Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Carlson Tillisch Eye Clinic, Ltd

Optometrist in Mankato, MN · enumerated 2006 · authorized official George Lach, Owner.

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

National Provider Identifier

1225116932

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Registry record

Entity type Organization (Type 2)

Legal business name Carlson Tillisch Eye Clinic, Ltd

Practice address 120 N Broad St, Mankato, MN, 56001

Phone (507) 345-5087

Fax (507) 345-1151

Enumeration date Nov 1, 2006

Last updated in NPPES Sep 1, 2022

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name George Lach

Title Owner

Phone (507) 345-5087

Other identifiers

Identifier	Type	State	Issuer
960103100	Other	MN	MEDICAL ASSISTANCE
41663TI	Other	MN	BLUE CROSS & BLUE SHIELD

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 Carlson Tillisch Eye Clinic, Ltd located?

The practice location on file with NPPES is in Mankato, MN.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2022-09-01. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Matthew Downs Optometrist · Mankato, MN NPI 1205857042

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-01.