Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William Henry Korthals III, MSW, LCSW

Clinical Social Worker in Myrtle Beach, SC · enumerated 2007 · practices at Charleston Vamc.

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

National Provider Identifier

1972721124

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Registry record

Entity type Individual (Type 1)

Name Mr. William Henry Korthals III

Credential MSW, LCSW

Sex Male

Practice address 1800 Airpark Dr, Myrtle Beach, SC, 29577

Phone (843) 301-3202

Enumeration date Apr 23, 2007

Last updated in NPPES Mar 21, 2025

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License Q1-0001104 (DE) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 061583 (NY) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 13050 (SC) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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

How do I verify William Korthals's NPI record?

Cross-check NPI 1972721124 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1972721124 active?

Yes, as of the latest NPPES snapshot, NPI 1972721124 is active (record last updated 2025-03-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-21.