Thomas Callahan, MD

Humbling, reassuring and awesome to be in the super skilled, caring and dedicated hands of this phenomenal(!) team led by Dr Callahan. Deeply grateful.

Dr Callahan took a completely relaxed position while speaking with me. He never once seemed in a hurry to get anywhere else. His full attention was on answering my questions and concerns. He left once to consult with another surgeon about my vein blockage and came back with an immediate answer. He explained everything in detail along with the percentage chances of any issues. He also told me plans to mitigate those possible issues. I felt completely at ease in his care.

I am fortunate to be a patient of Dr Thomas Callahan. He is highly knowledgeable, intelligent and caring Doctor.

Dr Callahan and team are genuinely care about my health concerns. I came with hope and I found it, because I knew I will see the best Doctor and he will find a right treatment for me.

Dr Callahan has significant knowledge and experience with excellent practical application of both. Great personality and bedside manner, easy to talk to and spent quality time getting to know me, will definitely be back to see him and have already recommended him to family and friends

Dr. Callahan and his team are great!

I travel from PA because of the high standard Cleveland Clinic has.

Dr. Callahan is highly skilled technically and is equally known for his compassionate care and excellent bedside manner.

Very good experience with Dr Callahan

Dr Callahan is the most knowledgeable and caring Dr. He is so well prepared and provides all relevant data on his computer screen. He explains the details in a user friendly way. I TRUST HIM and feel strongly he has my interests as his own. What a leader.

Dr Callahan is truly special. His RN Shannon is amazing. What a team.

Dr. Callahan and his team are the best . And the Tech I think her name is Ashley she was fantastic. Can''t think of the word to describe how good and caring she treated me, when all Michigan tech''s and heart doc''s said nothing wrong your dyeing . She plotted the lead failure going back 2 years and helped me with It saving my life, her and DR Callahan

Dr. Callahan was excellent! He is friendly, caring, knowledgeable, explained everything very clearly, asked if I had any questions and answered extremely well. I would highly recommend him to others.

Dr Callahan''s Staff are the best. What a team.

Dr. Callahan is simply the best physician I have ever met. He is amazingly astute and experienced, deeply committed to patient well-being, and an active and sensitive listener. Superb!

A virtual appointment for patients who live far from Ohio is a blessing. Thank you, Dr. Callahan and Cleveland Clinic, for making these important medical encounters possible.

Dr Callahan listened to my concerns, he was patient, friendly, and professional

It was easy to schedule the1st appointment with Dr Callahan and he was also very responsive to follow-up messges via the office. When we met, he was so thorough and generous with his time. It felt like a discussion that probed deeply into the problems, various solutions and next steps to arrive at the best gameplan.

Dr. Callahan was very thoughtful and thorough. He took the time to listen to me and explain his thoughts and recommendations. His expertise and compassion was appreciated.

Dr Callahan spent time answering every question and giving detailed explanations of all the options, the benefits and risks of each, and the testing needed to determine the best treatment. Not once did I feel rushed or as if he needed to be anywhere else. He was completely relaxed the entire appointment and put me at ease. He walked with me to the nurse and went over the device changes he wanted her to complete.

Dr. Callahan was outstanding. Spent 45 minutes with me and answered all questions of me and my wife. Went to great lengths to explain options and his recommendations. Extremely pleased with all aspects of our Cleveland Clinic visit.

Dr. Callahan is a very talented doctor as well as a caring and patient person.

Dr. Callahan was very kind very patient and very thorough explaining his plan of care for me. I feel confident that I am in good hands

When I was referred to Dr. Callahan from Dr Santangeli Dr. Callahans office called me the same Day to set up a video visit. I was very pleased with that quick response

Excellent care by Dr. And staff. Everyone was easy to talk to and questions were answered. The Clinic has provided the best care I have ever received.

Dr Callahan is absolutely amazing. He was well prepared and answered all my questions with clarity and professionally. He is the BEST.

Dr Callahan and staff are caring & excellent!

Dr. Thomas Callahan is remarkable. I am thrilled that he is my doctor.

Excellent experience with the clinic and the doctor. Thank you for your professionalism.

Dr.Callahan is amazing, compassionate and so competent. I appreciate him so much, his team also...

Dr Callahan was pulled away for an emergency in the lab but waiting an hour for him was perfectly understandable and he apologized immediately whenever came in the room. He was extremely informative and made sure I understood all of the results of what he saw

Dr. Callahan is very busy but worth the wait.

My first experience with Cleveland Clinic was in 2008 when took my father to the Clinic for his second heart valve replacement. I was very impressed. My wife had thyroid cancer and needed an Endocrinologist and we chose Cleveland Clinic, My local cardiologist in Kalamazoo, MI referred me to Dr. Callahan. Many procedures later my whole family is grateful for the care. Not convenient for us, but worth the 5 hour drive. Thank you.

Dr Callahan was extremely well prepared and provided a clear plan to address my conditions. He had his RN followup the next day for scheduling procedures. He is truly the best. He linked his computer screen on Zoom to show me my Device Data and charts etc. Great experience.

Dr Callahan is an outstanding Cardiologist. On a scale of 5, he is a 10.

Telemedicine is a very productive process. Saves everyone time. Dr Callahan had all my medical information available prior to the call. Very impressive. Thanks Very Much.

Dr Callahan was very thorough on explaining on what he would have to do with my problem If he would have to proceed with my surgery.

Everyone was very helpful and friendly. The doctor was very good at exposing my options and gave a thorough evaluation.

Dr. Callahan is an excellent listener and provides clear guidance on my medical options. He advocates for his preferred option but states whether other options are reasonable choices for the patient.

I really appreciate Dr Callahan's personal sensitivity to addressing my particular situation. He was thorough, answered concerns about my situation, and helped me feel confident in what he would as the surgery progressed. I very much appreciate his dedication to help me through a complicated situation. Thanks a lot!

Always a pleasant visit. Dr. Callahan is soft spoken, listens and explains everything.

Dr Callahan is totally TOP NOTCH! He explains everything in great detail and doesn't rush through it. He's excellent!!!

I greatly respect and appreciate Dr. Callahan. I appreciate that he takes time to answer all of my questions, offers guidance for path forward, and explains what is going on with my device and heart.

On my team at Cleveland Clinic, I have four Cardiologists. This doctor is, by far, my favorite. He explains things so well. He is very kind . I felt like I could trust him.

Although, it was difficult to get into this doctor, it was worth the wait to see him. He listened to me. He let me have a say in my treatment. I really appreciate the respect and kindness he showed.

The doctor was exceptional, although I treated previously at the University of Michigan, he was clearly informed of my treatment and was up to speed as if he had been my treating physician. His understanding of the Issues presented was simply was amazing and put to ease any concerns of how to proceed going forward.

Dr. Callahan was very conscientious, treated us with kindness and understanding, gave clear explanations, listened to my comments and questions and did not make us feel rushed. I felt I would be in very good care.

Dr Callahan is amazing. I trust him totally. And he is so detailed and knowledgeable about my health and care.

Dr Callahan was excellent. He took the time to explain everything and kept me fully informed during the procedure .

Dr. Callahan is very caring and takes the time to explain and answer questions.

Dr. Callahan was, as always, compassionate, attentive, and took the time to explain his plan for my care going forward. He is a very reassuring care giver who inspires complete confidence.

Dr. Callahan is an exceptionally kind, compassionate, and dedicated physician. I cannot recommend him highly enough.

Enjoy and trust the doctor and his staff.