Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melissa Hisako Reagan

Medical Physician Assistant in Fairfield, CA · enumerated 2020.

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

National Provider Identifier

1225668205

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Registry record

Entity type Individual (Type 1)

Name Melissa Hisako Reagan

Sex Female

Practice address 1261 Travis Blvd Ste 100, Fairfield, CA, 94533

Phone (707) 422-0543

Enumeration date Jan 18, 2020

Last updated in NPPES Jan 18, 2020

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License Z9T4J4S3 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
9885321	Other	CA	KAISER

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 1225668205 active?

Yes, as of the latest NPPES snapshot, NPI 1225668205 is active (record last updated 2020-01-18).

How do I verify Melissa Reagan's NPI record?

Cross-check NPI 1225668205 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-18.