Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gary A Greenberg, OD
Optometrist in Middletown, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447220652
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Registry record
Entity type Individual (Type 1)
Name Gary A Greenberg
Credential OD
Sex Male
Practice address 1093 N Union St, Middletown, PA, 17057
Phone (717) 944-4031
Enumeration date Jan 23, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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
How do I verify Gary Greenberg's NPI record?
Cross-check NPI 1447220652 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1447220652 active?
Yes, as of the latest NPPES snapshot, NPI 1447220652 is active (record last updated 2007-07-08).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.