GRZEGORZ KORZENIOWSKI
NPI 1275336034
Nurse Practitioner - Family in Menifee, CA
About Grzegorz Korzeniowski NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRZEGORZ KORZENIOWSKI (NPI 1275336034) is an individual family provider in Menifee, California, licensed in California (95034365) and active in the NPI registry since March 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Grzegorz Korzeniowski is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Grzegorz Korzeniowski reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Temecula, CA 92590
- Reassigned Medicare billing, California enrollment
- 117 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92584 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Grzegorz Korzeniowski's NPI number?
The NPI number for Grzegorz Korzeniowski is 1275336034. It was assigned to this individual provider in the NPPES registry on March 28, 2025.
Where is Grzegorz Korzeniowski located?
Grzegorz Korzeniowski practices at 30420 Haun Rd, Menifee, CA 92584. The listed phone number is (951) 676-4193.
What is Grzegorz Korzeniowski's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Grzegorz Korzeniowski enrolled in Medicare?
Yes. Grzegorz Korzeniowski is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Grzegorz Korzeniowski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grzegorz Korzeniowski reassigns Medicare benefits to Rancho Family Medical Group, Inc. (Temecula, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Grzegorz Korzeniowski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Grzegorz Korzeniowski was last updated on April 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Grzegorz Korzeniowski · NPI 1275336034
Family physician in Menifee, California. Individual provider, active in the CMS NPPES registry since March 28, 2025.
## Identity
- **NPI:** 1275336034 (Entity type: Individual)
- **Enumerated:** March 28, 2025
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95034365 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 30420 HAUN RD, Menifee, CA 92584-6810
- **Phone:** (951) 676-4193
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Rancho Family Medical Group, Inc. (NPI 1598791600, Temecula, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** April 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1275336034) · Data from the CMS NPPES public registry.