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Hanretta, Kelly Colleen, DO




English, French

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

Areas of Expertise
Adult Congenital Heart Disease, Cardiac Rehabilitation, Cardiomyopathy, Cardiovascular Imaging, Cardiovascular MRI, Coronary Artery Disease, Geriatric Evaluations, Heart Transplant Management, Hypertension, Mechanical Assist Device, Non-Invasive Cardiovascular Medicine, Peripheral Vascular Disease, Preventive Cardiology, Preventive Medicine, Valvular Heart Disease, Women's Cardiovascular Medicine


Medical School
New York Institute of Technology - College of Osteopathic Medicine

Professional Organizations

  • American Osteopathic Association, Member
  • American College of Cardiology, Member
  • Association of Program Directors in Internal Medicine, Member


Verified Patient Reviews

Other Reviews from Around the Web

5 out of 5 stars

I was afraid after Dr.Seltzer retired that I would not find a Dr. as kind an caring as he. I had a new appointment with Dr. Hanretta and found her wonderful. She is caring, kind and takes her time with you, I am very lucky to have found hr.

5 out of 5 stars

Dr. Hanretta impressed me with her professionalism and her warmth. She took her time, asking thoughtful questions and listening carefully to my answers. I hope to be able to continue this relationship. Windham seems to lose cardiologists regularly, and I have seen a new one almost every year I have been using their services.

5 out of 5 stars

Very thorough very personable


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, Harvard Pilgrim, Health Connecticut, Health Direct, Health New England, Healthy Connecticut, HMC/ Northeast Healthcare, Medspan Commercial, Medspan Medicare, 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.