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Mills Eye Institute, Inc

Ophthalmologic Surgery Clinic/Center in Susanville, CA · enumerated 2015 · authorized official Matthew Mills, Owner.

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

National Provider Identifier

1376927301

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Registry record

Entity type Organization (Type 2)
Legal business name Mills Eye Institute, Inc
Practice address 600 Ash St, Susanville, CA, 96130
Phone (775) 322-1000
Fax (775) 322-1050
Enumeration date Jul 20, 2015
Last updated in NPPES Oct 15, 2015

Taxonomy & classification

261QS0132X Ophthalmologic Surgery Clinic/Center Ambulatory Health Care Facilities · License AO699360 (CA) Primary

Authorized official

Name Matthew Mills
Title Owner
Phone (775) 322-1000

Other identifiers

Identifier Type State Issuer
00A699360 Medicaid CA -
CA165174 Other CA PTAN

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

What type of organization is Mills Eye Institute, Inc?
Mills Eye Institute, Inc is registered in NPPES as a Ophthalmologic Surgery Clinic/Center (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-15.