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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


Additional Locations

Specialties & Treatments

Treatment & Services

  • Cataract Evaluations
  • Cataract Implant Surgery
  • Cataract Surgery
  • Eye Examinations
  • Lens Implant
  • Neuro-ophthalmic Evaluation
  • Neuro-Ophthalmology
  • Ophthalmic Surgery
  • Ophthalmology
  • Phacoemulsification
View all 10 Treatment & Services +

Specialty in Diseases & Conditions

  • Cataract and Intraocular Lens Implantation in Cataract Surgery
  • Cataracts
  • Cataracts and Cataract Surgery
  • Optic Atrophy
  • Papilledema
View all 5 Specialties +


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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 and cataract 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

432 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
4.4 out of 5
Explains 4.4
Courtesy, Respect & Concern 4.5
Patient Rating of Doctor 4.4

35 Patient Comments

Reviewed on May 1, 2023

He was very rude, shugged his shoulders when I was upset with his assessment. Cared not to help me with my situation. Didn't recommend any further actions or advice. Had no care about my problems. Told me to wear sunglasses and can't fix normal. My problems are not normal. I've seen multiple doctors and hoped he could help but didn't seem to care. I'm still experiencing issues and I am lost at what to do seeing my doctor could care less to help. What kind of doctor shrugs his shoulders when a patient is asking for help?

Reviewed on Apr 27, 2023

Dr. Kosmorsky is a wonderful doctor; he instills confidence that he will care & deliver the best outcome for you; has a great sense of humor too which put me at ease!

Reviewed on Mar 21, 2023

Excellent Doctor!!! Great experience.

Reviewed on Mar 7, 2023

The doctor was very professional and the wait time was very low. I was glad to get quick answers but the delivery was a little abrupt given that this is likely leading to a life altering diagnosis.

Reviewed on Mar 7, 2023

My experience with the Dr. Was pleasant. He answered my questions and reassured me the swelling was not back on my optic nerves. He was nice and pleasant and did a thorough exam.

Reviewed on Mar 3, 2023

Dr. Kosmorsky is awesome. He listened to my concerns and answered all my questions.

Reviewed on Mar 2, 2023

All of the staff was very personable and considerate. I appreciate Dr. Kosmarsky s' clear communication. My tests and results were done very efficiently.

Reviewed on Mar 2, 2023

Dr. Kozmarski was very compassionate and knowledgeable

Reviewed on Mar 2, 2023

Great Doctor

Reviewed on Feb 9, 2023

Dr. Kosmorsky has been checking my eyes for several years! I have total confidence in him. He's very competent & he has a great sense of humor!

Reviewed on Feb 7, 2023

I would recommend him to anyone

Reviewed on Jan 31, 2023

The doctor provided a detailed easily understandable explanation of my condition and the appropriate treatment options.

Reviewed on Jan 20, 2023

Wonderful experience. Very excellent doctor.

Reviewed on Jan 19, 2023

Dr Kazmorsky has a great bedside manner. He was pleasant and efficient. He put my mind at ease with his openness to discuss my concerns.

Reviewed on Jan 13, 2023

I can't believe this physician is employed by an institution like CCF. He had no bedside manner, empathy, or care during my visit.

Reviewed on Jan 10, 2023

Dr Kosmorsky is amazing he's friendly and very knowledgeable

Reviewed on Dec 22, 2022

My nurse was excellent!! She provided thorough and professional care!!

Reviewed on Dec 20, 2022

Excellent physician thorough and explained everything.

Reviewed on Dec 8, 2022

Doctor was abrupt, not helpful or caring. Rushed and not interested in helping me understand my problems or options for treatment. I will be seeking alternative care.

Reviewed on Dec 1, 2022

Highly recommend this Doctor

Reviewed on Nov 29, 2022

Dr. Kosmorsky was very cordial and I appreciate his medical expertise.

Reviewed on Nov 10, 2022

Everyone including the doctor were very nice and informative.

Reviewed on Oct 25, 2022

If needed, I will definitely see This doc again!!!

Reviewed on Sep 30, 2022

Excellent physician/clinicianHe takes care of several family members

Reviewed on Aug 22, 2022

Felt dr was not professional

Reviewed on Aug 18, 2022

Dr. Kosmorsky was great. Very direct and clear communications. Very knowledgeable and great sense of humor. Thanks Doctor.

Reviewed on Aug 15, 2022

Dr. K listened to my concerns and addressed each completely.

Reviewed on Aug 2, 2022

The staff were amazing, except the physician.

Reviewed on Jul 19, 2022

Dr. Kozmorsky has great bedside manner and my complete trust. He also has wonderful skill and knowledge for explaining my condition and concerns. Over he is an exceptional physician!!!!!

Reviewed on Jun 21, 2022

Dr. Greg Kosmorsky is the only Dr. / specialist that I still make app'ts with, am satisfied with & trust.

Reviewed on Jun 21, 2022

Very good treatment by Dr and nurse . Is a good team

Reviewed on Jun 21, 2022

Dr Kosmorsky has been my ophthalmologist for many years and has always shown care and concern for my advanced toxic retinopathy. I have a great deal of respect for his ability In treating my condition.

Reviewed on Jun 14, 2022


Reviewed on May 31, 2022

Love Dr Kosmorsky, he is great.

Reviewed on May 24, 2022

Dr Kosmorsky always puts me at ease.

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