NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel Joseph Cassis, D.D.S.

General Practice Dentistry in Fayetteville, WV · enumerated 2010.

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

National Provider Identifier

1386964948

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Daniel Joseph Cassis
Credential D.D.S.
Sex Male
Practice address 138 Lively St, Fayetteville, WV, 25840
Phone (304) 574-0424
Fax (304) 574-2102
Enumeration date Jun 7, 2010
Last updated in NPPES Jun 7, 2010

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 3912 (WV) 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 Daniel Cassis?
The National Provider Identifier (NPI) for Daniel Cassis is 1386964948, a Type 1 (individual) record in the CMS NPPES registry.
Where does Daniel Cassis practice?
The practice location on file with NPPES is in Fayetteville, WV. 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 2010-06-07.