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

Mr. Christopher Martin Sims, MSW LCSW

Social Worker in Chico, CA · enumerated 2007.

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

National Provider Identifier

1558407783

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Registry record

Entity type Individual (Type 1)

Name Mr. Christopher Martin Sims

Credential MSW LCSW

Sex Male

Practice address Chico, CA, 95926

Phone (530) 570-6686

Fax (530) 898-1677

Enumeration date Jan 29, 2007

Last updated in NPPES Jul 12, 2022

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

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers 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 Christopher Sims practice?

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

What is the NPI number for Christopher Sims?

The National Provider Identifier (NPI) for Christopher Sims is 1558407783, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Kathryn Wendt Clinical Social Worker · Chico, CA NPI 1043245228

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-12.