NPPES file of Aug 9, 2026

Denise Ann O'Neil, AGNP

Adult Health Nurse Practitioner · Salamanca, NY

Denise Ann O'Neil, AGNP is an adult health nurse practitioner with a practice address in Salamanca, New York, and NPI 1427681493, issued on Feb 19, 2020. Check the license (New York 309565, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427681493
Name
Denise Ann O'Neil
Credential
AGNP
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
309565 NY
Self-reported in NPPES; status is on the state search
Practice location
4039 US 219, Salamanca, NY 14779
Phone
(716) 945-0371
Enumerated
Feb 19, 2020
Record last updated
Feb 19, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(716) 945-0361
Medicare enrollment
Enrolled (PECOS I20200401001615); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest adult health nurse practitioner records → All 6,028 in New York → Look up another NPI →

Verify Denise Ann O'Neil in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license 309565    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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5.6 times the Medicare Part D claims of the average adult health nurse practitioner in 2024

7,124 Medicare Part D claims for 323 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 59 claims were for opioids.

  1. Denise O'Neil7,124
  2. Specialty average1,280

Most prescribed

  1. Levothyroxine Sodium452 claims
  2. Atorvastatin Calcium446 claims
  3. Lisinopril325 claims
  4. Rosuvastatin Calcium311 claims
  5. Omeprazole308 claims
  6. Amlodipine Besylate284 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.

Industry payments in 2024: $20.62

1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 12,291 providers of this specialty with any payment received $946.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Denise O'Neil$20.62
  2. Specialty average$946.40

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Olean General HospitalSalamanca, NY · Acute Care Hospitals1 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Denise Ann O'Neil among 6,028 adult health nurse practitioner records in New York

Denise Ann O'Neil, AGNP is one of 6,028 adult health nurse practitioner records with a practice address in New York. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 74% of them.

  • NPI issued2020 · 74% of these records are older, 22% newer
  • In a Medicare fileYes · 69% of these records are
  • In the CMS Doctors and Clinicians fileYes · 44% of these records are
  • Graduated2015 · median 2016 among the 2,678 with a school on file
  • Record last updated2020 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2 adult health nurse practitioner records list a practice address in Salamanca

They are 2 of the 103 NPPES records with a practice address in Salamanca, and 6,028 adult health nurse practitioner records in New York.

All 6,028 in New York → Every provider in Salamanca → Adult Health Nurse Practitioner nationwide →

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Kathryn Cooney-Thrush, NPSalamanca, NY 147791144434598
  2. Natalia SemyenovaStockton, NY 147841982010740
  3. Krista Przybelinski, NPWestfield, NY 147871043647688
  4. Kelly Blackmon, NPOlean, NY 147601346471851
  5. Tami Buzzard, ANPOlean, NY 147601528067667
  6. Elizabeth Dixon, NPOlean, NY 147601982834024
  7. Elizabeth Mitchell, NPOlean, NY 147601457432841
  8. Cathy Wells, AGNP-COlean, NY 147601255957320

Common questions

What is Denise Ann O'Neil, AGNP's NPI number?

Denise Ann O'Neil, AGNP's National Provider Identifier (NPI) is 1427681493, issued on Feb 19, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Denise Ann O'Neil, AGNP located?

The NPPES record lists a practice address at 4039 US 219, Salamanca, NY, 14779. Phone: (716) 945-0371. Providers update this record themselves, so call before visiting.

How can I verify Denise Ann O'Neil, AGNP's license?

NPPES lists New York license number 309565, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.

How much does Denise Ann O'Neil, AGNP prescribe under Medicare Part D?

In 2024, Denise Ann O'Neil, AGNP had 7,124 Medicare Part D claims for 323 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.