Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ophthalmological Associates of Lancaster

Q: What is the NPI number for Ophthalmological Associates of Lancaster?

The NPI for Ophthalmological Associates of Lancaster is 1609951078, a Type 2 (organization) record in the CMS NPPES registry.

Ophthalmology Physician in Lancaster, PA · enumerated 2006 · authorized official Diane Corallo, Owner Physician.

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

National Provider Identifier

1609951078

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Registry record

Entity type Organization (Type 2)

Legal business name Ophthalmological Associates of Lancaster

Practice address 558 N Duke St, Lancaster, PA, 17602

Phone (717) 397-8259

Fax (717) 397-1786

Enumeration date Oct 26, 2006

Last updated in NPPES Mar 5, 2008

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 042035E (PA) Primary

Authorized official

Name Diane Corallo

Title Owner Physician

Phone (717) 397-8259

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

What is the NPI number for Ophthalmological Associates of Lancaster?

The NPI for Ophthalmological Associates of Lancaster is 1609951078, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Ophthalmological Associates of Lancaster?

NPPES lists Diane Corallo (Owner Physician) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-05.