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O'Neill, Melissa Ann, APRN





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
  • Hematology / Oncology

Areas of Expertise
Geriatric Oncology

Hospitals and Organizations

  • Hartford HealthCare Medical Group
  • Integrated Care Partners


Graduate School
University of Connecticut School of Nursing


Verified Patient Reviews

5 out of 5 stars

*Melissa took her time with you - never rushed you & genuinely concerned for your welfare.

5 out of 5 stars

Melissa O'Neil is an outstanding health care provider. She is very skilled, knowledgeable, caring, and makes you feel that she is interested in you and your health. I feel so fortunate to be under her care.

Other Reviews from Around the Web

5 out of 5 stars

She was very nice I loved my experience

5 out of 5 stars

Every staff member including reception was helpful and pleasant. The Dr., Melissa O/Neil, is outstanding in sharing information thoroughly and in layman's terms.

5 out of 5 stars

Melissa O'Neill took the time to ask me thorough questions and let me tell my story to better understand my medical situation. It was the first time in a long time I felt like a medical professional actually cared to hear what I had to say and help me with my situation rather than get me in and out of the office as quickly as possible like several other doctors have. Also, when I went for follow-up testing she had ordered, she personally called me to let me know the results immediately when she received them. She was excellent!

5 out of 5 stars

Awesome staff great atmosphere

5 out of 5 stars

My first visit with dr O'Neil, she is a person who works with all her heart, I was nervous since she did not know my results, she attended me with that ability to explain and that great love that made me feel calm and in trust, today was my first treatment and I felt at home there must be many doctors like her who love their profession and show it thanks to her and all her staff. Blessings 🙏

5 out of 5 stars

Very caring and respectful nice to see

5 out of 5 stars

Melissa is so great to deal with- she never rushed you thru the appointment. She really makes you feel so comfortable and well cared for!


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

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.