Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael Stephen Kays

Behavior Analyst in Riverside, CA · enumerated 2011.

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

National Provider Identifier

1306145719

Verified

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Registry record

Entity type Individual (Type 1)

Name Michael Stephen Kays

Sex Male

Practice address 2155 Chicago Ave Ste 203, Riverside, CA, 92507

Phone (951) 357-6926

Fax (855) 568-2494

Enumeration date Mar 24, 2011

Last updated in NPPES Dec 30, 2021

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA21494 (CA) Secondary

103K00000X Behavior Analyst Behavioral Health & Social Service Providers Primary

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Michael Kays?

Michael Kays is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-30.