Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stanley R. Klein, M.D.

Vascular Surgery Physician in Torrance, CA · enumerated 2006 · practices at Prohealth Partners A Medical Group.

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

National Provider Identifier

1902869662

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Registry record

Entity type Individual (Type 1)

Name Stanley R. Klein

Credential M.D.

Sex Male

Practice address 21840 Normandie Ave, Ste. 700, Torrance, CA, 90502

Phone (310) 222-5189

Fax (310) 782-6786

Enumeration date Apr 11, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License G34332 (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
00G343320	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

What specialty is Stanley Klein?

Stanley Klein is registered in NPPES with the primary taxonomy of Vascular Surgery Physician. 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 2007-07-09.