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

Isaiah Daniel Clark

Q: What is the NPI number for Isaiah Clark?

The National Provider Identifier (NPI) for Isaiah Clark is 1861092447, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Exercise Physiologist in Riverside, CA · enumerated 2020.

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

National Provider Identifier

1861092447

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Registry record

Entity type Individual (Type 1)

Name Isaiah Daniel Clark

Sex Male

Practice address Riverside, CA, 92508

Phone (951) 215-6829

Fax (951) 246-0734

Enumeration date Oct 31, 2020

Last updated in NPPES Jun 3, 2025

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

Taxonomy & licenses

224Y00000X Clinical Exercise Physiologist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 1066261 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
872340	Other	CA	AMERICAN COLLEGE OF SPORTS MEDICINE

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

Where does Isaiah Clark practice?

The practice location on file with NPPES is in Riverside, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Isaiah Clark?

The National Provider Identifier (NPI) for Isaiah Clark is 1861092447, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-03.