Joseph Marine, MD, MBA
Electrophysiology
Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center)
601 N. Caroline St., 7th Floor
Baltimore, MD 21287 Directions
4.9 out of 5
140 verified ratings
140 Ratings, 47 Comments
The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
Jun 25, 2026
Professional
Jun 24, 2026
Very professional & knowledgeable.
Jun 24, 2026
I rated my provider highly because he is: Compassionate; listens to my complaints; he is non-judgmental; he offers solutions/recommendations for how I can improve my health and stay healthy
Jun 11, 2026
I would feel comfortable if the provider had to perform the same procedure on me again
Jun 4, 2026
I am most grateful that I am able to have Dr Marine as my doctor.
May 28, 2026
One of the very best in the world
May 28, 2026
Great Doctor
May 28, 2026
Dr. Marine is the best. Listens to all concerns and answers any questions. Very happy with my care.
May 28, 2026
Very attentive of my issues
May 21, 2026
Dr Marine is a superb cardiologist specializing in electrophysiology. I highly recommend him to all.
May 14, 2026
Dr. Marine is an excellent doctor and I feel fortunate in having him for my cardiac electrophysiologist. I have complete confidence in him and his team.
May 14, 2026
Thank you
May 13, 2026
Outstanding visit with Dr. Marine.
May 7, 2026
I moved to the Philadelphia suburbs over two years ago and drive over two hours to see Dr Marine because I have more confidence in him than in any other health provider that I see. He is also exceptionally responsive to MyChart questions, which is extremely helpful.
May 7, 2026
I really thought Dr. Marine was excellent. It was a new patient appointment.
Apr 16, 2026
Gave me confidence to proceed with medical plans.
Apr 16, 2026
Dr.Marine always dies an excellent job. My entire experience at Hopkins for my procedure & post up care has been excellent. My daughter also agrees. Top notch # 1 care.
Apr 16, 2026
He explained my situation and was thorough
Apr 8, 2026
Very professional and courteous. Knowledgeable and caring.
Mar 25, 2026
Excellent
Mar 12, 2026
Excellent
Mar 5, 2026
Best in Maryland and possibly farther afield....
Feb 26, 2026
I have been a Dr Marine patient for many years, but just recently moved to Philadelphia. I contacted him concerning a problem I was having and he saw me the next day.
Feb 26, 2026
Dr.Marine and his student were very engaging and professional understanding my prior procedures and overall health concerns.
Feb 25, 2026
Extremely intelligent and professional.
Feb 19, 2026
Knowledgeable, concerned, friendly
Feb 5, 2026
Dr Marine is very knowledgeable and communicates the issues in an easy to understand way
Jan 29, 2026
Very nice and caring
Jan 15, 2026
Dr. Marine is an excellent doctor. His attentiveness to me as well as familiarity with my health and conditions is astounding.
Jan 15, 2026
Always positive experience
Jan 15, 2026
My provider was professional & personal. The procedure was successful. I am thoroughly pleased with the whole experience at Johns Hopkins hospital.
Jan 14, 2026
He is tops in his field.
Dec 24, 2025
Very courteous and knowledgeable
Dec 18, 2025
Very easy to talk answed all my questions and concerns.
Dec 11, 2025
Dr. Marine explained my condition and possible actions very clearly tome.
Dec 10, 2025
Very thorough. Knew my heart history at JH. Concerned about my future health.
Dec 10, 2025
Very good service.
Dec 10, 2025
Dr. Marine is an excellent physician. He is an expert in his field, and I find him to be a very caring doctor. I highly recommend him.
Dec 4, 2025
Dr. Marine did a wonderful job on my ablation several years ago and I wanted him to be my doctor on my newest heart blockage issue.
Dec 4, 2025
Always always answers my questions in a way I can understand and appreciate
Nov 20, 2025
Dr Marine was excellent, he listened and explained everything clearly. He has an excellent bedside manner. I trust him 100%
Nov 12, 2025
World's best Cardiovascular specialist
Oct 30, 2025
Very knowledgeable and very good at explaining the issue in understandable language. I didn't feel rushed
Oct 23, 2025
Excellent. Didn't seem rushed. Answered all questions patiently.
Sep 25, 2025
Great all the way around.
Sep 24, 2025
Professional
Sep 18, 2025
Dr Marine has been my Doctor between 10-12 years and I have great respect for him