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Individual provider Active NPI

Melissa A O'Neill, APRN

  • Adult Health Nurse Practitioner
  • Lebanon, NH
National Provider Identifier
1235236969
Registry record updated Feb 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Adult Health Nurse PractitionerTaxonomy code 363LA2200X
License
116267-23 Issued in NH
Practice address
1 Medical Center Dr
Lebanon, NH 03756-1000
Phone
(603) 650-5000
Fax
(603) 640-1228
NPI assigned
Sep 17, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 18, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Gerontology Nurse Practitioner 363LG0600X 000993 CT
Adult Health Nurse Practitioner 363LA2200X 116267-23 NH Primary
Nurse Practitioner 363L00000X 000993 CT
Adult Health Nurse Practitioner 363LA2200X 000993 CT

Addresses

Primary practice location

1 Medical Center Dr
Lebanon, NH 03756-1000

Mailing address

85 Retreat Ave
Hartford, CT 06106-2555
Phone (860) 249-6291

Other practice location 1

85 Retreat Ave
Hartford, CT 06106-2555
Phone (860) 249-6291

Other identifiers 4

IdentifierTypeStateIssuer
400000993CT02OtherCTANTHEM BCBS
004195055MedicaidCT
2V5525OtherCTHEALTH NET
772496OtherCTCONNECTICARE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT, NH2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20080326000280 CT Practitioner - Nurse Practitioner 7618053018 Reassigns benefits to 4 organizations
I20260226000152 NH Practitioner - Nurse Practitioner 7618053018 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 1993
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Mary Hitchcock Memorial HospitalGroup PAC ID 4486561164, 1,269 clinicians
The William W Backus HospitalGroup PAC ID 0749170645, 248 clinicians

Practice addresses (Care Compare)

1 Medical Ctr Dr
Lebanon, NH 03756-1000
Phone (603) 650-5000

326 Washington St
Norwich, CT 06360-2740
Phone (860) 889-8331

Hospital & facility affiliations

  • William W Backus Hospital Hospital, Norwich, CT, CCN 070024
  • Mary Hitchcock Memorial Hospital Hospital, Lebanon, NH, CCN 300003
  • Windham Community Memorial Hospital Hospital, Willimantic, CT, CCN 070021
  • Hartford Hospital Hospital, Hartford, CT, CCN 070025

Merit-based Incentive Payment System (MIPS)

Final score
97.8 of 100Reported as group
Quality
90
Promoting interoperability
100
Improvement activities
40
Cost
78.43

Merit-based Incentive Payment System (MIPS)

Final score
97.64 of 100Reported as group
Quality
79.59
Promoting interoperability
100
Improvement activities
40
Cost
81.22

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
993CTMDSocial Worker
000993CTMDChiropractor
116267-23NHMDAdult Health Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Hartford Pathology Associates, P.C. Current Accepting new patients
The William W Backus Hospital CurrentSince Aug 29, 2023 Accepting new patients
Hartford Hospital CurrentSince Jan 1, 2017 Accepting new patients
Dartmouth-Hitchcock Clinic CurrentSince Feb 16, 2026 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Feb 16, 2026 Accepting new patients
Hartford Hospital CurrentSince Jan 1, 2017 Accepting new patients
William W Backus Hospital CurrentSince Aug 29, 2023 Accepting new patients
Hartford Hospital CurrentSince Jan 1, 2017 Accepting new patients
Mary Hitchcock Memorial Hospital CurrentSince Feb 16, 2026 Accepting new patients
Windham Community Memorial Hospital, Inc. CurrentSince Jan 1, 2017 Accepting new patients
Joseph T Anquillare, MD, LLC Nurse Practitioner Past Accepting new patients
Starling Physicians, PLLC Past Accepting new patients

Locations

80 Fisher Dr
Avon, CT 06001
Phone (855) 255-6181

85 Retreat Ave
Hartford, CT 06106
Phone (860) 249-6291

326 Washington St
Norwich, CT 06360
Phone (860) 701-0140

112 Mansfield Ave
Willimantic, CT 06226
Phone (830) 423-6410

519 Palisado Ave
Windsor, CT 06095
Phone (860) 298-9740

1 Medical Dr
Lebanon, NH 03756
Phone (603) 650-5922

Organizations & group practices 13

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

View all 13

Hospital & facility affiliations 8

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1158451200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771372800000",
    "number": "1235236969",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "85 RETREAT AVE",
            "city": "HARTFORD",
            "state": "CT",
            "postal_code": "061062555",
            "telephone_number": "860-249-6291",
            "fax_number": "860-728-0151"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 MEDICAL CENTER DR",
            "city": "LEBANON",
            "state": "NH",
            "postal_code": "037561000",
            "telephone_number": "603-650-5000",
            "fax_number": "603-640-1228"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "85 Retreat Ave",
            "address_purpose": "LOCATION",
            "city": "Hartford",
            "state": "CT",
            "postal_code": "061062555",
            "country_code": "US",
            "telephone_number": "860-249-6291",
            "fax_number": "860-728-0151",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "O'NEILL",
        "first_name": "MELISSA",
        "middle_name": "A",
        "credential": "APRN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-09-17",
        "last_updated": "2026-02-18",
        "certification_date": "2026-02-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "CT",
            "license": "000993",
            "primary": false
        },
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "NH",
            "license": "116267-23",
            "primary": true
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CT",
            "license": "000993",
            "primary": false
        },
        {
            "code": "363LA2200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Adult Health",
            "state": "CT",
            "license": "000993",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ANTHEM BCBS",
            "identifier": "400000993CT02",
            "state": "CT"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "004195055",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTH NET",
            "identifier": "2V5525",
            "state": "CT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CONNECTICARE",
            "identifier": "772496",
            "state": "CT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Lebanon, NH

Sources for this page

Verify at the official NPI Registry.