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Department Internal Medicine and Geriatrics
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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About Daniel Sullivan, MD

Daniel Sullivan, MD, has an interest in Preventive Care and Wellness, as well asĀ in improving the quality of life for older adults.
Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Residency - Albany Medical Center
Internal Medicine
Albany, NY USA

Internship - Albany Medical Center
Internal Medicine
Albany, NY USA

Medical Education - New York Medical College
Valhalla, NY USA

Undergraduate - Williams College
Williamstown, MA USA


  • Internal Medicine

Specialty Interests

Primary care promotion as a career, wellness

Research & Publications

Research & Publications

See publications for Daniel Sullivan, 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

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 9/19/2023, Dr. Sullivan 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

212 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
4.9 out of 5
Explains 4.8
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

61 Patient Comments

Reviewed on Aug 24, 2023

Wonderful doctor

Reviewed on Aug 23, 2023

Dr. Sullivan is simply outstanding. He's patient, listens, explains and treats not only the malady but is extraordinary compassionate and respectful. Just amazing!

Reviewed on Aug 21, 2023

Dr. Sullivan was among the very best clinicians I have encountered in my many years of medical visits. I greatly appreciated his medical acumen and knowledge as well as his kindness and care. I'd love to have him as my internal medicine doctor in my home town! Absolutely top notch.

Reviewed on Aug 21, 2023

My three days of consultations organized and results reviewed and interpreted by Dr. Sullivan were more than worth my travel from out of state and hotel stay in Cleveland. Should I need second opinions and reviews in future, I will head straight for the Clinic

Reviewed on Aug 17, 2023

Great doctor, enjoyed talking with him

Reviewed on Aug 17, 2023

Dr Sullivan , comes prepared and is a good listener and communicator of plan of action

Reviewed on Aug 7, 2023

This experience was exceptional. Dr Sullivan is a one of a kind doctor. He listens, shows empathy, and is knowledgeable. There have been many doctors I have seen at this hospital and I am so fortunate to have him as my doctor.

Reviewed on Aug 7, 2023

Dr Sullivan is excellent. He listened to my current issues and contacted the team that was going to be seeing me regarding my heart follow up and my Breast issues follow up. Dr Sullivan seemed to truly care for me and saw that this time I came In a wheelchair due to severe back pain and leg pain. He had me seen by the Spine Center and Dr. MEKHAIL In pain management. Dr Sullivan said I can return to see him at the end of the week before I make the 7 hour car trip home. I was pleased that he would squeeze me Into his tight schedule at the end of all my appointments at CCF.

Reviewed on Aug 7, 2023

DR MIHALJEVIC, DR SULLIVAN and SEAN HARRISON were all fantastic in setting up all my needed appointments during the week of my heart tests. Seemed liked they truly cared for my health issues and wanted me to see the best doctors while I was at CCF.

Reviewed on Aug 2, 2023

Thank you Dr. Sullivan for all your help.

Reviewed on Aug 2, 2023

The doctor was wonderful and I had so far wonderful experience

Reviewed on Jul 17, 2023

Dr Daniel Sullivan was EXCELLENT!!

Reviewed on Jul 11, 2023

Dr. Sullivan is top notch, he provides excellent care. He is considerate, informative and responsive.

Reviewed on Jul 10, 2023

Allison with Dr. Sullivan is the most amazing person. She is always so kind and very helpful. She is also very patient and efficient.

Reviewed on Jul 10, 2023

Dr. Sullivan is the most amazing general practice physician I have seen. He is genuinely concerned and very attentive. He listens and he is never in rush. He is easy to talk with and explains everything in understand terms. He truly is the best there is

Reviewed on Jun 29, 2023

Wonderful doctor, so easy to talk to,so informative.

Reviewed on Jun 29, 2023

Dr Sullivan is patient wise and empathetic

Reviewed on Jun 21, 2023

Dr Sullivan is a compassionate provider with thorough thought processes and ability to explain my issues, cusses and possible treatment providers well.

Reviewed on Jun 15, 2023

Dr Sullivan is AMAZING

Reviewed on Jun 15, 2023

I cant say enough about how amazing Dr Sullivan is

Reviewed on Jun 15, 2023

Dr Sullivan is the best

Reviewed on Jun 15, 2023

Dr. Sullivan is a doctor that really cares for the wellbeing of his patients

Reviewed on Jun 14, 2023

Dr. Sullivan is a fabulous physician. He listen carefully to my medical concerns and quickly provided a diagnosis and treatment options.

Reviewed on Jun 12, 2023

Dr. Sullivan was awesome. He never seemed like he was in a rush and was very thoughtful and professional in his investigation of my symptoms. When we concluded he made it clear we would continue to investigate and that he would remain active in my case. I look forward to continuing to work with him.

Reviewed on Jun 6, 2023

Dr. Sullivan paid attention to the detail of my visit and explained everything very clearly. He was genuinely interested in helping to find the root cause of my symptoms

Reviewed on Jun 6, 2023

Dr Sullivan was amazing. I immediately felt like I was at the right place to assess whether or not I had any kind of problems. All of the rest of the doctors were equally great. Very happy that I came to Cleveland Clinic.

Reviewed on May 30, 2023

Dr. Sullivan might be the nicest person I have ever met. That he is that nice, and is also a doctor beggars belief. The quality of care I got from him not only promises to solve or at least ease an intractable chronic illness, his bedside manner helped me to let go of some damaging ideas I had about my relationship to illness more generally. What a mentsch.

Reviewed on May 24, 2023

The level of compassionate care & genuine interest in finding a solution to my medical issues is second to none. Dr. Sullivan is an incredible human & I feel wildly fortunate to be his patient.

Reviewed on May 17, 2023

Scheduling for a visit is taking far longer than Dr.Sullivan indicated. Scheduling staff said they were short handed. Consulting physicians should be made aware of the delay to provide realistic expectations to patients.

Reviewed on May 10, 2023

As noted in my previous comments, the Cleveland Clinic experience was like nothing we have ever experienced in a large health care facility. Dr. Sullivan walked us from the examination room to the lab and waited with us in line to make sure we got there before It closed. Unbelievable.

Reviewed on May 9, 2023

I'm bessed to have Dr. Daniel Sullivan in my life

Reviewed on Apr 27, 2023

There should be a higher category, perhaps excellent, for Dr.Sullivan and his staff. The level of care is outstanding. Dr.Sullivan is patient, understanding, knowledgeable, and friendly. He listens intently and looks at me while talking. I am grateful for his excellent care.

Reviewed on Apr 20, 2023

Amazing, I wish there were more doctors like Dr Sullivan!

Reviewed on Apr 19, 2023

Dr Sullivan is wonderful at what he does -- doing intake appointments for new patients at the National Consultation Service. He was kind, compassionate, clear in his explanations, and thorough in covering everything that was important to me. He is really great.

Reviewed on Apr 19, 2023

Outstanding provider, staff, and technology.

Reviewed on Apr 13, 2023

Dr. Sullivan should serve as the model for every physician. His standards of caring , being engaged with the patient, his extraordinary comprehension of medicine and drugs along with his common sense approach are unmatched. He is proactive and I feel so very blessed to be able to say he's my doctor.

Reviewed on Apr 5, 2023

Dr. Sullivan was very reassuring and positive, which really meant a lot after dealing with years of pain.

Reviewed on Mar 24, 2023

Dr. Sullivan is both warm and thorough. He gave me considered advice regarding an upcoming trip to Asia, was deeply informed about the current state of public health recommendations, and showed his consistent holistic appreciation of my overall health status.

Reviewed on Mar 22, 2023

Dr. Sullivan is very professional, attentive, and tactful. He makes every visit very smooth, he is very complimentary and encouraging. He is one of the best doctors I was seen by at the Cleveland Clinic.

Reviewed on Mar 6, 2023

Dr. Sullivan is both knowledgeable and sincere.

Reviewed on Mar 1, 2023

Dr Sullivan was excellent

Reviewed on Feb 24, 2023

Excellent doctor

Reviewed on Feb 22, 2023

Such a wonderful Dr. We had a great experience

Reviewed on Feb 9, 2023

Dr. Sullivan is an excellent Doctor. He listened carefully to my concerns and provided a plan on how we will address these issues.

Reviewed on Feb 3, 2023

Dr. Sullivan was fabulous. He listened carefully to my concerns. He was kind and payient.

Reviewed on Feb 3, 2023

It was wonderful to meet with Dr Sullivan in person

Reviewed on Jan 24, 2023

Dr. Sullivan is the best doctor I have ever had... And I've had a lot of them! His care and concern is always very evident and I leave appointments feeling heard, valued, and hopeful.

Reviewed on Jan 24, 2023

Dr. Sullivan great he listened to everything I had to say and took notes. He was very pleasant to talk to and it seemed like he cared.

Reviewed on Jan 23, 2023

Dr Sullivan is my PCP. I was concerned years ago when Dr Mayock retired, that I wouldn't find another provider that had such a great "bedside manner". But Dr Sullivan stepped In seamlessly, and I now have a long-term relationship with him. He is teaching me ways to stay healthy, he treats me when I'm sick and helps me get more advanced care if I need it. I trust him with his guidance and care for my health and well-being.

Reviewed on Jan 16, 2023

Dr. Sullivan made me feel as though I was the only person there who needed medical attention. He made sure I knew I was in good hands.

Reviewed on Jan 16, 2023

Great doctor !! Listen to my health concerns made me feel at ease . Would highly recommend

Reviewed on Jan 13, 2023

Dr Sullivan was amazing.

Reviewed on Dec 22, 2022

Dr Sullivan was very compassionate and kind and seemed genuinely concerned about my health issue.

Reviewed on Dec 22, 2022

Dr Sullivan as also amazing. He listened to the issues I presented and we discussed options on how to followup. Dr Sullivan clearly showed experience and expertise

Reviewed on Dec 20, 2022

I was impressed that Dr. Sullivan remembered that I have a dog, and asked about her.

Reviewed on Dec 19, 2022

Dr. Dan Sullivan is an outstanding doctor. He shows professionalism and concern for his patients.

Reviewed on Dec 15, 2022

My interaction with Dr. Sullivan were quite productive. He showed compassion for my condition and had great "bedside manners."

Reviewed on Dec 6, 2022

Dr. Sullivan was very pleasant and listened intently to what I had to say.

Reviewed on Nov 16, 2022

Dr. Sullivan was thorough, patient, engaged and caring.

Reviewed on Nov 2, 2022

Dr. Sullivan is an amazing physician. He is a good listener and makes excellent suggestions. I feel good about the care I am receiving from him. Thank you!

Reviewed on Nov 2, 2022

Dr. Sullivan is an amazing physician. He is an excellent listener and is extremely courteous. He also has a good sense of humor and is good at putting the patient at ease. He offers good explanations and proposes good solutions and advice. I can't say enough good things about him.

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