NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jessica Diaz, RDH

Dental Hygienist in Sun Prairie, WI · enumerated 2016.

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

National Provider Identifier

1861849945

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Jessica Diaz
Credential RDH
Sex Female
Practice address 1270 W Main St, Sun Prairie, WI, 53590
Phone (608) 825-7100
Fax (608) 837-9134
Enumeration date May 19, 2016
Last updated in NPPES May 19, 2016

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License 1002640-16 (WI) 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 Jessica Diaz practice?
The practice location on file with NPPES is in Sun Prairie, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jessica Diaz?
The National Provider Identifier (NPI) for Jessica Diaz is 1861849945, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-19.