NPPES file of Aug 9, 2026

Grzegorz Korzeniowski

Family Nurse Practitioner · Menifee, CA

Grzegorz Korzeniowski is a family nurse practitioner with a practice address in Menifee, California, and NPI 1275336034, issued on Mar 28, 2025. Check the license (California 95034365, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1275336034
Name
Grzegorz Korzeniowski
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95034365 CA
Self-reported in NPPES; status is on the state search
Practice location
30420 Haun RD, Menifee, CA 92584
Phone
(951) 676-4193
Enumerated
Mar 28, 2025
Record last updated
Apr 22, 2025
Medicare enrollment
Enrolled (PECOS I20250509002004); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 family nurse practitioner records → All 16,966 in California → Look up another NPI →

Also registered at 30420 Haun RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Daniel Camarillo, MDFamily Medicine Physician1073693552
  2. Rolando Gutierrez, M.D.Family Medicine Physician1104841212
  3. Evelyn KelleyFamily Nurse Practitioner1710569694
  4. Richard Eric Madrid, M.D.Family Medicine Physician1194774158
  5. Rebekah MaldonadoMedical Physician Assistant1740756279
  6. Katharine O'Brien, DOFamily Medicine Physician1083720718

Verify Grzegorz Korzeniowski 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 95034365    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Rancho Family Medical Group IncMenifee, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Grzegorz Korzeniowski among 16,966 family nurse practitioner records in California

Grzegorz Korzeniowski 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 2025, is newer than 90% of them.

  • NPI issued2025 · 90% of these records are older, 3% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2024 · median 2019 among the 6,793 with a school on file
  • Record last updated2025 · 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).

23 family nurse practitioner records list a practice address in Menifee

They are 23 of the 906 NPPES records with a practice address in Menifee, and 16,966 family nurse practitioner records in California.

All 16,966 in California → Every provider in Menifee → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Tricia Rose Alegado, FNP-CMenifee, CA 925841336619451
  2. Tori Battle, NURSE PRACTITIONERMenifee, CA 925841598368151
  3. Gema CastellonMenifee, CA 925841386104230
  4. Evelyn KelleyMenifee, CA 925841710569694
  5. Glyka Manahan, FNPMenifee, CA 925841134093792
  6. Lisa McAllister, DHA, APRN, FNP-CMenifee, CA 925841902511330
  7. Reyna Montoya, FNPMenifee, CA 925841508531302
  8. Whitney Morrow, FNPMenifee, CA 925841922957901

Common questions

What is Grzegorz Korzeniowski's NPI number?

Grzegorz Korzeniowski's National Provider Identifier (NPI) is 1275336034, issued on Mar 28, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Grzegorz Korzeniowski located?

The NPPES record lists a practice address at 30420 Haun RD, Menifee, CA, 92584. Phone: (951) 676-4193. Providers update this record themselves, so call before visiting.

How can I verify Grzegorz Korzeniowski's license?

NPPES lists California license number 95034365, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.