Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

David J Casper, O.D.

Optometrist in Dwight, IL · enumerated 2010 · authorized official David Casper, Optometrist.

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

National Provider Identifier

1235458761

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Registry record

Entity type Organization (Type 2)

Legal business name David J Casper, O.D.

Other name <Unavail>

Practice address 110 E Main St, Dwight, IL, 60420

Phone (815) 584-5148

Fax (815) 828-2020

Enumeration date May 24, 2010

Last updated in NPPES Feb 27, 2025

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 046007155 (IL) Primary

Authorized official

Name David Casper

Title Optometrist

Phone (815) 744-1400

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2025-02-27. Verify at npiregistry.cms.hhs.gov.

Where is David J Casper, O.D. located?

The practice location on file with NPPES is in Dwight, IL.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-27.