Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alan C. Westeren, M.D.

Ophthalmology Physician in San Diego, CA · enumerated 2006.

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

National Provider Identifier

1962513135

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Registry record

Entity type Individual (Type 1)

Name Alan C. Westeren

Credential M.D.

Sex Male

Practice address 16486 Bernardo Center Dr, Suite C-150, San Diego, CA, 92128

Phone (858) 673-2277

Fax (858) 451-3733

Enumeration date Aug 31, 2006

Last updated in NPPES Oct 21, 2009

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G79738 (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
G79738	Other	CA	CA STATE MEDICAL LICENSE#
00G797380	Medicaid	CA	-
11179547	Other	CA	CAQH PROVIDER ID#
MD-072371-L	Other	PA	PA STATE MEDICAL 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.

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Frequently asked questions

Where does Alan Westeren practice?

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

What is the NPI number for Alan Westeren?

The National Provider Identifier (NPI) for Alan Westeren is 1962513135, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-21.