Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

George A. Johnson, MD

Pediatrics Physician in Mountain View, CA · enumerated 2006 · practices at Kaiser Foundation Health Plan Inc.

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

National Provider Identifier

1124104054

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Registry record

Entity type Individual (Type 1)

Name George A. Johnson

Credential MD

Sex Male

Practice address 555 Castro St, Mountain View, CA, 94041

Phone (650) 903-3000

Enumeration date Oct 31, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License G61753 (CA) 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
00G617530	Medicaid	CA	-

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 is the NPI number for George Johnson?

The National Provider Identifier (NPI) for George Johnson is 1124104054, a Type 1 (individual) record in the CMS NPPES registry.

Where does George Johnson practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.