Registry data as of Aug 27, 2026

Louis Brenner, M.D.

Family Medicine Physician · Upland, CA

Louis Brenner, M.D. is a family medicine physician with a practice address in Upland, California, and NPI 1003852815, issued on Jun 21, 2006. Check the license (California G36509, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1003852815
Name
Louis Brenner
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
G36509 CA
Self-reported in NPPES; status is on the state search
Practice location
1113 Alta Ave, Upland, CA 91786
Phone
(909) 949-8000
Enumerated
Jun 21, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1113 Alta Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Richard Armour, D.OFamily Medicine Physician1366488215
  2. Trisna Gozali, NP-CFamily Nurse Practitioner1326423922
  3. Angie LingMedical Physician Assistant1922643931
  4. Mary Jane Mancuso, FNPFamily Nurse Practitioner1295922045
  5. Julie Rowe, FNPNurse Practitioner1679633762
  6. Mickie Schuerger, FNPFamily Nurse Practitioner1518492735

Verify Louis Brenner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G36509
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

93% fewer Medicare Part D claims than the average family medicine physician in 2024

253 Medicare Part D claims for 123 beneficiaries, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D.

  1. Louis Brenner253
  2. Specialty average3,519

Most prescribed

  1. Atorvastatin Calcium22 claims
  2. Losartan Potassium14 claims
  3. Jardiance12 claims
  4. Amlodipine Besylate11 claims
  5. Levothyroxine Sodium11 claims

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.

One hospital or facility affiliation

  1. Providence St Joseph Medical CenterPolson, MT · Critical Access Hospitals

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

35 family medicine physician records list a Upland practice address

They are 35 of the 1,846 NPPES records with a Upland practice address, and 16,272 family medicine physician records in California.

Other family medicine physician records in California

  1. Omer Aba-Omer, MDSanta Monica, CA1649702093
  2. Michelle Ababa, MDWilmington, CA1710922513
  3. Anna Tzeitel Abalos, MDRoseville, CA1720200017
  4. Adan Abarca, MDAnaheim, CA1760553689
  5. Vanessa Abarca, DOVentura, CA1952040859
  6. Lorraine Abate, M.D.Sacramento, CA1104840008
  7. Robert Abatecola, MDCastro Valley, CA1669551719
  8. Romeo Abaya, M.D.Cottonwood, CA1598053506
  9. Effiem Abbah, MD, MPHSan Francisco, CA1821185133
  10. Khuzeman Abbasi, MDSanta Rosa, CA1841979952

Common questions

What is Louis Brenner, M.D.'s NPI number?

Louis Brenner, M.D.'s National Provider Identifier (NPI) is 1003852815, issued on Jun 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Louis Brenner, M.D. located?

The NPPES record lists a practice address at 1113 Alta Ave, Upland, CA, 91786. Phone: (909) 949-8000. Providers update this record themselves, so call before visiting.

How can I verify Louis Brenner, M.D.'s license?

NPPES lists California license number G36509, 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 Louis Brenner, M.D. prescribe under Medicare Part D?

In 2024, Louis Brenner, M.D. had 253 Medicare Part D claims for 123 beneficiaries; the average among family medicine physician prescribers was 3,519. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.