KELSI MARIE RAU RN, NP
NPI 1972173359
Nurse Practitioner in Simi Valley, CA

Active since June 29, 2021PECOS Enrolled
1424 MADERA RD, SIMI VALLEY, CA 93065(805) 522-5722 Get Directions Write a Review

NPPES record last updated: March 12, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 3, 2021, Jun 29, 2021 (2 updates tracked since 2021).

About Kelsi Marie Rau Rn, Np NPPES

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

KELSI MARIE RAU RN, NP (NPI 1972173359) is an individual nurse practitioner in Simi Valley, California, licensed in California (95028896) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1972173359
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameKELSI MARIE RAUCredential: RN, NP
Location Address1424 MADERA RDSimi Valley, CA 93065-3053
Mailing Address137 Peterborough St Apt 14Boston, MA 02215-4212 · (904) 238-5215
Sole ProprietorYes
Enumeration DateJune 29, 2021
Last NPPES UpdateMarch 12, 20242 updates tracked since enumeration
NPPES CertifiedMarch 12, 2024
✔ NPI 1972173359 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
Licenses✔ Licensed in CA · 95028896✔ Licensed in MA · 2346727
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Also ListedRegistered NurseTaxonomy 163W00000X · License 2346727 (MA)
1424 MADERA RD, Simi Valley, CA 93065

Secondary Practice Location 1

Location 1137 Peterborough St Apt 14Boston, MA 02215-4212 · Phone (904) 238-5215

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kelsi Marie Rau Rn, Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Kelsi Rau reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Federally Qualified Health Center (FQHC)
1424 MADERA RD
Simi Valley, CA 93065
  • Reassigned Medicare billing, California enrollment
  • 216 clinicians in this Medicare group
Federally Qualified Health Center (FQHC)
269 UNION STREET
Lynn, MA 01901
  • Reassigned Medicare billing, Massachusetts enrollment
  • 178 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 93065 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$95.28 typical visit price
range $62.32 – $185.36
Typical copayment $23.82 (range $15.58 – $46.34)
Most-billed visit code 99203
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

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

Social Worker (Clinical)
1424 MADERA RD
SIMI VALLEY, CA 93065
Physician Assistant
1424 MADERA RD
SIMI VALLEY, CA 93065
Nurse Practitioner (Family)
1424 MADERA RD
SIMI VALLEY, CA 93065
Dentist
1424 MADERA RD
SIMI VALLEY, CA 93065
Nurse Practitioner (Family)
1424 MADERA RD
SIMI VALLEY, CA 93065
Internal Medicine
1424 MADERA RD
SIMI VALLEY, CA 93065
Chiropractor
1424 MADERA RD
SIMI VALLEY, CA 93065
Clinic/Center (Federally Qualified Health Center (FQHC))
1424 MADERA RD
SIMI VALLEY, CA 93065

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 Kelsi Rau's NPI number?

The NPI number for Kelsi Rau is 1972173359. It was assigned to this individual provider in the NPPES registry on June 29, 2021.

Where is Kelsi Rau located?

Kelsi Rau practices at 1424 Madera Rd, Simi Valley, CA 93065. The listed phone number is (805) 522-5722.

What is Kelsi Rau's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Kelsi Rau enrolled in Medicare?

Yes. Kelsi Rau is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kelsi Rau's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kelsi Rau reassigns Medicare benefits to 2 organizations: Clinicas Del Camino Real Inc (Simi Valley, CA) and Lynn Community Health, Inc. (Lynn, MA). Each 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 Kelsi Rau'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 Kelsi Rau was last updated on March 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.