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

Mr. Charles Richard Robson, L.M.S.W.

Social Worker in Marshalltown, IA · enumerated 2012.

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

National Provider Identifier

1033472675

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Registry record

Entity type Individual (Type 1)

Name Mr. Charles Richard Robson

Credential L.M.S.W.

Sex Male

Practice address Marshalltown, IA, 50158

Phone (641) 753-4021

Fax (641) 753-4025

Enumeration date Jun 19, 2012

Last updated in NPPES Apr 9, 2026

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 · License 007985 (IA) 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 Charles Robson practice?

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

What is the NPI number for Charles Robson?

The National Provider Identifier (NPI) for Charles Robson is 1033472675, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-09.