1. Home
  2. Directory
  3. California
  4. West Hills
  5. Nurse Practitioner
  6. NPI Profile

MRS. PROSCOVIA MAYANJA FNP
NPI 1184023830
Nurse Practitioner - Family in West Hills, CA

Active since August 19, 2014PECOS Enrolled
22560 NAPA ST, WEST HILLS, CA 91304(818) 999-9112 Get Directions Write a Review

NPPES record last updated: May 28, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Mrs. Proscovia Mayanja Fnp NPPES

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

MRS. PROSCOVIA MAYANJA FNP (NPI 1184023830) is an individual family provider in West Hills, California, licensed in California (23483) and active in the NPI registry since August 2014. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184023830
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. PROSCOVIA MAYANJACredential: FNP
Location Address22560 NAPA STWest Hills, CA 91304-2244
Mailing Address22560 Napa StWest Hills, CA 91304-2244
Phone(818) 999-9112
Sole ProprietorYes
Enumeration DateAugust 19, 2014
Last NPPES UpdateMay 28, 2019
✔ NPI 1184023830 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in CA · 23483
22560 NAPA ST, West Hills, CA 91304
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Proscovia Mayanja Fnp 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 Proscovia Mayanja reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

El Proyecto Del Barrio, Inc.
2.5 mi
Federally Qualified Health Center (FQHC)
20800 SHERMAN WAY
Winnetka, CA 91306
  • Reassigned Medicare billing, California enrollment
  • 38 clinicians in this Medicare group
NPI 1538130893 (818) 883-2273
Willits Hospital Inc.
450 mi
Critical Access
1 MARCELA DRIVE
Willits, CA 95490
  • Reassigned Medicare billing, California enrollment
  • 134 clinicians in this Medicare group
NPI 1356339543 (707) 459-6801

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 91304 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

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 Proscovia Mayanja's NPI number?

The NPI number for Proscovia Mayanja is 1184023830. It was assigned to this individual provider in the NPPES registry on August 19, 2014.

Where is Proscovia Mayanja located?

Proscovia Mayanja practices at 22560 Napa St, West Hills, CA 91304. The listed phone number is (818) 999-9112.

What is Proscovia Mayanja's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Proscovia Mayanja enrolled in Medicare?

Yes. Proscovia Mayanja is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Proscovia Mayanja's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Proscovia Mayanja reassigns Medicare benefits to 2 organizations: El Proyecto Del Barrio, Inc. (Winnetka, CA) and Willits Hospital Inc. (Willits, CA). 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 Proscovia Mayanja'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 Proscovia Mayanja was last updated on May 28, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.