NPI Portal NPI Lookup & Verification

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

Peter Youn, M.D.

Specialist in Los Gatos, CA · enumerated 2006.

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

National Provider Identifier

1285669762

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Registry record

Entity type Individual (Type 1)
Name Peter Youn
Credential M.D.
Sex Male
Practice address Los Gatos, CA, 95032
Phone (408) 884-8077
Fax (408) 827-4017
Enumeration date Jul 12, 2006
Last updated in NPPES Nov 27, 2019

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

Taxonomy & licenses

174400000X Specialist Other Service Providers · License BY5169075 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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Frequently asked questions

What is the NPI number for Peter Youn?
The National Provider Identifier (NPI) for Peter Youn is 1285669762, a Type 1 (individual) record in the CMS NPPES registry.
Where does Peter Youn practice?
The practice location on file with NPPES is in Los Gatos, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-11-27.