What patients are saying
Overall rating
4.74
Average wait time
4.72
Bedside manner
4.74
“super attentive and focused on what I said, ran more than one test to rule out anything serious, overall really friendly and great”
Angela P.March 9, 2026
“I was seen right away and my entire experience was excellent. The doctor was very thorough and thoughtful. He explained everything very clearly. As opposed to a large group practice, I felt that I received very individualized care. Very pleased overall!”
Michael G.December 23, 2025
About Dr. Mark Seldon
Dr. Mark Seldon is a thorough, attentive cardiologist treating patients in New York City and the surrounding communities. His primary goal as a practitioner is to provide excellent care to each of his patients. He holds certification from the American Board of Internal Medicine in internal medicine and cardiovascular disease. He is also a member of the American College of Cardiology.
In order to pursue his medical degree, Dr. Seldon attended the Mount Sinai School of Medicine. He continued his medical education at New York University, where he received residency training. Dr. Seldon has also completed a fellowship program at the Montefiore Medical Center.
Patients visiting Dr. Seldon can receive a full range of medical services. He provides cardiac catheterization, exercise stress testing, echocardiograms, peripheral duplex scanning, and event monitoring. Treatment is also available for high blood pressure, chest pain, fainting, and congenital heart disease.
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Medicare
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Office location
Education and background
Practice names
Hospital affiliations
- NYU Langone Health
Board certifications
- American Board of Internal Medicine
- Cardiovascular Disease (Internal Medicine)
Education and training
- Medical School - Icahn School of Medicine at Mount Sinai, Doctor of Medicine
- New York University (Residency)
- Montefiore Medical Center (Fellowship)
Professional memberships
- American College of Cardiology
Awards and publications
- "Serious Arrhythmias During Pregnancy"
Languages spoken
- English
Provider's gender
Male
NPI number
1174515571
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.74
Wait time
4.72
Bedside manner
4.74
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
776 reviews
Most relevant
Very thorough doctor and ultrasound technician. Great visit and guidance provided based on reason for visit.
July 21, 2025Barbara M.Verified patient
Wonderful experience especially for the first time making an appointment through Zocdoc!
September 22, 2025Ibelia J.Verified patient
Dr. Seldon was friendly, and listened well. I received a very thoughough examination and was very happy with his services.
February 6, 2024Robert M.Verified patient
Doctor was very patient and was listening to my concern and answer all questions. Front desk was professional as well
July 12, 2024Rafael B.Verified patient
I liked Dr. Seldon. He was personable, patient and intelligent. He gave me good advice.
September 15, 2025Natasha K.Verified patient
It was a god visit. I would use this office again in the future if needed.
September 22, 2025Jennille C.Verified patient
I was seen right away and they ran lots of tests on me and explained everything I would recommend this cardiologist doctor
March 21, 2022Victoria F.Verified patient
Doctor Seldon is super nice, professional kind and wisdom.
The best doctor I had in past 5 years in USA.
May 13, 2024Xiaoyu D.Verified patient
Dr. Seldon was very polite, kind and helpful. Excellent bedside manner.
September 30, 2025Courtney E.Verified patient
I went for a heart check up for the first time due to my age and stress level it was a very good experience.
Thank you!
July 16, 2021Kate E.Verified patient
Dr Seldon is absolutely phenomenal! He is highly educated as well as professionals. I would HIGHLY recommend him!
September 29, 2022Nina L.Verified patient
Excellent doctor, takes time to listen, ECG and complete heart ultrasound done at the time of consultation.
November 11, 2023Vincent D.Verified patient
Just very short and sweet. I have another follow up appt. Very thorough. Personable. Focused
July 29, 2024Randee L.Verified patient
Dr. Seldon is always knowledgeable and great bedside manner. Also a great visit experience at his office
August 8, 2023Christine D.Verified patient
Very professional, gets right to the point; received wrong diagnosis from another doctor . Very happy I went here
June 3, 2019Joel G.Verified patient
The Doctor was absolutely impressive, in no rush, and took the time to listen. Thank you I feel satisfied.
December 5, 2022William J.Verified patient
Dr mark seldon helped me figure out what was wrong and tries his best to do all the tests possible which is nice
October 12, 2021Jahaan O.Verified patient
Everyone in the office was really nice and Dr. Seldon has great bedside manner.
April 1, 2025Initials hidden
The Dr. was wonderful, the physical office leaves needs a major renovation
May 22, 2025david I.Verified patient
He was very easy to talk to and his staff was very friendly. I also didn't have to wait long before my appointment.
February 9, 2015Initials hidden
Professional, considerate, careful, and patient. The best doctor I saw in New York since I came here in 2014.
July 18, 2022Jacob Y.Verified patient
Dr, Mark is kind polite and takes time to listen and ask questions.
I’m pleased that I made this appointment.
October 26, 2021Elizabeth G.Verified patient
Experienced doctor who understands the issue straight away and also performs necessary exams, only as required
September 24, 2021Rajesh P.Verified patient
Dr. Seldon and his staff were very professional and knowledgeable. Would definitely recommend this practice.
December 13, 2021Karl V.Verified patient
Staff was friendly and communication clear. I got everything checked on consultation.
September 16, 2024Kimberly N.Verified patient
Every service complete and every person that handle me was amazing and so informative.... everything was great
More than 1 year agoTatiana C.Verified patient
Highly recommend this cardiologist, he explained what was likely going on with me and was kind and respectful.
February 2, 2012Initials hidden
Seen quickly, and Dr. Seldon was thorough! Good experience.
August 20, 2025Jason R.Verified patient
Great doctor and office they make me feel important and take care of me fast
December 23, 2024Shawnnell J.Verified patient
Feels like a solid doctor who has a lot of experience.
September 27, 2025Matthew P.Verified patient
Genuine & went above what I was there for. Communicated very clearly!
March 31, 2025Anngilee M.Verified patient
Dr. Seldon has great bedside manner and his office staff made the effort to accommodate our schedule.
October 22, 2021Johanna B.Verified patient
Dr. seldon has been my doctor for many years. He takes the time to explain and answer questions.
December 21, 2022Angela P.Verified patient
Doctor is extremely nice, patient, good with explanations. Would happily recommend.
February 27, 2024Rebecca A.Verified patient
kind doctor, listens well, interested in helping figure out what's wrong, nice staff too!
July 16, 2023Anna V.Verified patient
Dr. Seldon is pleasant, caring and straightforward. Precisely what is missing in most physicians.
November 19, 2014Initials hidden
Great doc very thorough and knowledgable staff is great also great all around highly recommended
August 16, 2010Frank N.Verified patient
This doctor is very thorough in his approach. Would recommend
More than 1 year agoInitials hidden
First nice and clean office very friendly staff, the Dr was great I strongly recommend him
September 29, 2022Hana S.Verified patient
Very good doctor ! He answered all my questions even I don't speak a perfect english .
June 25, 2023Ana H.Verified patient
Me encantó la atención del Doctor muy profesional gracias.
Less than 1 year agoInitials hidden
Good appointment, got the tests needed and answers for next steps
December 18, 2024Chloe M.Verified patient
Great doctor . He Answer all my questions even If I don't speak too much english .
June 25, 2023Ana H.Verified patient
Took me right away and took his time breaking down my consultation. I would recommend highly
July 10, 2021Tony T.Verified patient
Good clear advice
Took time
Cery much down to business but very courteous
May 7, 2024Jacob P.Verified patient
Appointment went well. Very little wait time with clear communication.
More than 1 year agoInitials hidden
Very great staff and Dr. in general great place to get your Care.
September 30, 2024Jean C.Verified patient
Dr Seldon is concerned about how you are feeling and seeks the best possible treatment!
May 5, 2022Initials hidden
It was a good visit he made me feel comfortable and explained what was going to be done.
More than 1 year agoEdwin O.Verified patient
Visit was quick and to the point great communication from the staff.
May 22, 2024Jahlaani C.Verified patient
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How soon can I make an appointment with Dr. Mark Seldon?
Generally, Dr. Mark Seldon has appointments available on Zocdoc within 1 week. You can see Dr. Seldon's earliest availability on Zocdoc and make an appointment online.
Is Dr. Mark Seldon accepting new patients?
Dr. Mark Seldon generally accepts new patients on Zocdoc. You can see Dr. Seldon's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Mark Seldon accept my insurance?
Choose your insurance plan to verify if Dr. Seldon is in-network.
Can I make an appointment with Dr. Mark Seldon online?
Yes, you can make an appointment online with Dr. Seldon using Zocdoc. It’s simple, secure, and free.
Which hospital is Dr. Mark Seldon affiliated with?
Dr. Mark Seldon is affiliated with NYU Langone Health.
What practice does Dr. Mark Seldon work with?
Dr. Mark Seldon works with Mark A. Seldon, MD, F.A.C.C..
Where is Dr. Mark Seldon's office located?
Dr. Mark Seldon's office is located at 345 E 37th St, New York, NY 10016.
Which board certifications does Dr. Mark Seldon have?
Dr. Mark Seldon is certified by American Board of Internal Medicine and Cardiovascular Disease (Internal Medicine).
What are common reasons for patients to see Dr. Mark Seldon?
Dr. Mark Seldon frequently sees patients for Cardiology Consultation , Cardiology Follow Up , High Blood Pressure / Hypertension, New Patient Visit, and Ultrasound. You can see other visit reasons for Dr. Mark Seldon on their profile.
What languages does Dr. Mark Seldon speak?
Dr. Mark Seldon speaks English.
How do patients rate Dr. Mark Seldon in reviews?
776 patients have reviewed Dr. Mark Seldon. The overall rating for this doctor is 4.74/5. They have a 4.74/5 rating for bedside manner and a 4.72/5 rating for wait time. You can read individual reviews and ratings on their profile.