• Hartford HealthCare Medical Group
• Hartford Hospital
• Integrated Care Partners
• MidState Medical Center
• The Hospital of Central Connecticut

Medical School
New York Medical College

Residency
Baystate Medical Center

Fellowship
University of Minnesota

Verified Patient Reviews

February 21, 2026

I can't say enough positive things about Dr. Cosin. He is a gifted surgeon, ecologist and care giver. He is patient and reassuring and makes you feel like you are important.

February 02, 2026

Dr. Cosin and his staff are wonderful, caring, and very helpful. They have all made me feel very comfortable and less nervous.

February 02, 2026

Dr. Cosin provides a high standard of professional patient care, understanding, and encouragement. I am blessed to have him as my oncologist and confidant.

January 24, 2026

Answered all questions and discussed plans in a way that was easily understandable. Friendly and professional.

January 11, 2026

Dr. Cosin has always taken excellent care of me throughout my cancer treatment. He's a very kind and caring doctor.

January 04, 2026

Dr. Cosin is a top tier doctor who truly cares about his patients. Along with his knowledge and expertise, you are put at ease knowing that your treatment with him was the best.

October 25, 2025

Dr Cosin and Nurse Practitioner great

Other Reviews from Around the Web

Reviewed on July 05, 2026

Saved my life twice - kind, skilled and extremely intelligent.

Reviewed on February 12, 2026

Dr. Cosin is a wonderful doctor, he is direct and to the point. He puts you at ease, I trust him to get it done. His staff is also amazing. I highly recommend Dr. Cosin.

Reviewed on January 10, 2026

Dr. Cosin was kind and his expertise immediately put me at ease. He patiently answered all my questions. His surgery room colleagues spoke very highly of him as a surgeon. I’m so grateful for the care he provided me.

Reviewed on October 28, 2025

Wonderful doctor very caring and with a great sense of humor

Dr. Cosin has been in practice for 18 years and serves as the leader of the Hartford HealthCare Cancer Institute’s Oncology Disease Management team. With special training in minimally invasive laparoscopic and robotic surgery, Dr. Cosin enjoys not only taking care of complex cases, but developing relationships with his patients, many of whom have followed him throughout the years.

He is active in teaching and clinical research, for which he has won numerous awards, and has volunteered his time for the last decade providing gynecologic care to the women of Grenada in the Caribbean.

In 2015, he received the William Petit, Jr. Award for his dedication to community service. He has also been named the following: a Newsweek Top Doctors for Cancer; Castle Connolly America’s Top Doctors for Cancer; and Hartford Magazine, Best Doctors.

Aetna, Anthem, CarePartners of Connecticut, Cigna Healthcare, Colonial Cooperative Care, Connecticare, Connecticare Commercial, Connecticare Medicare, Coventry, First Health Group Corp., Health New England, Healthy Connecticut, Northeast Health Direct, One Health Plan/ Great-West Healthcare, Oxford Health Plans, Prime Health Services, Private Health Care Systems, Inc., 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.

Covered by Financial Assistance policy.