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

Dr. Amos S Yang, MD

Anesthesiology Physician in Cupertino, CA · enumerated 2007.

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

National Provider Identifier

1255523007

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. Amos S Yang

Credential MD

Sex Male

Practice address Cupertino, CA, 95014

Phone (626) 272-7120

Fax (510) 250-7733

Enumeration date Aug 15, 2007

Last updated in NPPES Dec 29, 2021

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

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License A97982 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1255523007 active?

Yes, as of the latest NPPES snapshot, NPI 1255523007 is active (record last updated 2021-12-29).

How do I verify Amos Yang's NPI record?

Cross-check NPI 1255523007 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 2021-12-29.