JAMES R. PENROSE DO
NPI 1831258458
Internal Medicine in Bakersfield, CA
About James R. Penrose Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES R. PENROSE DO (NPI 1831258458) is an individual internal medicine provider in Bakersfield, California, licensed in California (20A5609) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
James R. Penrose Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show James Penrose reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 5,228 clinicians in this Medicare group
Porterville, CA 93257
- Reassigned Medicare billing, California enrollment
- 159 clinicians in this Medicare group
West Hollywood, CA 90048
- Reassigned Medicare billing, California enrollment
- 175 clinicians in this Medicare group
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 914 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 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 93301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
BAKERSFIELD, CA 93301
BAKERSFIELD, CA 93301
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 James Penrose's NPI number?
The NPI number for James Penrose is 1831258458. It was assigned to this individual provider in the NPPES registry on December 8, 2006.
Where is James Penrose located?
James Penrose practices at 3733 San Dimas St, Bakersfield, CA 93301. The listed phone number is (800) 353-5400.
What is James Penrose's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is James Penrose enrolled in Medicare?
Yes. James Penrose is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for James Penrose's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Penrose reassigns Medicare benefits to 5 organizations: Southern California Permanente Medical Group (Bakersfield, CA), 24 On Physicians Of California, PC (Porterville, CA), Kansal Inc (West Hollywood, CA), Hospitalist Medicine Physicians Of California, Inc (Apple Valley, CA) and Inpatient Specialists Of California, PC (San Bernardino, 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 James Penrose'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 James Penrose was last updated on November 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# James R. Penrose, DO · NPI 1831258458
Internal Medicine physician in Bakersfield, California. Individual provider, active in the CMS NPPES registry since December 8, 2006.
## Identity
- **NPI:** 1831258458 (Entity type: Individual)
- **Enumerated:** December 8, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 20A5609 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3733 SAN DIMAS ST, Bakersfield, CA 93301-1407
- **Phone:** (800) 353-5400
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1861424376, Bakersfield, CA); 24 On Physicians Of California, PC (NPI 1730570565, Porterville, CA); Kansal Inc (NPI 1043510183, West Hollywood, CA); Hospitalist Medicine Physicians Of California, Inc (NPI 1184663965, Apple Valley, CA); Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 30, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1831258458) · Data from the CMS NPPES public registry.