Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joan Marie Spencer, RRT

Q: What is the NPI number for Joan Spencer?

The National Provider Identifier (NPI) for Joan Spencer is 1669943411, a Type 1 (individual) record in the CMS NPPES registry.

Registered Respiratory Therapist in San Jose, CA · enumerated 2018.

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

National Provider Identifier

1669943411

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Registry record

Entity type Individual (Type 1)

Name Joan Marie Spencer

Credential RRT

Sex Female

Practice address 270 International Cir, San Jose, CA, 95119

Phone (408) 972-7000

Enumeration date Dec 5, 2018

Last updated in NPPES Dec 5, 2018

Taxonomy & licenses

227900000X Registered Respiratory Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 2323 (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

Where does Joan Spencer practice?

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

What is the NPI number for Joan Spencer?

The National Provider Identifier (NPI) for Joan Spencer is 1669943411, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-12-05.