviewed on Dec 10, 2021

Dr. Kosmorsky is a very thorough a tentative Doctor Kosmorsky gave a thorough exam and has an excellent bedside manner. I would recommend him to any patient

Reviewed on Nov 18, 2021

Dr. Koz is one of the few Dr.'s that have been consistent in my care for years. Superior service always provided

Reviewed on Nov 16, 2021

Our original appointment was in January 2022. Called back a 2nd time to see if it could be sooner, but it couldn't. We were called back and a closer appointment was available and we took it. Thanks. Frustrated at first but it was moved up which was a pleasant surprise. Unfortunately, there was nothing Dr Kosmorsky could advise to help my son. His double vision was improving and only time could help in his recovery.. Thanks for being honest! Only wish is that he still did neurology, which he told us that he didn't do anymore.

Reviewed on Nov 9, 2021

I definitely would recommend this care provider

Reviewed on Sep 30, 2021

I love Dr Kosmorsky! He listened to my concerns and agreed to the treatment I wanted to try. Very open to listen to my concerns

Reviewed on Sep 28, 2021

The Doctor treated me with the respect and compassion that he always has. I would highly recommend him to anyone with my rare eye disease.

Reviewed on Sep 23, 2021

Good experience. Disappointing for the information given. Dr confirmed the previous diagnoses and confirmed that there is no treatment to correct my vision.

Reviewed on Sep 23, 2021

Dr tested my eyes and explained why there was no treatment for my problem.

Reviewed on Sep 16, 2021

Dr. Kosmorsky came highly recommended,,his bedside manor..was flippant at best..suggested he had had same issue since he was 17 years old...who ever heard of having an over active brain..???,,won't visit him again

Reviewed on Sep 16, 2021

The doctor knows his stuff and I think he nailed the diagnosis of a rare condition but his bedside manor was the worst I've experienced in CCF system. As soon as he figured out the problem he only addressed me and acted as if my mother wasn't in the room. She has cognitive issues but they aren't to the point that she can't communicate or follow a conversation. When I asked if there were any tests we could schedule to confirm diagnosis he bluntly said yes but it can only be done via dissection after death. That was horrible thing to say in front of mom. A person with an ounce of empathy would have known the intent of my question was for the near term. It's kind of moot after death! Again horrible experience.

Reviewed on Sep 3, 2021

Would have liked the Dr to check my prescription.

Reviewed on Sep 2, 2021

This is an appointment I waited months for. I traveled 4 hours to come to the clinic, and I scheduled work around this appointment. I had seen Dr. Shook and he referred me to Dr. Kosmorsky as a neuro-ophthalmologist as part of my workup. Dealing with an unknown medical condition is stressful, but I had been looking forward to getting some answers. Instead, Dr. Kosmorsky spent less than 5 minutes with me. I did not have an opportunity to discuss my symptoms with him. He heard me say I had blurry/double vision, ordered a test from a tech, then dismissed me out of hand. He did not ask about other symptoms, he was unaware that I had had a brain MRI which led to me coming to the clinic. When I brought up other symptoms and asked if those were consistent with his diagnosis, he said no, those are caused by something else. I asked If there could be another cause that would account for more of my symptoms. He said yes, but Dr. Shook will do that work up. The indifference he showed to me as a patient and the dismissive nature he treated me was not what I expect out of the Cleveland Clinic. It was abundantly clear to me that he did not read anything in my chart before walking in the room. It was a waste of time.

Reviewed on Sep 2, 2021

Dr Kosmorsky is an excellent doctor. He has been my doctor for at least thirty years. I was legally blind from two cataracts and now my vision is perfect. I tell everybody to go and see him if they have vision problems. I have done this through the years.

Reviewed on Sep 2, 2021

Not sure what you mean by "our practice." If you mean Dr. Kosmorsky, I do not recommend him. I accepted the appointment with him only because I had no way to get to the Main campus. I feel the entire visit with Dr Kosmorsky was a total waste of time.

Reviewed on Aug 24, 2021

Dr. Kosmorsky is always in a very good mood and conveys it along to you. He is courteous, friendly, professional and very attentive to you as a person and not a number as happens when seeing some professional personnel.

Reviewed on Aug 19, 2021

Doctor did not know why I was there. Nor did he ask me any questions about my vision.

Reviewed on Aug 19, 2021

Frustrated that Dr was unable to let me know what was going on. More tests. Hope with results of blood work, a DX can be reached.

Reviewed on Aug 17, 2021

Dr. Kosmorsky was quick and efficient in ordering the correct tests etc...However, he never asked my history to understand my condition. When I started describing some of my symptoms, he cut me off and made it clear the appointment was over.

Reviewed on Aug 17, 2021

I was sent by my provider to have my eyes examined for increased headaches. The assistant spent more time with me then the doctor. He blew in I told him the reason & he commented how providers always send him with these complaints. He checked my eye pressure, said it was fine & then said go head and get out there, I was wasting his time. I waited 3 months for a 5 minute appointment with him. I have see him in the past & thought he had a terrible bedside manor it hasn't got any better.

Reviewed on Aug 13, 2021

I did not care for the doctor, didnt seem to care about my vision problem with light and motion sensitivity. Did a basic routine check and injected my c2 level stated if it didn't work there was nothing else he could do. Would never recommend anyone else to him.

Reviewed on Aug 13, 2021

Doctor as I stated before didn't seem like he cared to get to the problem. Gave me a shot and said it that doesn't work can't do nothing else for me

Reviewed on Aug 10, 2021

Dr. Kaczmarski Really listen to me and treated me with the upmost respect I told him vision was changing in my right eye after cataract surgery he looked at it and said you have scars tissue he gave me 15 shots to the eye with the laser within one day I was seeing perfect with the radio again the left eye has been very good thank you we need more people like him him

Reviewed on Aug 10, 2021

Dr. Kosmorsky is not very personable which would be fine except he way in which he delivered my "diagnosis". He came in said well, I don't know what's wrong. Shrugged and then said maybe this, but even if it was there's nothing we can do. Nearly refused to order any other tests and said my other doctors could order one if they wanted. Only by sharing some family medical history did he agree to more tests and said fine, we can go fishing. Kind of a horrible way to be treated when you've been having unexplained vision problems for over a year with no correlation to your eye health,

Reviewed on Aug 10, 2021

My anesthesiologist was awesome and professional, and Dr Kosmorsky is a great surgeon I would recommend him to everyone, the care I received from his whole staff was great

Reviewed on Jul 22, 2021

This Dr & his team treated my husband years before and we both really like him as well as our confidence in his work .

Reviewed on Jul 20, 2021

Dr Kosmorsky was very attentive. He listened, and was very thorough In his exam and assessment

Reviewed on Jul 15, 2021

Very clear and concise during the visit - Doctor K. & his staff are keepers - even had a few laughs along the way

Reviewed on Jul 13, 2021

Dr. Kosmorsky was very kind, thorough, and explained my problem very well. He answered all of my questions and took the time to make sure I was totally satisfied. The office staff was also very kind!

Reviewed on Jul 2, 2021

Dr. Kosmorsky spent an appropriate amount of time listening to my concerns and suggesting a sound course of action. I am completely satisfied with his service.

Reviewed on Jun 24, 2021

everyone at the strongsville fam hlth centre is helpfull and courteuos. dr Kosmorsky and his staff are exceptionally friendly and professional. They make u feel very relaxed and uplifted.

Reviewed on Jun 22, 2021

This doc is a good one. He is competent but makes it a fun experience.

Reviewed on Jun 22, 2021

good experience with the Dr. and his staff. iui

Back to Top