Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Johnny Chao

Registered Respiratory Therapist in San Leandro, CA · enumerated 2023.

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

National Provider Identifier

1265213920

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Registry record

Entity type Individual (Type 1)

Name Johnny Chao

Sex Male

Practice address 2500 Merced St, San Leandro, CA, 94577

Phone (510) 454-1000

Enumeration date Oct 9, 2023

Last updated in NPPES Oct 9, 2023

Taxonomy & licenses

227900000X Registered Respiratory Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 41903 (CA) Primary

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

What specialty is Johnny Chao?

Johnny Chao is registered in NPPES with the primary taxonomy of Registered Respiratory Therapist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-09.