Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron Brown, OTR/L

Q: What is the NPI number for Aaron Brown?

The National Provider Identifier (NPI) for Aaron Brown is 1598637654, a Type 1 (individual) record in the CMS NPPES registry.

Occupational Therapist in Fontana, CA · enumerated 2025.

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

National Provider Identifier

1598637654

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Registry record

Entity type Individual (Type 1)

Name Aaron Brown

Credential OTR/L

Sex Male

Practice address 9961 Sierra Ave, Fontana, CA, 92335

Phone (833) 574-2273

Enumeration date Sep 18, 2025

Last updated in NPPES Jun 24, 2026

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 25777 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Aaron Brown?

The National Provider Identifier (NPI) for Aaron Brown is 1598637654, a Type 1 (individual) record in the CMS NPPES registry.

Where does Aaron Brown practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-24.