NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr. Gemma S. Stirba, LLC

Optometrist in Groton, CT · enumerated 2008 · authorized official Gemma Stirba, Owner.

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

National Provider Identifier

1508038605

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Dr. Gemma S. Stirba, LLC
Practice address 150 Gold Star Hwy, Groton, CT, 06340
Fax (860) 449-0421
Enumeration date Mar 28, 2008
Last updated in NPPES Apr 9, 2008

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 002686 (CT) Primary

Authorized official

Name Gemma Stirba
Title Owner

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-04-09. Verify at npiregistry.cms.hhs.gov.
Where is Dr. Gemma S. Stirba, LLC located?
The practice location on file with NPPES is in Groton, CT.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-09.