NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Dennis Ralph Graber, DDS

General Practice Dentistry in Sioux Falls, SD · enumerated 2006 · practices at Dennis Graber DDS Family Dentistry Inc..

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

National Provider Identifier

1326117912

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Dennis Ralph Graber
Credential DDS
Sex Male
Practice address 1729 S Cliff Ave, Sioux Falls, SD, 57105
Phone (605) 339-1369
Fax (605) 334-5590
Enumeration date Nov 7, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License M496 (SD) 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

What is the NPI number for Dennis Graber?
The National Provider Identifier (NPI) for Dennis Graber is 1326117912, a Type 1 (individual) record in the CMS NPPES registry.
Where does Dennis Graber practice?
The practice location on file with NPPES is in Sioux Falls, SD. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.