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John, Manju Mary, MD





Providing the best care to our patients and their companions requires communicating in a way everyone understands. Interpreter services are available 24 hours a day, 7 days a week, 365 days a year. All spoken languages are available, as well as American Sign Language (AS/L).

Accepting New Patients
  • Cardiovascular Medicine
  • Nuclear Cardiology

Areas of Expertise
Cardiac Arrhythmias, Echocardiography, Heart Failure, Non-Invasive Cardiovascular Medicine, Valvular Heart Disease


Maimonides Medical Center

Coney Island Hospital

Medical School
Kerala University (India)

Coney Island Hospital

Professional Organizations

  • American College of Cardiology, Member
  • American College of Echocardiography, Member
  • Society of Diagnostic Medical Sonography, Member


Verified Patient Reviews

5 out of 5 stars

Explained ablation, benefits and risks and talked about revisiting procedure when condition of legs improves

5 out of 5 stars

This was the second time that the doctor failed to put in prescription orders. The first time, the doctor asked about two meds that the doctor thought she ordered. They were never ordered. She asked how I was doing on the meds 6 months later, even though they were never ordered. This time, the doctor forgot to order a new med. She ordered it two days later after I messaged her to say that I was switching doctors because she forgot to order meds twice.

5 out of 5 stars

Doctor explained in detail my condition.

5 out of 5 stars

*Dr. John and staff are the BEST!! Concerned - listen - explains all questions treatments.

5 out of 5 stars

I felt listened to and included. All of my concerns were addressed and I didn't feel rushed in any way.

5 out of 5 stars

Dr John is wonderful. I feel so comfortable with her

5 out of 5 stars

*Dr. John always makes me feel comfortable - answers all questions and explains answers to all questions - very confident with *Dr. John.

5 out of 5 stars

I so respect *Dr. John! She is so very wonderful! I trust her advice, finding it works for me. I always recommend her. She is the best.

5 out of 5 stars

Dr john was awesome

5 out of 5 stars

I trust Dr. John

5 out of 5 stars

Dr John is the BEST, I love her style, she addresses me, writes down my issues, doesn't bring the computer into the room and sit behind the screen while talking to me, she does it the old fashioned way, very personable

5 out of 5 stars

Dr. Manju John was excellent, addressed all my questions, and reviewed recent tests with me. She also explained her thinking on how to proceed going forward.

5 out of 5 stars

I was prescribed medication for both blood pressure as well as cholesterol and afterwards question whether life style changes, along with dietary changes may have been an option. Will discuss during my next visit, did not think to ask at initial Consultation.

Other Reviews from Around the Web

5 out of 5 stars

I’ve taken my Mom to see countless doctors and most are so dismissive. But Dr. John was so sweet, so kind, attentive, and really listened to us. We live an hour away from the Middletown office and 10 mins from the Enfield office, but we have chosen to drive to Middletown just for Dr. John because she is so amazing.

5 out of 5 stars

Wonderful very professional and kind

5 out of 5 stars

Dr. Manju John is always so genuine and thourogh. I recommend her to my family and friends.

5 out of 5 stars

Dr.John is outstanding! The staff is wonderful as well.


Aetna, Anthem, BCBS Medicare, CarePartners of Connecticut, Cigna Healthcare, Colonial Cooperative Care, Community Health Network of Connecticut, Inc., Connecticare, Connecticare Commercial, Connecticare Medicare, Corvel, Coventry, Essence Healthcare, Evercare, First Health Group Corp., Focus, Health Connecticut, Health Direct, Health New England, Healthy Connecticut, Multiplan, Northeast Health Direct, One Health Plan/ Great-West Healthcare, Oxford Health Plans, Prime Health Services, Private Health Care Systems, Inc., Senior Whole Health, United Healthcare, WellCare of Connecticut, Inc.

This information is subject to change at any time. Please check with your insurance provider before scheduling your appointment or receiving services to confirm they are a participating member of the Hartford HealthCare network.