Dr. John S. Tsakonas, M.D., a graduate of the School of Engineering of Columbia University in New York, received his medical education from the State University of New York at Syracuse. He completed his internal medicine and cardiology training at the George Washington University Hospital, Washington, D.C.
Dr. Tsakonas is certified by the National Board of Medical Examiners, the American Board of Internal Medicine and the Subspecialty Boards of Cardiovascular Disease and cardiac CT angiography.
Dr. John S. Tsakonas, M.D., a graduate of the School of Engineering of Columbia University in New York, received his medical education from the State University of New York at Syracuse. He completed his internal medicine and cardiology training at the George Washington University Hospital, Washington, D.C.
Dr. Tsakonas is certified by the National Board of Medical Examiners, the American Board of Internal Medicine and the Subspecialty Boards of Cardiovascular Disease and cardiac CT angiography.
The reviews listed below were collected independently of Cardiovascular Consultants through rater8. Each review represents an authentic and verified patient experience.
My mother now 93, has been seeing Dr Tsakonas for years. He is always kind and understanding. The office staff is great, and Delfina is always very helpful.
(1 week ago)
Jun-2026
Great manner and interest in the details of my life. Took his time to listen and offer suggestions to my questions and concerns about my life while scheduling tests to look further into potential causes of mentioned symptoms
(1 week ago)
Jun-2026
Very thorough and knowledgeable
(1 month ago)
May-2026
Efficient and professional as always. Took his time and answered my questions.
(1 month ago)
May-2026
Excellent doctor, very thorough and direct and all of the staff are great!!
(1 month ago)
May-2026
None
(1 month ago)
May-2026
Dr. Tsakonas is an excellent doctor!!
(1 month ago)
May-2026
All the staff was nice and welcoming! My nurse was very comforting and made me feel safe while doing my stress test.
(1 month ago)
May-2026
I felt comfortable speaking with Dr. Tsakonas. I have a great amount of knowledge about all my health conditions, as I am well educated in the field of Clinical Psychobiology.
I can well understand why some patients may not feel that the Dr’s bedside manner is very warm & fuzzy. However, it simply tells me that he is serious about his work & very focused on ensuring he get all important patient information, so he can make the right treatment decisions & choices, going forward. Therefore, I appreciate his diligent attention to details. Full & complete knowledge of my health conditions and proper treatment are much more important to me than whether we have a warm & fuzzy, jolly conversation! Thanks!
(2 months ago)
Apr-2026
Doctor was very courteous and explained the diagnosis very clearly.
Dr. John S. Tsakonas, M.D., a graduate of the School of Engineering of Columbia University in New York, received his medical education from the State University of New York at Syracuse. He completed his internal medicine and cardiology training at the George Washington University Hospital, Washington, D.C.
He remained at George Washington as a Clinical Instructor of Medicine completing an extra year of invasive and interventional cardiology. Dr. Tsakonas is an Assistant Clinical Professor at UCLA, and is a member of the Attending Clinical Faculty in Cardiac Catheterization and Intervention at the Wadsworth VA Hospital in Los Angeles.
Dr. Tsakonas is certified by the National Board of Medical Examiners, the American Board of Internal Medicine and the Subspecialty Boards of Cardiovascular Disease and cardiac CT angiography. He is also a Fellow of the American College of Cardiology and Fellow of the Society of Cardiac CT.
My mother now 93, has been seeing Dr Tsakonas for years. He is always kind and understanding. The office staff is great, and Delfina is always very helpful.
Great manner and interest in the details of my life. Took his time to listen and offer suggestions to my questions and concerns about my life while scheduling tests to look further into potential causes of mentioned symptoms
Very thorough and knowledgeable
Efficient and professional as always. Took his time and answered my questions.
Excellent doctor, very thorough and direct and all of the staff are great!!
None
Dr. Tsakonas is an excellent doctor!!
All the staff was nice and welcoming! My nurse was very comforting and made me feel safe while doing my stress test.
I felt comfortable speaking with Dr. Tsakonas. I have a great amount of knowledge about all my health conditions, as I am well educated in the field of Clinical Psychobiology. I can well understand why some patients may not feel that the Dr’s bedside manner is very warm & fuzzy. However, it simply tells me that he is serious about his work & very focused on ensuring he get all important patient information, so he can make the right treatment decisions & choices, going forward. Therefore, I appreciate his diligent attention to details. Full & complete knowledge of my health conditions and proper treatment are much more important to me than whether we have a warm & fuzzy, jolly conversation! Thanks!
Doctor was very courteous and explained the diagnosis very clearly.