Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Jessica Guarnieri, BS, RDH
Dental Hygienist in Hartford, CT · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821558263
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Registry record
Entity type Individual (Type 1)
Name Mrs. Jessica Guarnieri
Credential BS, RDH
Sex Female
Practice address 470 Maple Ave, Hartford, CT, 06114
Phone (860) 695-7724
Enumeration date Mar 21, 2019
Last updated in NPPES Mar 21, 2019
Taxonomy & licenses
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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Jessica Guarnieri?
Jessica Guarnieri is registered in NPPES with the primary taxonomy of Dental Hygienist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-21.