Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen Erwin Prover, M.D.

Specialist in Torrance, CA · enumerated 2006.

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

National Provider Identifier

1902860539

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Registry record

Entity type Individual (Type 1)

Name Stephen Erwin Prover

Credential M.D.

Sex Male

Practice address 23326 Hawthorne Blvd, Suite #375, Torrance, CA, 90505

Phone (310) 373-0527

Fax (310) 373-6915

Enumeration date Apr 12, 2006

Last updated in NPPES May 7, 2009

Taxonomy & licenses

174400000X Specialist Other Service Providers · License A034057 (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
W9172	Other	CA	MEDICARE PTAN

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

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.

What specialty is Stephen Prover?

Stephen Prover 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-07.