Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. James Walker Chalmers

Specialist in Placerville, CA · enumerated 2012.

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

National Provider Identifier

1902161813

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Registry record

Entity type Individual (Type 1)

Name Mr. James Walker Chalmers

Sex Male

Practice address 2844 Coloma St, Placerville, CA, 95667

Phone (530) 642-1715

Fax (530) 642-2064

Enumeration date Jul 6, 2012

Last updated in NPPES Jul 6, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 10726 (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

Where does James Chalmers practice?

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

What is the NPI number for James Chalmers?

The National Provider Identifier (NPI) for James Chalmers is 1902161813, 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 2012-07-06.