John Ader, DO
Rheumatology
Highlights
Age Groups Seen
- Adult
Languages
- English
Gender
MaleEducation & Board Certifications
Education
- Fellowship: University of Texas Southwestern Medical Center, 2008
- Residency: Genesys Regional Medical Center, 2003
- Medical Education: A.T. Still University -Kirksville College of Osteopathic Medicine (Missouri), 2000
Board Certifications
- Rheumatology: American Osteopathic Board of Internal Medicine, 2009
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 2026-09-30, Dr. Ader 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.
Insurances Accepted
Reviews
4.9 of 5 stars
86 Ratings, 29 ReviewsThe 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.
- 5 out of 5 starsReviewed on 10/23/2026
Dr. Ader is a caring, knowledgeable physician who always takes the time during our appt to answer my questions and thoroughly explain next steps. I am so pleased with the care I am receiving.
- 3 out of 5 starsReviewed on 9/28/2026
Nice doctor but I realized he didn''t introduce himself and didn''t ask any history questions or deeper interest .
- 5 out of 5 starsReviewed on 9/3/2026
Dr Ader always takes what I say in consideration and is an excellent listener. He is courteous and respectful.
- 5 out of 5 starsReviewed on 9/3/2026
Dr. Ader was amazing. He was helpful, compassionate and I felt very heard about my symptoms.
- 5 out of 5 starsReviewed on 9/3/2026
Technology is very difficult for me. This system has been easy to navigate once my daughter set it up for me. I was able to complete my last visit by myself. I am still having a challenge getting my labs that were done locally to be sent to Dr Ader. Hopefully I can get it figured out soon.
- 5 out of 5 starsReviewed on 8/31/2026
The doctor also recommended blood work and x-rays and I''m glad he did it eased my mind and I would recommend the doctor to anybody
- 5 out of 5 starsReviewed on 8/31/2026
Dr. Ader listened to my concerns and explained options for me.
- 5 out of 5 starsReviewed on 8/31/2026
My doctor was very caring and kind. He made sure he listened to all my concerns and took the actions he needed to answer those concerns or get me where someone could.
- 5 out of 5 starsReviewed on 8/31/2026
The doctor was very thorough and understanding and answering my questions about arthritis
- 5 out of 5 starsReviewed on 8/5/2026
Dr John Ader listened and it seemed like he genuinely cared. I think he''s a wonderful asset for Cleveland clinic.
- 5 out of 5 starsReviewed on 7/29/2026
While I am grateful Dr Ader was able to continue as my doctor when Saltzer closed, I miss the in person visit very much
- 5 out of 5 starsReviewed on 7/29/2026
Always had good visits with Dr. Ader, he has always answered my questions professionally. I have been with him since 2016.
- 5 out of 5 starsReviewed on 7/29/2026
Dr Ader was kind, caring, invested in assisting me and truly listened to what I have been experiencing. I am thoroughly impressed and grateful for Dr Ader
- 5 out of 5 starsReviewed on 7/29/2026
Dr. Ader is always caring, knowledgeable, and listens to my concerns. He includes my concerns in treatment options and makes me feel heard.
- 5 out of 5 starsReviewed on 7/29/2026
Dr Ader is a wonderful doctor. He is genuinely interested in my care and is very kind.
- 5 out of 5 starsReviewed on 7/1/2026
Dr. Ader has always been able to help me understand my condition and what the treatments options for it are. I feel like I''m making informed decisions concerning my care as opposed to just being told what I have to do.
- 5 out of 5 starsReviewed on 7/1/2026
He has been my doctor for 13 years and I really like him
- 5 out of 5 starsReviewed on 7/1/2026
Dr answered all my concerns. Very professional and informative
- 5 out of 5 starsReviewed on 6/4/2026
After years of bad experiences with doctors, I was going to not continue. He was quite possibly the most compassionate and thoughtful doctor I have worked with in a very long time. He is thorough, thoughtful, and attentive.
- 5 out of 5 starsReviewed on 6/4/2026
I have been working with Dr Ader for awhile, in person and online, and he has always been courteous, personable and professional
- 5 out of 5 starsReviewed on 5/15/2026
I put good on video visit vs in person only because in person is always more personal but Dr. Ader is amazing either way
- 5 out of 5 starsReviewed on 5/6/2026
Dr. Ader was great.
- 5 out of 5 starsReviewed on 5/6/2026
Dr Ader was fantastic. Spent a great deal of time talking through my issues.
- 5 out of 5 starsReviewed on 4/15/2026
Dr Ader was great. I think patients primarily want to feel heard and they want to have a clear plan of action. Dr Ader did both. He was very thorough and spent a lot of time with me. He was also, just a nice guy, and very professional at the same time. I would definitely recommend him.
- 5 out of 5 starsReviewed on 4/15/2026
Dr.Ader gives clear information and explanations
- 5 out of 5 starsReviewed on 4/15/2026
Dr Ader is the best Rheumatologist I have ever had.
- 5 out of 5 starsReviewed on 4/8/2026
I''ve seen Dr. Ader for over ten years now, before he came to the Cleveland Clinic. I think think he is one of the most thoughtful and helpful doctors I''ve had.
- 5 out of 5 starsReviewed on 4/8/2026
Dr. Ader always listens to my concerns and questions and helps me find a good solution to my healthcare plan.
- 5 out of 5 starsReviewed on 4/8/2026
Doctor was good , he was the only one that I spoke with. They had us sign in 15 minutes early and then we had to wait and wait until the doctor came on.