Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Richard D Clark, RN ARNP CRNA

Certified Registered Nurse Anesthetist in Lansing, IL · enumerated 2005.

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

National Provider Identifier

1659355121

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Richard D Clark

Credential RN ARNP CRNA

Sex Male

Practice address Lansing, IL, 60438

Phone (708) 895-9450

Enumeration date Nov 30, 2005

Last updated in NPPES May 21, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 1484659051 (KS) Secondary

163W00000X Registered Nurse Nursing Service Providers · License 134677 (MO) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 54725 (KS) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 54725 (KS) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 134677 (MO) Secondary

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 09.006191 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
161280	Other	-	BCBS OF KANSAS
481192875	Other	-	HUMANA
P00155221	Other	-	RR MEDICARE
P13178	Other	-	PREMIER HEALTH PLANS
27862039	Other	-	BCBS OF KANSAS CITY
27862039	Other	-	PREFERRED HEALTH PROFESSI
27862039	Other	-	PREFERRED CARE BLUE
481192875	Other	-	UNITED HEALTH CARE
481192875	Other	-	COVENTRY
915697213	Medicaid	MO	-
481192875	Other	-	CIGNA
481192875	Other	-	AETNA
100385650C	Other	-	KANSAS MEDICAL ASSISTISTA
10001771600	Other	-	COMMUNITY HEALTH PLAN

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

Is NPI 1659355121 active?

Yes, as of the latest NPPES snapshot, NPI 1659355121 is active (record last updated 2010-05-21).

How do I verify Richard Clark's NPI record?

Cross-check NPI 1659355121 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-21.