Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William B. Witte, Ltd

Optometrist in Bloomington, IL · enumerated 2007 · authorized official Mary Rieger, Optometrist.

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

National Provider Identifier

1548458623

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Registry record

Entity type Organization (Type 2)

Legal business name William B. Witte, Ltd

Practice address 2409 E Washington St, Bloomington, IL, 61704

Phone (309) 663-8581

Fax (309) 663-0232

Enumeration date Oct 14, 2007

Last updated in NPPES Oct 19, 2007

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name Mary Rieger

Title Optometrist

Phone (309) 663-8581

Other identifiers

Identifier	Type	State	Issuer
5784001	Other	IL	BLUE CROSS BLUE SHIELD
0282420001	Other	IL	DMERC SUPPLIER

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.

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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 2007-10-19. Verify at npiregistry.cms.hhs.gov.

Where is William B. Witte, Ltd located?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-19.