Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Irene J. Buno-Brion, M.D.

Dermatology Physician in San Marcos, CA · enumerated 2006.

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

National Provider Identifier

1497704381

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Registry record

Entity type Individual (Type 1)

Name Irene J. Buno-Brion

Credential M.D.

Sex Female

Practice address 400 Craven Rd, San Marcos, CA, 92078

Phone (800) 290-5000

Enumeration date May 8, 2006

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License G83987 (CA) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License MD00036768 (WA) 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
159258	Other	WA	LABOR & INDUSTRIES
1153BU	Other	-	REGENCE BLUESHIELD
8239014	Medicaid	WA	-
070016744	Other	-	RAILROAD MEDICARE
7176003	Other	-	AETNA

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 Irene Buno-Brion practice?

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

What is the NPI number for Irene Buno-Brion?

The National Provider Identifier (NPI) for Irene Buno-Brion is 1497704381, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.