NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Sarah Jean Karls, D.D.S.

General Practice Dentistry in Madison, WI · enumerated 2011 · practices at Dentistry for Madison, LLC.

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

National Provider Identifier

1841581915

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Sarah Jean Karls
Credential D.D.S.
Sex Female
Practice address 413 W Washington Ave, Madison, WI, 53703
Enumeration date Apr 25, 2011
Last updated in NPPES Oct 18, 2012

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 6589-015 (WI) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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 does Sarah Karls practice?
The practice location on file with NPPES is in Madison, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sarah Karls?
The National Provider Identifier (NPI) for Sarah Karls is 1841581915, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-18.