Marcus St. John, M.D., FACC, FSCAI, is an interventional cardiologist with Miami Cardiac & Vascular Institute and is the Medical Director of the Cardiac Catheterization Lab at Baptist Hospital. He specializes in diagnosing and treating a wide range of cardiovascular diseases through catheter-based procedures, such as angioplasty and stenting. In addition to interventional cardiology, his clinical interests include general and preventive cardiovascular medicine. Dr. St. John has conducted clinical research studies and co-authored numerous peer-reviewed scientific articles on cardiology. He has lectured extensively throughout the Caribbean and the U.S. on heart disease and preventive cardiovascular medicine.
Note: Health plans that are currently contracted with Baptist Health are listed below. However, please check with our insurance provider to verify that Baptist Health is part of your provider network.
Aetna Better Health/Healthy Kids
Medicare
HMO
POS
PPO
AvMed HMO/POS/Commercial
PPC/PPO
PPO
CarePlus Health Plans
Great West
HMO
POS
PPO
HMO
Devoted Health
Dimension Health
Dimension International
Doctors HealthCare Plans
First Health Network
BlueCare
Medicare HMO
MyBlue
Options
POS
PPO
Select
Florida Community Care
Global Excel
Humana Commercial/Medicare/HMO/PPO
HMO
Medicaid-HMO
Leon Health
Medicaid
Railroad
Medicaid
Multiplan
Oscar Health Plan
Preferred Care Network fka Medica
Select
HMO
NHP
POS
PPO
Ratings & 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.
4.9 / 5
730 Ratings, 124 Reviews
5.0
Likelihood of recommending this provider
4.9
Provider explained things clearly
5.0
Provider showed concern
4.9
Provider included you in decisions
4.9
Provider discussed treatment options
01/30/2026
Dr. St John is a gem of a human being and medical professional.
01/28/2026
Everyone from the medical assistants & Dr. St. John were excellent
01/24/2026
Although the wait was longer than usual this time Dr St John spent a lot of time answering my questions and was very kind and reassuring. He is worth waiting for!
01/19/2026
Dr St John is the gold standard in medicine. He's professional, engaged, patient, and obviously intelligent without being arrogant.
01/18/2026
Dr St. John is an excellent doctor, always able to explain and make sure everything was clear . I will always recommend him to someone who is looking for an exceptional cardiologist .
01/17/2026
Excellent doctor and team
01/05/2026
I love Dr. St. John
12/23/2025
Dr. St. John is the best!
12/16/2025
Dr St John was very attentive and engaging. Thank you.
12/15/2025
Overall visit was very pleasant
12/07/2025
I recommend this practice 100%!!!!!
12/06/2025
Dr St John listens and cares.
12/03/2025
Dr St John is excellent!!! He was knowledgeable regarding my health history and addressed my current needs. He also made changes to my prescriptions, and I'm feeling so much better.
11/30/2025
Outstanding
11/29/2025
Excellent experience.
11/24/2025
Dr. St. John is an excellent and caring Doctor. He listens patiently to any problems that I was experiencing and answered my questions to my satisfaction.
11/23/2025
In addition to the "Very Good" selection, the selection "Exceptional" should be added. Dr/ Marcus St. John is not only a wonderfl person, he is a fantastic doctor. He listens to what you have to say....answers any questions or concerns you may have.....and talks to you....not at you. He is a very Special man.....and an Exceptional Doctor.
11/17/2025
Dr St John is an excellent physician, who I would not trade for any other Cardiologist. His bedside manner and understanding of our concerns is remarkable. He always explains everything with concern and professionalism.
11/14/2025
Dr. St. John is a very excellent Doctor. He is very patient, knowledgeable and personable. I am very pleased to be his patient.
11/11/2025
No Hesitation ! I had already referred New Patients to Dr. St. John. Their feeling were very lucky allowing them to have a chance
11/07/2025
I thank God for Dr Marcus St John and his staff and the way they are with the patients.
10/27/2025
Explained each test, professionally and very thoroughly.
10/26/2025
Dr St John saved my life 16 1/2 yrs a go. God bless him.
10/14/2025
I have already recommended 3 people to Dr. St. John, and all three are now his patients.
09/30/2025
Best experience great Dr
09/26/2025
I have been a patient of Dr St John's for 4 yrs and he is unparalleled in his expertise and knowledge. Does a great job explaining all issues.
09/08/2025
Dr. St. John is an excellent doctor. I am very happy with his services.
08/30/2025
Extraordinary Hospital and excellent professionals who care for patients.
08/22/2025
Excellent
08/09/2025
Dr. St John is very easy to talk to and explains very well.
08/04/2025
Dr. Saint John was very clear and thorough with his explanations and comments
08/03/2025
Good
08/03/2025
I have recommended to three of my friends and my son.
07/28/2025
Dr. St.John is great!
07/27/2025
He always treats me very well
07/26/2025
Dr. St. John is patient-focused and inspires confidence. I am more than pleased that he is my cardiologist!
07/26/2025
This department is the best of all other Baptist Hospital departments; it is the model that departments should emulate.
07/21/2025
Dr StJohn is very professional and he listen to our concerns
07/20/2025
Very grateful for the treatment and excellent explanation thank you
07/19/2025
I have already recommended it to several friends and family
07/14/2025
Physician asst was polite and professional. Dr. Marcus St John is absolutely the best. I trust him, completely. He's a gift
07/13/2025
The Doctor is a gentleman, he explains everything very well
06/29/2025
Very good as a family
06/23/2025
Felt that my input and concerns were very important.
06/22/2025
Perfect
06/17/2025
Patient treatmentdue and excellent
06/09/2025
I have been seeing Dr. StJohn for years. He is an excellent doctor, always very attentive and professional
06/06/2025
Excellent service
06/02/2025
Real examination!!!
05/24/2025
Definitely, I will highly recommend
05/17/2025
Good.experience
05/13/2025
Dr. St. John is attentive, compassionate and make you feel as if you are his primary concern. Exceptional!
05/12/2025
Fantastic
05/09/2025
Very professional
04/22/2025
Dr. St. John is an excellent care provider.
04/12/2025
As I've stated clearly. This was an excellent and well coordinated doctor's visit for a first time patient.
04/12/2025
No complaints. Professional and efficient
04/04/2025
All very good thank you
04/01/2025
Very Good!
03/27/2025
Dr. St. John is phenomenal.
03/25/2025
Very good
03/25/2025
Very good
03/25/2025
Excellent care provider
03/25/2025
Good
02/17/2025
Very good
02/10/2025
It was lucky for me to have such Good Human being with Dr. St. John Kindness Professional experience.
02/03/2025
Gave me all details and results
01/20/2025
As always, Dr. St. John is very professional, concerned, knowledgeable, confident and compassionate.
01/13/2025
Dr. St John is a professional and an excellent cardiologist. He is kind, a good listener and has an excellent bedside manner. Thanks to him, my husband has been in good health for ten years.
01/10/2025
Ecellent
12/30/2024
Dr St John is very caring and personable. Felt very comfortable expressing my health concerns to him and he listened intently, and was understanding.
12/29/2024
My doctor is very caring.
12/23/2024
Good experience.
12/22/2024
Excellent treatment
12/20/2024
Good
12/16/2024
Doctor listened to my concerns. Had reviewed my lab results. Offered good medical advise to minimize my health concerns.
12/16/2024
The doctor was very nice and explained everything to me I was very happy.
12/13/2024
Dr. St John is an amazing doctor and has excellent bed manners. You can feel that he cares about you and this is not common to see now in days. I recommend him to all my friends and family. He makes Baptist hospital my number one choice for all my medical needs.
12/10/2024
Excellent experience
12/01/2024
Good experience
11/25/2024
ATTENDED BY DR. MARCUS ST JOHN
11/23/2024
Very good great experience
11/11/2024
This visit was my annual checkup.
11/06/2024
I trust everything thing this doctor recommends.
11/04/2024
Dr St John is a very good Doctor I have always had a great experience speaking with him
11/04/2024
I will definitely recommend them 100%
11/04/2024
Great doctor and staff
11/04/2024
Dr. Marcus St. John makes you feel so comfortable and so easy to talk with Him.
11/03/2024
Dr St John was very empathetic to my medical concerns. While the waiting room was full, I was made to feel like he had all the time in the world and I appreciated that
10/25/2024
Excellent care
10/23/2024
I wanted to take a shower but I had a line to put IV and the assistant told me, if you want a bath we can work it out and so it was I sat making sure I was comfortable while she brought the nylon. That was the last attendee... He changed me sheets, everything clean, dressing gowns, socks, in short, he took great care to make me feel confrontable... ( I wanted to have an attention with her to give her a little gift of money and in no way did she accept it, she squeezed my hand, looked at me sweetly and said I am happy to do something to make her comfortable and cool
10/16/2024
Excellent job
10/11/2024
Great experience all the way.
10/05/2024
Great
10/01/2024
Very good care
07/29/2024
Dr St John is exceptional and I am extremely grateful for his care and dedication to my healthcare.
07/26/2024
Dr St John saved my life 15 yrs a go. The best
07/24/2024
Dr. St John is excellent in all areas.
07/15/2024
Excellent
07/12/2024
Good
07/06/2024
So far the best performing department of the Baptist Hospital.
07/05/2024
Dr St John is a gem.
07/01/2024
Excellent
06/27/2024
I love Dr. St John. He is an amazing doctor and a very caring, kind person.
06/23/2024
Dr. Marcus is an excellent professional with a fantastic ability to communicate to the patient everything regarding my condition and the expectations of the procedure. Also the nurse [...] whom I can compare to as an angel.
06/22/2024
Keep doing what you are doing.
06/18/2024
Good experience
06/14/2024
Very grateful for all the medical care
06/14/2024
Dr St John is so personable as well as professional. We are all very fortunate to have them be part of the Baptist cardiology group!
06/08/2024
Love Dr St John and his evaluation of my issues.
06/08/2024
Dr St John is a good person he takes time with his patients listen to them which is very important and makes decisions
06/06/2024
Very fine gentleman , explained all my options in terms I could understand. Thank you
06/05/2024
Good experience
05/31/2024
Love Dr St John.. He is patient, compassionate, kind and genuinely cares for his patients
05/31/2024
Dr. St. John and his staff are excellent!
05/24/2024
Very professional and listened to my concerns.
05/20/2024
Excellent
05/19/2024
Great
05/17/2024
All very well
05/13/2024
I do not like to talk much but I found everything fine.
05/10/2024
Dr. St.John always has me at ease. Absolute confidence in him.
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Note: Health plans that are currently contracted with Baptist Health are listed below. However, please check with our insurance provider to verify that Baptist Health is part of your provider network.
4.9 / 5
