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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


Graduate School
University of Connecticut School of Nursing


Verified Patient Reviews

5 out of 5 stars

My daughter was very impressed with *Melissa.

5 out of 5 stars

The concern, care and patience received was above average and was very helpful.

5 out of 5 stars

Melissa O'Neil is the GREATEST this APRN saved my LIFE and she keeps me going like the energizer bunny, give her a mega raise

5 out of 5 stars

My concerned were answered in terms I could understand. She explained what the test meant and the result and next steps we would take. She ask me additional questions that showed me that would give her more insight to issues they might affect my exciting condition. Plus additional concerns. She's a true doctor/ assistant, this is a true Pa / doctor not just a robot like insurance company's has tried to take away!

5 out of 5 stars

She is beyond excellent!!!!!!

Other Reviews from Around the Web

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

Melissa is absolutely amazing! You never have to worry about anything being under her care!

5 out of 5 stars

Melissa is a genius. She is a Team player, kind, caring, vigilant, and she is willing to think out side the box. You should thank her everyday for the work she does for your company. She is the very definition of the work Care Giver! You should also open up the empty suite of office and give her some space to do her job to the best of her ability. A positive work environment goes a long way.

5 out of 5 stars

Excellent care. Attentive to detail and provides clear, concise explanation of results and what is being tested for and why. Immediately responsive to messages. Takes a rational well analyzed approach to solving health issues.


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, 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.