William Brien, M.D.
Specialist · Los Angeles, CA
William Brien, M.D. is a specialist with a practice address in Los Angeles, California, and NPI 1447294632, issued on Jun 16, 2006. Check the license (California G53111, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Brien
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- G53111 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8700 Beverly Blvd, Los Angeles, CA 90048
- Phone
- (310) 967-1884
- Enumerated
- Jun 16, 2006
- Record last updated
- Sep 4, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (310) 967-1744
- Medicare enrollment
- Enrolled (PECOS I20050325000747); may accept Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 8700 Beverly Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shahrzad Arya, MDStudent in an Organized Health Care Education/Training Program1144080250
Verify William Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G53111Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $34.56
1 payment: food and beverage; the largest payer was Intuitive Surgical, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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.
William Brien among 5,749 specialist records in California
William Brien, M.D. is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1983 · median 1989 among the 1,075 with a school on file
- Record last updated2013 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Los Angeles → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Alexander Allins, M.D.Los Angeles, CA 900481033193016
- Denise Barbuto, M.D.West Hollywood, CA 900481013910983
- Jane Davis, M.D.Los Angeles, CA 900481659354504
- Stephen Geller, M.D.West Hollywood, CA 900481619979762
- Carla Herriford, M.D.Los Angeles, CA 900481114910163
- Lee-Chaun Kao, M.D.Los Angeles, CA 900481588647036
- Theodore Khalili, M.D.Los Angeles, CA 900481023092103
- Renu Khurana, MDWest Hollywood, CA 900481902802358
Common questions
What is William Brien, M.D.'s NPI number?
William Brien, M.D.'s National Provider Identifier (NPI) is 1447294632, issued on Jun 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Brien, M.D. located?
The NPPES record lists a practice address at 8700 Beverly Blvd, Los Angeles, CA, 90048. Phone: (310) 967-1884. Providers update this record themselves, so call before visiting.
How can I verify William Brien, M.D.'s license?
NPPES lists California license number G53111, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
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.