Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Randal E Williams, P.A.-C

Medical Physician Assistant in Castle Rock, CO · enumerated 2006.

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

National Provider Identifier

1811966385

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Registry record

Entity type Individual (Type 1)

Name Mr. Randal E Williams

Credential P.A.-C

Sex Male

Practice address 1001 S Perry St, Suite: 101b, Castle Rock, CO, 80104

Phone (303) 688-2228

Fax (303) 663-0640

Enumeration date Mar 16, 2006

Last updated in NPPES Apr 24, 2014

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 15-00965 (KS) Secondary

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA.0001279 (CO) Primary

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA2010-0073 (NM) Secondary

Other identifiers

Identifier	Type	State	Issuer
71577289	Medicaid	NM	-
200362810A	Medicaid	KS	-
95256237	Medicaid	CO	-

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

Is NPI 1811966385 active?

Yes, as of the latest NPPES snapshot, NPI 1811966385 is active (record last updated 2014-04-24).

How do I verify Randal Williams's NPI record?

Cross-check NPI 1811966385 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-04-24.