CATHERINE JIMMERSON
NPI 1275929879
Nurse Practitioner in Covina, CA
About Catherine Jimmerson NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE JIMMERSON (NPI 1275929879) is an individual nurse practitioner in Covina, California, licensed in California (95002214) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
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
Catherine Jimmerson 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 Reassignments
3Medicare enrollment records show Catherine Jimmerson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Martell, CA 95645
- Reassigned Medicare billing, California enrollment
- 101 clinicians in this Medicare group
Sacramento, CA 95817
- Reassigned Medicare billing, California enrollment
- 2,570 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 91723 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COVINA, CA 91723
COVINA, CA 91723
COVINA, CA 91723
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 Catherine Jimmerson's NPI number?
The NPI number for Catherine Jimmerson is 1275929879. It was assigned to this individual provider in the NPPES registry on April 9, 2015. The provider is also known as Catherine Fielding Np.
Where is Catherine Jimmerson located?
Catherine Jimmerson practices at 210 W San Bernardino Rd, Covina, CA 91723. The listed phone number is (626) 331-7331.
What is Catherine Jimmerson's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Catherine Jimmerson enrolled in Medicare?
Yes. Catherine Jimmerson 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 organizations bill Medicare for Catherine Jimmerson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Jimmerson reassigns Medicare benefits to 3 organizations: Permanente Medical Group Inc (Santa Clara, CA), Wellspace Health (Martell, CA) and Regents Of The Univ Of Ca (Sacramento, 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 Catherine Jimmerson'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 Catherine Jimmerson was last updated on October 4, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Catherine Jimmerson · NPI 1275929879
Nurse Practitioner physician in Covina, California. Individual provider, active in the CMS NPPES registry since April 9, 2015.
## Identity
- **NPI:** 1275929879 (Entity type: Individual)
- **Enumerated:** April 9, 2015
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 95002214 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 210 W SAN BERNARDINO RD, Covina, CA 91723-1515
- **Phone:** (626) 331-7331
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA); Wellspace Health (NPI 1225550874, Martell, CA); Regents Of The Univ Of Ca (NPI 1447423959, Sacramento, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** October 4, 2020
---
Source: [NPI Profile](https://npiprofile.com/npi/1275929879) · Data from the CMS NPPES public registry.