Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ryan K Ah San, PA-C

Medical Physician Assistant in Rancho Santa Margarita, CA · enumerated 2008.

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

National Provider Identifier

1013181346

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Registry record

Entity type Individual (Type 1)

Name Ryan K Ah San

Credential PA-C

Sex Male

Practice address 29472 Avenida De Las Bandera, Rancho Santa Margarita, CA, 92688

Phone (949) 459-9968

Fax (949) 766-2565

Enumeration date Apr 17, 2008

Last updated in NPPES Mar 9, 2016

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA15744 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
PA15744	Other	CA	STATE 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

How do I verify Ryan Ah San's NPI record?

Cross-check NPI 1013181346 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1013181346 active?

Yes, as of the latest NPPES snapshot, NPI 1013181346 is active (record last updated 2016-03-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-09.