Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William W Ferguson, M.D.

Family Medicine Physician in Ridgecrest, CA · enumerated 2005.

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

National Provider Identifier

1033112768

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Registry record

Entity type Individual (Type 1)

Name William W Ferguson

Credential M.D.

Sex Male

Practice address 1041 N China Lake Blvd, B, Ridgecrest, CA, 93555

Phone (760) 446-6404

Fax (760) 446-6415

Enumeration date May 27, 2005

Last updated in NPPES May 2, 2013

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License C42555 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

What is the NPI number for William Ferguson?

The National Provider Identifier (NPI) for William Ferguson is 1033112768, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Ferguson practice?

The practice location on file with NPPES is in Ridgecrest, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-02.