NPPES file of Aug 9, 2026

John Joseph O'Neill, FNP

Family Nurse Practitioner · Forest Falls, CA

John Joseph O'Neill, FNP is a family nurse practitioner with a practice address in Forest Falls, California, and NPI 1346946571, issued on Jan 31, 2023. Check the license (California 95022649, as entered in NPPES) with the California 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
1346946571
Name
John Joseph O'Neill
Credential
FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95022649 CA
Self-reported in NPPES; status is on the state search
Practice location
9261 Hemlock Dr, Forest Falls, CA 92339
Phone
(619) 933-2586
Enumerated
Jan 31, 2023
Record last updated
Jan 31, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →

Verify John Joseph O'Neill in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95022649    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
Find the California license search

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92% fewer Medicare Part D claims than the average family nurse practitioner in 2024

99 Medicare Part D claims for 65 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. John O'Neill99
  2. Specialty average1,305

Most prescribed

  1. Amoxicillin-Clavulanate Potass12 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.

John Joseph O'Neill among 16,966 family nurse practitioner records in California

John Joseph O'Neill, FNP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 75% of them.

  • NPI issued2023 · 75% of these records are older, 17% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 40% of these records are
  • Record last updated2023 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Family Nurse Practitioner providers in California

There are 16,966 family nurse practitioner records in California.

All 16,966 in California → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Nicole Alcantara, N.P.Fontana, CA 923371003206103
  2. Rebecca Carpio-Darshay, NPFontana, CA 923371649459652
  3. Richard ChristensenFontana, CA 923371912415415
  4. Karla Angela Montano, NPFontana, CA 923371083281075
  5. Maureen Musa, FNPFontana, CA 923371619252517
  6. Jude OkworFontana, CA 923371063163608
  7. Ruth Roman, MSN, FNP-CFontana, CA 923371235726365
  8. Berenice Vazquez, FNPFontana, CA 923371861854846

Common questions

What is John Joseph O'Neill, FNP's NPI number?

John Joseph O'Neill, FNP's National Provider Identifier (NPI) is 1346946571, issued on Jan 31, 2023. An NPI identifies a provider in billing; it is not a license.

Where is John Joseph O'Neill, FNP located?

The NPPES record lists a practice address at 9261 Hemlock Dr, Forest Falls, CA, 92339. Phone: (619) 933-2586. Providers update this record themselves, so call before visiting.

How can I verify John Joseph O'Neill, FNP's license?

NPPES lists California license number 95022649, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does John Joseph O'Neill, FNP prescribe under Medicare Part D?

In 2024, John Joseph O'Neill, FNP had 99 Medicare Part D claims for 65 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.