Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Wilshire Oncology Medical Group, Inc.

Specialist in Pasadena, CA · enumerated 2007 · authorized official Linda Bosserman, President.

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

National Provider Identifier

1346429362

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Registry record

Entity type Organization (Type 2)

Legal business name Wilshire Oncology Medical Group, Inc.

Practice address 50 Bellefontaine St, Suite 201, Pasadena, CA, 91105

Phone (626) 844-8999

Fax (626) 844-8995

Enumeration date Oct 26, 2007

Last updated in NPPES May 7, 2008

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Linda Bosserman

Title President

Phone (909) 593-4333

Other identifiers

Identifier	Type	State	Issuer
GR0002883	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Wilshire Oncology Medical Group, Inc. located?

The practice location on file with NPPES is in Pasadena, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-05-07. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-07.