Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Olga A Merdiuszew, O.D.

Optometrist in Lancaster, PA · enumerated 2005 · practices at Conestoga Eye PC.

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

National Provider Identifier

1205831625

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Registry record

Entity type Individual (Type 1)

Name Olga A Merdiuszew

Credential O.D.

Sex Female

Practice address 2104 Spring Valley Rd, Lancaster, PA, 17601

Phone (717) 541-9700

Fax (717) 541-9705

Enumeration date Jun 14, 2005

Last updated in NPPES Feb 28, 2025

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OEG001031 (PA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1205831625 active?

Yes, as of the latest NPPES snapshot, NPI 1205831625 is active (record last updated 2025-02-28).

How do I verify Olga Merdiuszew's NPI record?

Cross-check NPI 1205831625 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

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David Silbert Ophthalmology Physician · Lancaster, PA NPI 1275593295 Hayley Woodall Optometrist · Lancaster, PA NPI 1124156526 Conestoga Eye PC Ophthalmology Physician · Lancaster, PA NPI 1952780520 Sara Berteramo Optometrist · Lancaster, PA NPI 1063300804

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-28.