James R. Penrose, DO
Internal Medicine Physician · Bakersfield, CA
James R. Penrose, DO is an internal medicine physician with a practice address in Bakersfield, California, and NPI 1831258458, issued on Dec 8, 2006. Check the license (California 20A5609, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James R. Penrose
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A5609 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3733 San Dimas St, Bakersfield, CA 93301
- Phone
- (800) 353-5400
- Enumerated
- Dec 8, 2006
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 3733 San Dimas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James R. Penrose in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5609Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
80 Medicare Part D claims for 25 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
James R. Penrose among 17,696 internal medicine physician records in California
James R. Penrose, DO is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
214 internal medicine physician records list a practice address in Bakersfield
They are 214 of the 11,539 NPPES records with a practice address in Bakersfield, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Bakersfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jennifer Abraham, MDBakersfield, CA 933011285650259
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- Rosie Boparai, MDBakersfield, CA 933011740226398
- Kevork Bouldoukian, M.D.Bakersfield, CA 933011720020464
- Chung- Kwang Chen, MDBakersfield, CA 933011083610273
- David Dougherty, M.D.Bakersfield, CA 933011205858917
- Jeffery Freesemann, MDBakersfield, CA 933011336156488
- Fakhruddin Hasta, M.D.Bakersfield, CA 933011316974694
Common questions
What is James R. Penrose, DO's NPI number?
James R. Penrose, DO's National Provider Identifier (NPI) is 1831258458, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James R. Penrose, DO located?
The NPPES record lists a practice address at 3733 San Dimas St, Bakersfield, CA, 93301. Phone: (800) 353-5400. Providers update this record themselves, so call before visiting.
How can I verify James R. Penrose, DO's license?
NPPES lists California license number 20A5609, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James R. Penrose, DO prescribe under Medicare Part D?
In 2024, James R. Penrose, DO had 80 Medicare Part D claims for 25 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is James R. Penrose, DO's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.