Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stanley Z Cowen, M.D.

Surgery Physician in Lancaster, CA · enumerated 2007.

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

National Provider Identifier

1619091931

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Registry record

Entity type Individual (Type 1)

Name Dr. Stanley Z Cowen

Credential M.D.

Sex Male

Practice address 43845 10th St W, Suite 2a, Lancaster, CA, 93534

Phone (818) 709-8161

Fax (818) 709-8160

Enumeration date Mar 19, 2007

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License G17178 (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
00G171780	Other	CA	BLUE SHIELD
ZZZ51689Z	Other	CA	BLUE SHIELD
00G171780	Medicaid	CA	-
G17178	Other	CA	LICENSE

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

Is NPI 1619091931 active?

Yes, as of the latest NPPES snapshot, NPI 1619091931 is active (record last updated 2007-07-09).

How do I verify Stanley Cowen's NPI record?

Cross-check NPI 1619091931 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.