Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr Stephen P Tonner Ltd

Q: What type of organization is Dr Stephen P Tonner Ltd?

Dr Stephen P Tonner Ltd is registered in NPPES as a Optometrist (its primary provider taxonomy).

Optometrist in Henning, MN · enumerated 2013 · authorized official Stephen Tonner, Owner/Optometrist.

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

National Provider Identifier

1760829568

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Registry record

Entity type Organization (Type 2)

Legal business name Dr Stephen P Tonner Ltd

Other name <Unavail>

Practice address 603 Douglas Ave, Henning, MN, 56551

Phone (218) 583-4673

Fax (218) 548-5671

Enumeration date Jun 3, 2013

Last updated in NPPES Jun 3, 2013

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers · License 2336 (MN) Primary

Authorized official

Name Stephen Tonner

Title Owner/Optometrist

Phone (218) 583-4673

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 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.

What type of organization is Dr Stephen P Tonner Ltd?

Dr Stephen P Tonner Ltd is registered in NPPES as a Optometrist (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-06-03.