William Irwin Brenner, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Los Angeles, CA
William Irwin Brenner, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Los Angeles, California, and NPI 1760770259, issued on Jul 18, 2011. Check the license (California G25702, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Irwin Brenner
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- G25702 CA
Self-reported in NPPES; status is on the state search - Practice location
- 757 Westwood Plz Ste 8501, Los Angeles, CA 90095
- Phone
- (310) 206-8232
- Enumerated
- Jul 18, 2011
- Record last updated
- Nov 18, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (310) 825-7473
- Medicaid ID
- 1760770259 CA
- Medicare enrollment
- Enrolled (PECOS I20121113000221); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1969
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 634 in California → Look up another NPI →
Also registered at 757 Westwood Plz Ste 8501
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Allison Chavarria, NPAcute Care Nurse Practitioner1750443537
- Lo Yu, FNP-BCPrimary Care Nurse Practitioner1386985547
Verify William Irwin Brenner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G25702Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $182.79
2 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- The Regents OF The University OF CaliforniaLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Irwin Brenner among 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California
William Irwin Brenner, M.D. is one of 634 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 75% of them.
- NPI issued2011 · 75% of these records are older, 21% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1969 · median 1997 among the 408 with a school on file
- Record last updated2019 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in California
There are 634 thoracic surgery (cardiothoracic vascular surgery) physician records in California.
All 634 in California → Every provider in Los Angeles → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Kelechi Abanobi, M.DLos Angeles, CA 900951720236953
- Abbas Ardehali, MDLos Angeles, CA 900951649205576
- Shyamasundar Balasubramanya, M.D.Los Angeles, CA 900951831343086
- Reshma Biniwale, MDLos Angeles, CA 900951972676120
- Bryan Burt, M.D.Los Angeles, CA 900951396902052
- Peter Downey, MDLos Angeles, CA 900951417272683
- Fardad Esmailian, MDLos Angeles, CA 900951861426314
- Elbert Holmes, MDLos Angeles, CA 900951821013947
Common questions
What is William Irwin Brenner, M.D.'s NPI number?
William Irwin Brenner, M.D.'s National Provider Identifier (NPI) is 1760770259, issued on Jul 18, 2011. An NPI identifies a provider in billing; it is not a license.
Where is William Irwin Brenner, M.D. located?
The NPPES record lists a practice address at 757 Westwood Plz Ste 8501, Los Angeles, CA, 90095. Phone: (310) 206-8232. Providers update this record themselves, so call before visiting.
How can I verify William Irwin Brenner, M.D.'s license?
NPPES lists California license number G25702, 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.
What is William Irwin Brenner, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.