Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Ann M. Guerrieri-Marsh, M.S.N.,APRN,BC

Adult Psychiatric/Mental Health Registered Nurse in San Antonio, TX · enumerated 2006.

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

National Provider Identifier

1306949292

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Registry record

Entity type Individual (Type 1)

Name Ms. Ann M. Guerrieri-Marsh

Credential M.S.N.,APRN,BC

Sex Female

Practice address San Antonio, TX, 78229

Phone (210) 617-5300

Fax (210) 321-2728

Enumeration date Sep 6, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WP0809X Adult Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License 212067L (PA) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
212067L	Other	PA	RN
454760	Other	TX	RN

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

How do I verify Ann Guerrieri-Marsh's NPI record?

Cross-check NPI 1306949292 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1306949292 active?

Yes, as of the latest NPPES snapshot, NPI 1306949292 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.