Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Regional Diagnostics, LLC

Q: What is the NPI number for Regional Diagnostics, LLC?

The NPI for Regional Diagnostics, LLC is 1144218462, a Type 2 (organization) record in the CMS NPPES registry.

Radiology Clinic/Center in South Holland, IL · enumerated 2005 · authorized official Ron Clark, Director, Managed Care.

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

National Provider Identifier

1144218462

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Registry record

Entity type Organization (Type 2)

Legal business name Regional Diagnostics, LLC

Practice address 16236 Prince Dr, South Holland, IL, 60473

Phone (708) 333-1400

Fax (708) 333-0110

Enumeration date Oct 11, 2005

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

261QR0200X Radiology Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Ron Clark

Title Director, Managed Care

Phone (216) 464-8484

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

What is the NPI number for Regional Diagnostics, LLC?

The NPI for Regional Diagnostics, LLC is 1144218462, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Regional Diagnostics, LLC?

NPPES lists Ron Clark (Director, Managed Care) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.