NPI Portal NPI Lookup & Verification

David Thelen

David Thelen is a healthcare organization registered as Optician in Watertown, MN, holding Type 2 (organization) NPI 1407927734 since 2006. The authorized official on file is Jane Thelen, Owner.

✓ Active NPI ✓ Valid NPI checksum

NPI 1407927734
Entity type Organization (Type 2)
Legal business name David Thelen
Other name <Unavail>
Practice address 204 LEWIS AVE S, SUITE 102, Watertown, MN, 55388
Phone 9529553553
Fax 9529551900
Enumeration date 2006-11-10
Last updated in NPPES 2020-08-22

Authorized official

Name Jane Thelen
Title Owner
Phone 7632954044

Taxonomy & classification

Taxonomy code Specialty Primary License State
156FX1800X Optician Primary
Copy-ready billing details
Provider: David Thelen
NPI: 1407927734
Taxonomy: 156FX1800X (Optician)
Address: 204 LEWIS AVE S, SUITE 102, Watertown, MN, 55388

Providers at this address

NPI Name Type Specialty Location
1790768364 William Whisler Individual Family Medicine Physician Watertown, MN
1124002548 Kristin Olson Individual Nurse Practitioner Watertown, MN
1720013279 Watertown Pharmacy LLC Organization Community/Retail Pharmacy Watertown, MN
1396770830 Rosemary Rosdahl Individual Pharmacist Watertown, MN
1811091176 Tonya Schrader Individual Speech-Language Pathologist Watertown, MN
1962588525 Melinda Ament Individual Nurse Practitioner Watertown, MN
1720139579 Dj-Mn Inc Organization Optician Watertown, MN
1386862449 Jeffrey Dagen Individual Physical Therapist Watertown, MN

Verify this record

Cross-check NPI 1407927734 against the authoritative CMS record: view David Thelen on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where is David Thelen located?
The practice location on file with NPPES is in Watertown, MN.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-22.