Melissa A O'neill, APRN - Medicare Nurse Practitioner in Hartford, CT

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Melissa A O'neill, APRN is a medicare enrolled "Nurse Practitioner" in Hartford, Connecticut. She graduated from nursing school in 1993 and has 32 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice The William W Backus Hospital and her current practice location is 85 Retreat Ave, Hartford, Connecticut. You can reach out to her office (for appointments etc.) via phone at (860) 249-6291.

Melissa A O'neill is licensed to practice in Connecticut (license number 000993) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1235236969.

Contact Information

Melissa A O'neill, APRN
85 Retreat Ave,
Hartford, CT 06106-2555
(860) 249-6291
(860) 728-0151

Map and Direction




Provider's Profile

Full NameMelissa A O'neill
GenderFemale
SpecialityNurse Practitioner
Experience32 Years
Location85 Retreat Ave, Hartford, Connecticut
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Melissa A O'neill graduated from nursing school in 1993
  NPI Data:
  • NPI Number: 1235236969
  • Provider Enumeration Date: 09/17/2006
  • Last Update Date: 04/08/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 7618053018
  • Enrollment ID: I20080326000280

Medical Identifiers

Medical identifiers for Melissa A O'neill such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1235236969NPI-NPPES
400000993CT02OtherCTANTHEM BCBS
004195055MedicaidCT
2V5525OtherCTHEALTH NET
772496OtherCTCONNECTICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363L00000XNurse Practitioner 000993 (Connecticut)Primary
363LA2200XNurse Practitioner - Adult Health 000993 (Connecticut)Secondary
363LG0600XNurse Practitioner - Gerontology 000993 (Connecticut)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
William W Backus HospitalNorwich, CTHospital
Windham Community Memorial HospitalWillimantic, CTHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
The William W Backus Hospital0749170645208

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Melissa A O'neill allows following entities to bill medicare on her behalf.
Entity NameHartford Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407806391
PECOS PAC ID: 2567366016
Enrollment ID: O20031125000700
Entity NameHartford Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770696643
PECOS PAC ID: 2567366016
Enrollment ID: O20031125000752
Entity NameWindham Community Memorial Hospital, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023191467
PECOS PAC ID: 2961309059
Enrollment ID: O20031217000231
Entity NameThe William W Backus Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467517235
PECOS PAC ID: 0749170645
Enrollment ID: O20040316000739

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Melissa A O'neill is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Melissa A O'neill, APRN
85 Retreat Ave,
Hartford, CT 06106-2555

Ph: (860) 249-6291		Melissa A O'neill, APRN
85 Retreat Ave,
Hartford, CT 06106-2555

Ph: (860) 249-6291

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.