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

Dr. Ralph L Clarke, PHARM D.

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in St George, UT · enumerated 2012.

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

National Provider Identifier

1720342496

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Registry record

Entity type Individual (Type 1)

Name Dr. Ralph L Clarke

Credential PHARM D.

Sex Male

Practice address St George, UT, 84790

Phone (435) 251-2400

Fax (435) 251-2413

Enumeration date Jun 27, 2012

Last updated in NPPES Jun 27, 2012

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

Taxonomy & licenses

1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Pharmacy Service Providers · License 131668-1701 (UT) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Ralph Clarke's NPI record?

Cross-check NPI 1720342496 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1720342496 active?

Yes, as of the latest NPPES snapshot, NPI 1720342496 is active (record last updated 2012-06-27).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-27.