Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Simpson & Bigham Od Partnership

Optometrist in Evansville, IN · enumerated 2009 · authorized official Amy Gorman-Miller, Office Manager.

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

National Provider Identifier

1114150968

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Registry record

Entity type Organization (Type 2)

Legal business name Simpson & Bigham Od Partnership

Practice address 2417 W Franklin St, Evansville, IN, 47712

Phone (812) 423-5000

Fax (812) 423-6838

Enumeration date Aug 27, 2009

Last updated in NPPES Nov 1, 2012

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 18002839 (IN) Primary

152W00000X Optometrist Eye and Vision Services Providers · License 18003226 (IN) Secondary

Authorized official

Name Amy Gorman-Miller

Title Office Manager

Phone (812) 423-5000

Other identifiers

Identifier	Type	State	Issuer
200118870	Medicaid	IN	-
200441230	Medicaid	IN	-

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

Where is Simpson & Bigham Od Partnership located?

The practice location on file with NPPES is in Evansville, IN.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-11-01. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Allyson Bigham Optometrist · Evansville, IN NPI 1356337661 Stephen Simpson Optometrist · Evansville, IN NPI 1619963733

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-01.