Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

F. Herbert Wiswall, D.D.S., P.C.

General Practice Dentistry in Watertown, SD · enumerated 2007 · authorized official F. Herbert Wiswall, Owner.

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

National Provider Identifier

1205959665

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name F. Herbert Wiswall, D.D.S., P.C.

Practice address 600 4th St Ne Ste 201, Watertown, SD, 57201

Phone (605) 886-8096

Fax (605) 886-1979

Enumeration date Apr 9, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

1223G0001X General Practice Dentistry Dental Providers · License M368 (SD) Primary

Authorized official

Name F. Herbert Wiswall

Title Owner

Phone (605) 886-8096

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

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.

Where is F. Herbert Wiswall, D.D.S., P.C. located?

The practice location on file with NPPES is in Watertown, SD.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.