Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Earl W Ferguson, M.D.

Specialist in Ridgecrest, CA · enumerated 2005.

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

National Provider Identifier

1760485494

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Registry record

Entity type Individual (Type 1)

Name Earl W Ferguson

Credential M.D.

Sex Male

Practice address Ridgecrest, CA, 93555

Phone (760) 499-3000

Fax (760) 499-3014

Enumeration date May 27, 2005

Last updated in NPPES Dec 19, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers · License G83290 (CA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
95-2082686	Other	CA	TAX ID
G83290	Other	CA	MEDICAL LICENSE
00G832900	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 specialty is Earl Ferguson?

Earl Ferguson is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-19.