Department Ophthalmology
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages English
Surgeon No
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus



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Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Medical Education - Illinois College of Optometry
Chicago, IL USA

Undergraduate - Ohio State University
Columbus, OH USA

Research & Publications

Research & Publications

See publications for Jason Marcellus, 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 10/7/2020, Dr. Marcellus 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

33 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
5 out of 5
Explains 5
Courtesy, Respect & Concern 5
Patient Rating of Doctor 5

9 Patient Comments

Reviewed on Sep 15, 2020

Dr. Marcellus is top shelf. wish I could see him for annual exams.

Reviewed on Jun 19, 2020

I was a little concerned, when the receptionist didnt want to make an appointment for me - since it had been overa year since my eye surgery. But he spoke with a doctor and came back and made it for me.

Reviewed on Jun 19, 2020

Dr Marcellus is very caring - during the worst of the virus when everything was closed - he talked to me frequently by phone and provided explanations and recommendations

Reviewed on Apr 3, 2020

Dr Marcellus is so helpful and a really caring, genuine guy. I would highly recommend to all.

Reviewed on Feb 26, 2020

I really appreciate the swiftness and courtesy from the office to make my appointment happen. The doctor and his team were super awesome in helping me acquire all the necessary paperwork needed for the military. Thanks again.

Reviewed on Jan 3, 2020

The Physician was extremely pleasant to work with. He was down to earth, knowledgable, and easy to talk to. He made our experience so much more enjoyable because of his ability to be personable and professional.

Reviewed on Jan 3, 2020

Dr Marcellus has a way of making patients comfortable. He answered all my questions and I was very pleased.

Reviewed on Dec 26, 2019

the doctor was great!

Reviewed on Nov 26, 2019

Dr. Marcellus was amazing. Thorough, personable and funny!

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