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Walter R Obrien MD Inc A Medical Corporation

Sports Medicine (Family Medicine) Physician in Los Angeles, CA · enumerated 2010 · authorized official Walter O'Brien, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1851623029

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Registry record

Entity type Organization (Type 2)
Legal business name Walter R Obrien MD Inc A Medical Corporation
Other name <Unavail>
Practice address 11710 Wilshire Blvd, Los Angeles, CA, 90025
Phone (310) 477-7276
Fax (310) 477-5148
Enumeration date Feb 12, 2010
Last updated in NPPES Mar 7, 2023

Taxonomy & classification

207QS0010X Sports Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License G63193 (CA) Primary

Authorized official

Name Walter O'Brien
Title Owner
Phone (310) 477-7276

Other identifiers

Identifier Type State Issuer
00G631931 Medicaid CA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-03-07. Verify at npiregistry.cms.hhs.gov.
Where is Walter R Obrien MD Inc A Medical Corporation located?
The practice location on file with NPPES is in Los Angeles, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.