Donald Hammer, MD
Primary Location
Cleveland Clinic Main Campus
- Appointment:
- 216.444.6697
- Desk:
- 216.444.5683
- Fax:
- 216.445.6167
Treatment & Services
- Aorta Center
- Cardiology
- Cardiovascular Medicine
- Cardiovascular Medicine Department
- Clinical Cardiology Section
- General Cardiology
- Perioperative Cardiac Management
Insurance
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View All PlansAbout Donald Hammer, MD
Dr. Donald Hammer is Director of Cardiology Surgical Services and a staff cardiologist in the Section of Clinical Cardiology, the Robert and Suzanne Tomsich Department of Cardiovascular Medicine, at the Sydell and Arnold Miller Family Heart, Vascular & Thoracic Institute. He is board certified in internal medicine and cardiology. Dr. Hammer's specialty interests are ischemic heart disease and perioperative cardiac management.
Dr. Hammer graduated summa cum laude from Case Western Reserve University (Phi Beta Kappa) with an undergraduate degree in chemistry. He received his medical degree from The Ohio State University College of Medicine, in Columbus, Ohio, where he was inducted in the Alpha Omega Alpha honor society. He completed his clinical internship and residency in internal medicine at The Ohio State University Hospitals, where he went on to receive a fellowship in cardiology.
Dr. Hammer served 10 years in the United States Naval Corps and retired as a Lieutenant Commander, U.S. Naval Medical Corps. He has had multiple academic appointments, which include Clinical Instructor in Internal Medicine at The Ohio State University Hospitals; Director of Education, Internal Medicine at the Naval Regional Medical Center at Camp Pendleton, CA; Assistant Clinical Professor of Medicine and Associate Medical Director of the Cardiac Transplantation Program at The Ohio State University Hospitals; Education Coordinator for Cardiology at Wright State University in Dayton, OH, where he was also Director of the Cardiology Fellowship Training Program; Director of the Echocardiography Laboratory and Chairman of the Cardiology Research Panel at Good Samaritan Hospital in Dayton, among others. In 1998, Dr. Hammer was appointed to the Cleveland Clinic Foundation as Director of Cardiology Surgical Services.
Dr. Hammer has long been involved in clinical studies on his specialty interests and heart related issues. His post basic research endeavors included high-energy phosphate analysis in dilated cardiomyopathy and CHF. He currently is the principal investigator on a retrospective comparison of second and third generation beta blockers and post-operative atrial fibrillation prophylaxis, and is a co-investigator on the safety and efficacy in low molecular weight heparin in selected patients post open heart surgery. Dr. Hammer has participated in many other clinical trials including the QUIET STUDY and in the GUSTO trials.
He has presented his research findings and addressed his specialty interests at many national conferences and symposia. He is the author or co-author of articles related to his work in leading publications, including Circulation, Heart, and the New England Journal of Medicine, to name a few. In addition, he has co-authored a chapter on endogenous inotrope in a medical textbook on Cardiotonic Drugs.
Dr. Hammer is Fellow in the American College of Cardiology and a member of the American Medical Association, the American Society of Echocardiography and the Medical Society of Northeastern Ohio.
Education & Professional Highlights
Appointed
1998
Education & Fellowships
Fellowship - The Ohio State University Hospitals
Cardiology
Columbus,
OH
1986
Residency - The Ohio State University Hospitals
Internal Medicine
Columbus,
OH
1981
Internship - The Ohio State University Hospitals
Internal Medicine
Columbus,
OH
1979
Medical Education - The Ohio State University College of Medicine and Public Health
Columbus,
OH
1978
Undergraduate - Case Western Reserve University School of Medicine
Chemistry
Cleveland,
OH
1974
Certifications
- Internal Medicine - Cardiovascular Disease
- Internal Medicine
Specialty Interests
General cardiology, heart disease, aorta disease, perioperative cardiac management
Research & Publications
See publications for Donald Hammer, MD.
(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 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 10/6/2023, Dr. Hammer 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.
314 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 | |
|---|---|---|
| Explains | 4.9 | |
| Listens | 5 | |
| Courtesy, Respect & Concern | 4.9 | |
| Patient Rating of Doctor | 4.9 |
67 Patient Comments
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Reviewed on Jul 10, 2024
It is always great to talk to Dr Hammer. He is thorough, checking all the test results and considerate entire health picture.
Reviewed on Jul 8, 2024
Dr. Hammer is one in a million!!! Such a caring and great physician.
Reviewed on Jul 1, 2024
Dr hammer is the best!!!
Reviewed on Jul 1, 2024
I love Dr Hammer
Reviewed on Jun 20, 2024
Dr. Hammer is the consummate professional. Will be SAD when he retires!
Reviewed on Jun 20, 2024
Dr Hammer is very competent and compassionate. Mixed feelings about him retiring as we are very happy with him.
Reviewed on Jun 5, 2024
The Doctors took excellent care of me!
Reviewed on May 30, 2024
Dr. Hsmmer has always been caring, informative, and put the time in to make sure that you knew he cared and you were able to ask your questions, get the information you needed.
Reviewed on May 21, 2024
I appreciated Dr. Hammer's thoroughness and the clarity of his explanations.
Reviewed on May 20, 2024
All experience with Dr. Hammer and his staff were very good.
Reviewed on May 15, 2024
I met Dr Hammer over 20 years ago when I was evaluating having my Mitral Valve Repair at the Clinic. I have spoken to him throughout the years and returned for a visit when my insurance permitted this (Medicare). THe only comment I can make is that it was not easy to hear him when he spoke in a very low voice. I highly respect and value Dr Hammer and hope that I will have the chance to see him again.
Reviewed on May 14, 2024
Dr. Hammer is the best!
Reviewed on May 14, 2024
Love Dr Hammer. He is so caring and professional. Listens and explains well.
Reviewed on May 7, 2024
Dr Hammer is one of the most caring doctors ever
Reviewed on May 3, 2024
Dr Hammer is outstanding!!!
Reviewed on May 1, 2024
Care provider was outstanding.
Reviewed on May 1, 2024
Dr.Hammer is so easy to work with! He has taken wonderful care of me!
Reviewed on Apr 29, 2024
I had a great visit with Dr. Hammer. Not only was he prepared and listened to my concern, but he is very well informed about the latest in care for a bypass patient with CAD. Very much appreciated the professional care that I recieved.
Reviewed on Apr 23, 2024
Dr. Hammer is an excellent doctor!
Reviewed on Apr 2, 2024
I was very pleased with how Dr. Hammer and his staff were able to schedule my visit.
Reviewed on Mar 29, 2024
My initial appt was scheduled 4 weeks after my surgery. I understand Dr hammer schedule is tight. After my follow with Dr Hammer I will be able to give a better review.
Reviewed on Mar 20, 2024
Dr. Hammer is a very caring provider with a magnificent knowledge of medicine and in other areas besides cardiology.
Reviewed on Mar 18, 2024
Dr. Hammer is a great heart doctor. I have seen him for several years and have had to have two open heart surgeries which he has planned. I wish I could thank him everyday for taking such good care of me.
Reviewed on Mar 18, 2024
First let me say that Dr Hammer is wonderful. He kept me alive twice, post elephant trunk procedures with 18 day stays in the hospital. I come from across the country every year for a post 2015 elephant trunk procedure check up. The last two years have been difficult to get scheduled. I am directed three months ahead to start my appointments. Which I do. This year the Cat scan was not scheduled. We had our appointment with Dr Hammer without the CAT so it had to be ordered and then another meeting with Dr Hammer. Adding nearly a week to my Holiday Inn expenses! I called numerous times and sent messages to the portal to get the echo scheduled ahead of time. I was told each time I was on the wait list. I arrived in Cleveland on Friday for my Monday appointment without being scheduled yet. Called two more times. Finally, I was given a last minute schedule in the basement with a student learning to do echoes. She did inquire for help. This was a very stressful experience. Last year was similar. This has been so unlike Cleveland Clinic in the past.
Reviewed on Mar 18, 2024
Dr Hammer is an awesome doctor. He has kept me alive during the two elephant trunk procedures. I was in the hospital 18 days each time with serious complications. He also follows up with me when I return home. I am so blessed to have him as my doctor.
Reviewed on Mar 8, 2024
Dr Hammer is an outstanding physician and I felt like he truly takes interest in me and my medical issue .
Reviewed on Mar 7, 2024
Dr. Hammer is the best. I guarantee your doctor hammer is the best and he breaks it down and explains it to you where you understand what he's talking about and what you're going through. He is the best
Reviewed on Feb 27, 2024
We were very pleased with dr Hammer.
Reviewed on Feb 26, 2024
Dr Hammer and his staff are absolute top shelf medical providers, and treasures. I would come from the other side of the world to see him. Thank goodness I only have to come from Florida to Cleveland Clinic Main Campus.
Reviewed on Feb 26, 2024
This is not hard. I freely recommend Dr Hammer for anyone needing cardiac care with any condition at any time.
Reviewed on Feb 19, 2024
Dr Hammer and his staff go above and beyond just their jobs they are truely amazing
Reviewed on Feb 19, 2024
I would recommend Dr Hammer to anyone he truely is one of a kind!!!!!
Reviewed on Feb 9, 2024
Excellent doctor. Gives excellent care and follow ups.
Reviewed on Feb 6, 2024
In my opinion there is no better doctor than Dr. Hammer. He cares for you as if you were family. He researches your file, thinks things through and explains thoroughly what his plan Is for your care. You couldn't hope for anything more, he Is an amazing brilliant doctor.
Reviewed on Feb 5, 2024
Dr. Hammer is an exception communicator He explained everything in detail and provided me with much information
Reviewed on Feb 5, 2024
Dr. Hammer is great, I have recommended him to other executives who have made appointments with him.
Reviewed on Jan 29, 2024
Always a pleasure to jeer with Dr Hammera very caring doctor
Reviewed on Jan 23, 2024
Always recommend Dr. Hammer for his forthrightness and knowledge and ability to communicate and careHe Is veriy impressive.
Reviewed on Jan 18, 2024
Dr Hammer was a caring and very professional cardiologist!
Reviewed on Jan 18, 2024
Love Dr Hammer
Reviewed on Jan 17, 2024
Best experience I ever had at doctors office from the receptionist to the nurse to the doctor to the echocardiogram the whole staff was awesome.
Reviewed on Jan 17, 2024
Dr Hammer is always very thorough, professional, and personable. I feel very confident with his treatment recommendations.
Reviewed on Jan 11, 2024
Dr Hammer and his staff are beyond excellent. I especially liked the fact that you got a secretary (Kevin) so you could help stretch Dr Hammer further. Dr Hammer is the best example of what Cleveland Clinic aspires to promote.
Reviewed on Jan 10, 2024
Dr Hammer is just great.
Reviewed on Dec 14, 2023
Great doctor, very helpful
Reviewed on Dec 13, 2023
Dr.Hammer is extremely thorough and professional every time we ( my husband and myself) have met with him. Thank You!!
Reviewed on Dec 8, 2023
Very impressed with Dr. Hammer's response to my situation and his pursuit of getting me the help I needed.
Reviewed on Dec 7, 2023
We love Dr Hammer. He is a God send.
Reviewed on Dec 7, 2023
Terrific experience. Dr Hammer is a rock star! So considerate abd kind
Reviewed on Dec 1, 2023
I have been battling heart disease since 1977. Dr Hammer saved my life in 1999 and has kept me alive and living to this day. He's the most competent, respectful, dedicated and caring doctor I've ever known. I literally owe him my life.
Reviewed on Nov 29, 2023
Dr. Hammer is the best!
Reviewed on Nov 29, 2023
Dr. Hammer is the best!!!
Reviewed on Nov 17, 2023
Dr Hammer provided excellent advice and explained reasons for his decisions. I look forward to seeing him again in 6 months.
Reviewed on Nov 16, 2023
Dr. Hammer is excellent. One of the very best.
Reviewed on Nov 16, 2023
Dr. Hammer is extremely knowledgeable and communicates in an easy to understand manner.
Reviewed on Nov 14, 2023
Dr. Hammer is an excellent doctor and cares very much about his patient.
Reviewed on Nov 10, 2023
We have been patients of Dr. Hammer since 2014 and now four other family members see Dr. Hammer in addition to two of our friends. Dr. Hammer is a wonderful doctor and he is the reason we tolerate the rudeness by the registration at labs etc
Reviewed on Nov 10, 2023
We will continue to recommend Dr. Donald Hammer
Reviewed on Nov 9, 2023
All Good: I like and respect Dr Hammer!
Reviewed on Oct 30, 2023
Dr Hammer was very patient and kind. He went above and beyond taking time to sit with us after hours to discuss the different possibilities of what might be going on with Alex.
Reviewed on Oct 26, 2023
I have an annual checkup with Dr Hammer, but your system does not allow appointments to be booked a year in advance. I was instructed to call on the first of each month to inquire if appointments were being taken for the month I needed (August 2023). After being told for several months to call back next month', I was finally able to book an appointment - but not until October 2023. My recommendation would be to allow established patients to be able to book their annual checkup 12 months in advance.
Reviewed on Oct 26, 2023
Dr. Hammer is exceptional in all aspects of patient care!
Reviewed on Oct 25, 2023
Dr. Hammer is outstanding. Very thorough. Tremendous expertise. Very caring.
Reviewed on Oct 19, 2023
Dr Hammer is outstanding. He put me at ease and I was very stressed about the procedure.
Reviewed on Oct 18, 2023
Very good visit easy kind Doctor was very concerned about my progress before my visit ended He asked if I had any questions He took care of
Reviewed on Oct 17, 2023
Dr. Hammer is an amazing doctor that is very attentive to my concerns and care.
Reviewed on Oct 17, 2023
Dr Hammer is EXCELLENT!