Dr. William Paul Schalk, DDS

Dr. William Paul Schalk is a General Practice Dentistry provider (Dentist) practicing in Polson, MT, registered in the NPPES registry with NPI 1669571618 since 2006. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum

NPI	1669571618
Entity type	Individual (Type 1)
Name	Dr. William Paul Schalk
Credential	DDS
Sex	Male
Practice address	14TH AND MAIN ST, GRANDVIEW CLINIC, Polson, MT, 59860
Phone	4068834303
Enumeration date	2006-09-22
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	1309MT	MT

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Copy-ready billing details

Provider: William Schalk, DDS
NPI: 1669571618
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: 14TH AND MAIN ST, GRANDVIEW CLINIC, Polson, MT, 59860

Verify this record

Cross-check NPI 1669571618 against the authoritative CMS record: view Dr. William Paul Schalk 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

What is the NPI number for William Schalk?

The National Provider Identifier (NPI) for William Schalk is 1669571618, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Schalk practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.