Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Ennis Eye Clinic

Q: What is the NPI number for Ennis Eye Clinic?

The NPI for Ennis Eye Clinic is 1639431588, a Type 2 (organization) record in the CMS NPPES registry.

Optometrist in Ennis, MT · enumerated 2012 · authorized official Sarah Kirkpatrick, Owner/Optometrist.

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

National Provider Identifier

1639431588

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Registry record

Entity type Organization (Type 2)

Legal business name Ennis Eye Clinic

Practice address 219 E. Main St., Ennis, MT, 59792

Phone (406) 682-4208

Enumeration date Jun 15, 2012

Last updated in NPPES Jun 15, 2012

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 811 (MT) Primary

Authorized official

Name Sarah Kirkpatrick

Title Owner/Optometrist

Phone (406) 682-4208

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 Ennis Eye Clinic?

The NPI for Ennis Eye Clinic is 1639431588, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Ennis Eye Clinic?

NPPES lists Sarah Kirkpatrick (Owner/Optometrist) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-15.