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FRESENIUS MEDICAL CARE ORANGE COUNTY, LLC
NPI 1285009704
Clinic/Center - End-Stage Renal Disease (ESRD) Treatment in Tustin, CA

Active since December 09, 2015
535 E 1ST ST, TUSTIN, CA 92780(714) 730-1428(714) 730-7958 Get Directions Write a Review

NPPES record last updated: August 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 29, 2026, Oct 17, 2023, Aug 12, 2021 and 1 more (4 updates tracked since 2015).

About Fresenius Medical Care Orange County, Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

FRESENIUS MEDICAL CARE ORANGE COUNTY, LLC (NPI 1285009704), doing business as Rai-east First-tustin, is a healthcare organization registered as an end-stage renal disease (esrd) treatment in Tustin, California and active in the NPI registry since December 2015. The organization lists Denise Wright, Vice President, as its authorized official.

NPPES Registry Identity

NPI1285009704
Entity TypeOrganization
Primary Taxonomy261QE0700X
Legal Business NameFRESENIUS MEDICAL CARE ORANGE COUNTY, LLC
Location Address535 E 1ST STTustin, CA 92780-3312
Mailing Address535 E 1st StTustin, CA 92780-3312 · (714) 730-1428 · Fax (714) 730-7958
Phone(714) 730-1428
Fax(714) 730-7958
Organization SubpartYesParent: Fresenius Medical Care Holdings, Inc.
Authorized OfficialDenise WrightVice President · (781) 676-5200
Enumeration DateDecember 9, 2015
Last NPPES UpdateAugust 29, 20264 updates tracked since enumeration
NPPES CertifiedAugust 29, 2026
✔ NPI 1285009704 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · End-Stage Renal Disease (ESRD) TreatmentAmbulatory Health Care Facilities
Taxonomy Code261QE0700X
535 E 1ST ST, Tustin, CA 92780
Open in Google Maps ↗

Other Names 1

Doing Business AsRai-east First-tustin

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and revalidation status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Fresenius Medical Care Orange County, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by October 31, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20160509000731Part A · End-Stage Renal Disease Facility (ESRD)Due dateOctober 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CRYSTAL ARBIZU
Social Worker (Clinical)
535 E 1ST ST
TUSTIN, CA 92780
Orange County (714) 730-1428
JESSICA GARCIA
Social Worker (Clinical)
535 E 1ST ST
TUSTIN, CA 92780
Orange County (714) 730-1428

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 Fresenius Medical Care Orange County, LLC's NPI number?

The NPI number for Fresenius Medical Care Orange County, LLC is 1285009704. It was assigned to this organization in the NPPES registry on December 9, 2015. The provider is doing business as RAI-East First-Tustin.

Where is Fresenius Medical Care Orange County, LLC located?

Fresenius Medical Care Orange County, LLC is located at 535 E 1st St, Tustin, CA 92780. The listed phone number is (714) 730-1428.

What is Fresenius Medical Care Orange County, LLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in End-Stage Renal Disease (ESRD) Treatment, with taxonomy code 261QE0700X.

Is Fresenius Medical Care Orange County, LLC enrolled in Medicare?

Yes. Fresenius Medical Care Orange County, LLC is registered in the Medicare PECOS enrollment system.

When is Fresenius Medical Care Orange County, LLC's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Part A enrollment for this organization (California, End-Stage Renal Disease Facility (ESRD)) is due for revalidation by October 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

What insurance does Fresenius Medical Care Orange County, LLC accept?

Health plans from UnitedHealthcare list Fresenius Medical Care Orange County, LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Fresenius Medical Care Orange County, LLC was last updated on August 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 60 days 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.