Mackenzie Corbeil O'Neill, APRN
Acute Care Nurse Practitioner · Hartford, CT
Mackenzie Corbeil O'Neill, APRN is an acute care nurse practitioner with a practice address in Hartford, Connecticut, and NPI 1629454889, issued on Aug 10, 2015. Check the license (Connecticut 6226, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mackenzie Corbeil O'Neill
- Credential
- APRN
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License numbers
- 6226 CT
006226 CT
Self-reported in NPPES; status is on the state search - Practice location
- 80 Seymour St, Hartford, CT 06102
- Phone
- (860) 972-4670
- Enumerated
- Aug 10, 2015
- Record last updated
- Aug 31, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest acute care nurse practitioner records → All 368 in Connecticut → Look up another NPI →
Also registered at 80 Seymour St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mackenzie Corbeil O'Neill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 6226Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average acute care nurse practitioner in 2024
142 Medicare Part D claims for 69 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. 38 claims were for opioids.
Most prescribed
- Oxycodone Hcl33 claims
- Gabapentin19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Mackenzie Corbeil O'Neill among 368 acute care nurse practitioner records in Connecticut
Mackenzie Corbeil O'Neill, APRN is one of 368 acute care nurse practitioner records with a practice address in Connecticut. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 38% of them.
- NPI issued2015 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2015 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
135 acute care nurse practitioner records list a practice address in Hartford
They are 135 of the 6,317 NPPES records with a practice address in Hartford, and 368 acute care nurse practitioner records in Connecticut.
All 368 in Connecticut → Every provider in Hartford → Acute Care Nurse Practitioner nationwide →
The 8 acute care nurse practitioner records with the nearest ZIP codes
- Lisa Baker, APRNHartford, CT 061021528162146
- Michael Bryant, APRNHartford, CT 061021780784579
- Violet Chrostowski, APRNHartford, CT 061021265533244
- Mary-Ann Cyr, APRNHartford, CT 061021124114988
- Kelly Deforest, APRNHartford, CT 061021831149780
- Nicole Dunn, APRNHartford, CT 061021508952334
- Linda Freeman-Bosco, APRNHartford, CT 061021093802845
- Jennifer Freund, APRNHartford, CT 061021053408823
Common questions
What is Mackenzie Corbeil O'Neill, APRN's NPI number?
Mackenzie Corbeil O'Neill, APRN's National Provider Identifier (NPI) is 1629454889, issued on Aug 10, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mackenzie Corbeil O'Neill, APRN located?
The NPPES record lists a practice address at 80 Seymour St, Hartford, CT, 06102. Phone: (860) 972-4670. Providers update this record themselves, so call before visiting.
How can I verify Mackenzie Corbeil O'Neill, APRN's license?
NPPES lists Connecticut license number 6226, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Mackenzie Corbeil O'Neill, APRN prescribe under Medicare Part D?
In 2024, Mackenzie Corbeil O'Neill, APRN had 142 Medicare Part D claims for 69 beneficiaries; the average among acute care nurse practitioner prescribers was 594. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.