Miss Jaynette Monique Underhill, MA

Miss Jaynette Monique Underhill is a Case Manager/Care Coordinator provider (Case Manager/Care Coordinator) practicing in Vallejo, CA, registered in the NPPES registry with NPI 1831302843 since 2007.

✓ Active NPI ✓ Valid NPI checksum

NPI	1831302843
Entity type	Individual (Type 1)
Name	Miss Jaynette Monique Underhill
Credential	MA
Sex	Female
Practice address	140 BRITANNIA CT, Vallejo, CA, 94591
Phone	7075523453
Enumeration date	2007-05-07
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
171M00000X	Case Manager/Care Coordinator	Primary	—	—

Copy-ready billing details

Provider: Jaynette Underhill, MA
NPI: 1831302843
Taxonomy: 171M00000X (Case Manager/Care Coordinator)
Address: 140 BRITANNIA CT, Vallejo, CA, 94591

Verify this record

Cross-check NPI 1831302843 against the authoritative CMS record: view Miss Jaynette Monique Underhill on the official NPPES registry .

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 or validate an NPI number.

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 2026-07-11. Provider record last updated 2007-07-08.