Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diane Cassayre, OTR/L

Occupational Therapist in Napa, CA · enumerated 2021.

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

National Provider Identifier

1649930736

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Registry record

Entity type Individual (Type 1)

Name Diane Cassayre

Credential OTR/L

Sex Female

Practice address 2100 Napa Vallejo Hwy, Napa, CA, 94558

Phone (707) 253-5000

Enumeration date Dec 30, 2021

Last updated in NPPES Dec 30, 2021

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 2617 (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.

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Frequently asked questions

How do I verify Diane Cassayre's NPI record?

Cross-check NPI 1649930736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1649930736 active?

Yes, as of the latest NPPES snapshot, NPI 1649930736 is active (record last updated 2021-12-30).

Other providers at this practice address

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Amardeep Sahota Internal Medicine Physician · Napa, CA NPI 1831192103 Claire Fry Psychiatric Pharmacist · Napa, CA NPI 1538151980 Lane Melgarejo Internal Medicine Physician · Napa, CA NPI 1588657308 Andrew Sawicki Podiatrist · Napa, CA NPI 1306834163 Ernest Hanes Psychiatry Physician · Napa, CA NPI 1659361574 Richard Frishman Psychiatry Physician · Napa, CA NPI 1174507347 David Morse Podiatrist · Napa, CA NPI 1871579748 Katherine Warburton Forensic Psychiatry Physician · Napa, CA NPI 1295709277

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