Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Miss Jaynette Monique Underhill, MA

Case Manager/Care Coordinator in Vallejo, CA · enumerated 2007.

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

National Provider Identifier

1831302843

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Registry record

Entity type Individual (Type 1)

Name Miss Jaynette Monique Underhill

Credential MA

Sex Female

Practice address 140 Britannia Ct, Vallejo, CA, 94591

Phone (707) 552-3453

Enumeration date May 7, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other 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

Where does Jaynette Underhill practice?

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

What is the NPI number for Jaynette Underhill?

The National Provider Identifier (NPI) for Jaynette Underhill is 1831302843, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.