Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

James Clayton Simpson

Peer Specialist in Rock Hill, SC · enumerated 2026.

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

National Provider Identifier

1528991114

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Registry record

Entity type Individual (Type 1)

Name James Clayton Simpson

Sex Male

Practice address 199 Herlong Ave S, Rock Hill, SC, 29732

Phone (803) 324-1800

Fax (803) 328-3831

Enumeration date Jun 4, 2026

Last updated in NPPES Jun 4, 2026

Taxonomy & licenses

175T00000X Peer Specialist Other 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.

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Frequently asked questions

What is the NPI number for James Simpson?

The National Provider Identifier (NPI) for James Simpson is 1528991114, a Type 1 (individual) record in the CMS NPPES registry.

Where does James Simpson practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-04.