Locations:
Loading Complete
Joseph Sleiman

Joseph Sleiman, MD

Gastroenterology

Need help scheduling? Call 216.444.6536

Highlights

Age Groups Seen

  • Child
  • Adolescent
  • Adult

Languages

  • English

Gender

Male

Locations

  1. A Building - Crile Building
    • phone:
    • fax:

Education & Board Certifications

Education

  • Fellowship: Cleveland Clinic, 2025
  • Fellowship: University of Pittsburgh Medical Center, 2024
  • Residency: Cleveland Clinic Foundation, 2021
  • Fellowship: American University of Beirut, 2018
  • Medical Education: University of Balamand - Faculty of Medicine and Medical Sciences, 2017
  • Undergraduate: North Lebanon College, 2010

Board Certifications

  • Gastroenterology: American Board of Internal Medicine, 2024
  • Internal Medicine: American Board of Internal Medicine, 2021

Research & Publications

See publications for this provider. (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

Cleveland Clinic physicians and scientists collaborate with industry to advance medical breakthroughs. These partnerships help commercialize discoveries for public benefit while maintaining scientific integrity. To ensure transparency and minimize potential bias, Cleveland Clinic reviews these relationships and publicly discloses when physicians/scientists receive significant compensation for consulting, serve in fiduciary roles, receive royalties, or hold equity interests related to their work. We manage potential conflicts through approval processes, annual reporting, and targeted management plans.

As of 2026-04-11, Dr. Sleiman has reported the financial relationships with the companies listed below.

Equity Dr. Sleiman owns stock or stock options in the following companies for activities as a founder, inventor, discoverer, developer:

  • MD Executives

Royalty Payments. Dr. Sleiman receives or has the right to receive royalty payments for inventions or discoveries commercialized through the companies shown below:

  • MD Executives

Consulting and/or Speaking. Dr. Sleiman receives fees of $5,000 or more per year (or, in rare cases, equity or stock options) as a paid consultant, speaker or as a member of an advisory committee for the following companies:

  • EBMed
  • MD Executives

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.

Insurances Accepted

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

Ratings & Reviews

4.8 out of 5

50 ratings, 10 reviews

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

Search reviews
    5 out of 5 stars
    Reviewed on 5/11/2026

    Everything went well, The doctor was very nice and knowledgeable about everything he talked about to me. And if I have to go back to him I will. GREAT DOCTOR and THE PEOPLE WHO WORK FOR HIM ARE ALSO THE BEST.Thank you.

    5 out of 5 stars
    Reviewed on 5/4/2026

    Dr Sleiman was very informative somewhat friendly. He answered all my questions with ease and I felt very comfortable.

    5 out of 5 stars
    Reviewed on 5/4/2026

    Dr. Sleiman was able to diagnose me when no one else could. On top of that, he is friendly and took time to listen to all of my concerns.

    5 out of 5 stars
    Reviewed on 4/13/2026

    Great Doctor

    5 out of 5 stars
    Reviewed on 4/7/2026

    We could not have been happier with all of the doctors that we met with and their care and concern

    5 out of 5 stars
    Reviewed on 3/24/2026

    Based on a recommendation of another of his patients, I had the highest expectations of Dr. Sleiman and they were totally fulfilled. He is eminently knowledgeable, was efficient and thorough with his knowledge of my case and pleasant to interact with!

    5 out of 5 stars
    Reviewed on 3/13/2026

    Dr Kontak always is extremely patient and easy to communicate with and provides excellent patient care

    5 out of 5 stars
    Reviewed on 2/27/2026

    Dr. Joseph was easy to talk to too and showed compassion and concern.

    5 out of 5 stars
    Reviewed on 2/16/2026

    Dr. Sleiman heard all my concerns and addressed them. His after visit notes were impressive. I had a clear detailed plan to follow when I left the office and I felt reassured that I was in good hands.

    5 out of 5 stars
    Reviewed on 2/3/2026

    I left my appointment with Dr Slieman very hopeful and and a little warm and fuzzy.