Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. George Dennis Adrian, O.D.
Optometrist in Groton, CT · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659337145
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Registry record
Entity type Individual (Type 1)
Name Dr. George Dennis Adrian
Credential O.D.
Sex Male
Practice address 1041 Poquonnock Rd, Groton, CT, 06340
Phone (860) 445-1000
Fax (860) 445-3347
Enumeration date Apr 24, 2006
Last updated in NPPES Dec 11, 2014
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 06-1606726 | Other | CT | TAX ID |
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 NPI 1659337145 active?
Yes, as of the latest NPPES snapshot, NPI 1659337145 is active (record last updated 2014-12-11).
How do I verify George Adrian's NPI record?
Cross-check NPI 1659337145 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Marc Kallinen Optometrist · Groton, CT NPI 1184056640 Southeast Connecticut Eye Care, LLC Ophthalmology Physician · Groton, CT NPI 1326568502 Kallinen Eye Care, LLC Optometrist · Groton, CT NPI 1114582129 Pamela Nardella Optometrist · Groton, CT NPI 1407454473 Jessica Fretto Optometrist · Groton, CT NPI 1063010668 Coastal Counseling LLC Community/Behavioral Health Agency · Groton, CT NPI 1699443168
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-11.