Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephanie Messina, PA

Physician Assistant in San Francisco, CA · enumerated 2011.

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

National Provider Identifier

1912202987

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Stephanie Messina

Credential PA

Sex Female

Practice address 2340 Clay St Fl 6, San Francisco, CA, 94115

Phone (424) 444-7399

Fax (424) 253-0814

Enumeration date Jan 21, 2011

Last updated in NPPES Jun 30, 2026

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA21409 (CA) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

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

Where does Stephanie Messina practice?

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

What is the NPI number for Stephanie Messina?

The National Provider Identifier (NPI) for Stephanie Messina is 1912202987, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-30.