Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William Stephen Bush, M.D., A Medical Corporation

Anatomic Pathology & Clinical Pathology Physician in Joshua Tree, CA · enumerated 2005 · authorized official William Bush, President.

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

National Provider Identifier

1578557054

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Registry record

Entity type Organization (Type 2)

Legal business name William Stephen Bush, M.D., A Medical Corporation

Practice address 6601 White Feather Rd, Dept of Pathology, Joshua Tree, CA, 92252

Phone (760) 366-6273

Fax (760) 366-6461

Enumeration date Sep 9, 2005

Last updated in NPPES Jan 30, 2014

Taxonomy & classification

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name William Bush

Title President

Phone (760) 366-6273

Other identifiers

Identifier	Type	State	Issuer
00G390650	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

What is the NPI number for William Stephen Bush, M.D., A Medical Corporation?

The NPI for William Stephen Bush, M.D., A Medical Corporation is 1578557054, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for William Stephen Bush, M.D., A Medical Corporation?

NPPES lists William Bush (President) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-30.