Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Greg Leszek, O.D.
Optometrist in Erie, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1386714806
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Registry record
Entity type Individual (Type 1)
Name Greg Leszek
Credential O.D.
Sex Male
Practice address 2240 E 38th St, Erie, PA, 16510
Phone (814) 824-3937
Fax (814) 824-6608
Enumeration date Nov 9, 2006
Last updated in NPPES Jul 21, 2022
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
What specialty is Greg Leszek?
Greg Leszek is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Zengling Peng Family Medicine Physician · Erie, PA NPI 1174501357 Mark Masteller Family Medicine Physician · Erie, PA NPI 1861470163 Saint Vincent Medical Education and Research Institute Family Medicine Physician · Erie, PA NPI 1528148293 Leonardi Group, Inc Eyewear Supplier · Erie, PA NPI 1598938169 Saint Vincent Medical Education and Non-Pharmacy Dispensing Site · Erie, PA NPI 1487963534 Michelle Donovan Optician · Erie, PA NPI 1932509510 Aeg Ohio Professional PC Optometrist · Erie, PA NPI 1982203089
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.