Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David John Landwehr, DDS MS

Endodontics in Madison, WI · enumerated 2006 · practices at Capital Endodontics.

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

National Provider Identifier

1447333414

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Registry record

Entity type Individual (Type 1)

Name Dr. David John Landwehr

Credential DDS MS

Sex Male

Practice address 2418 Crossroads Dr Ste 2900, Madison, WI, 53718

Phone (608) 442-3300

Enumeration date Oct 23, 2006

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

1223P0106X Oral and Maxillofacial Pathology Dentistry Dental Providers · License 5120015 (WI) Secondary

1223E0200X Endodontics Dental Providers · License 5120015 (WI) Primary

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 the NPI number for David Landwehr?

The National Provider Identifier (NPI) for David Landwehr is 1447333414, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Landwehr practice?

The practice location on file with NPPES is in Madison, WI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Capital Endodontics Endodontics · Madison, WI NPI 1154435246 Brittany Kawas Endodontics · Madison, WI NPI 1336689769

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.