Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Henry Stanley Grzyb, DMD
Dentist in Westport, CT · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1497961411
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Registry record
Entity type Individual (Type 1)
Name Henry Stanley Grzyb
Credential DMD
Sex Male
Practice address 1460 Post Road East, Westport, CT, 06880
Phone (203) 254-8008
Fax (203) 254-3393
Enumeration date May 15, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD credential
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
Where does Henry Grzyb practice?
The practice location on file with NPPES is in Westport, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Henry Grzyb?
The National Provider Identifier (NPI) for Henry Grzyb is 1497961411, 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 2007-07-08.