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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Darwin St. Clair Jr., BA

Case Manager/Care Coordinator in Lander, WY · enumerated 2021.

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

National Provider Identifier

1639769417

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Registry record

Entity type Individual (Type 1)
Name Mr. Darwin St. Clair Jr.
Credential BA
Sex Male
Practice address 431 Main St, Lander, WY, 82520
Fax (307) 332-1610
Enumeration date Jan 25, 2021
Last updated in NPPES Jan 25, 2021

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator 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

Where does Darwin St. Clair practice?
The practice location on file with NPPES is in Lander, WY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Darwin St. Clair?
The National Provider Identifier (NPI) for Darwin St. Clair is 1639769417, 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 2021-01-25.