Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Gary Allen Dennis, D.C.
Chiropractor in Fairfax, VA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952301558
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Registry record
Entity type Individual (Type 1)
Name Dr. Gary Allen Dennis
Credential D.C.
Sex Male
Practice address 10831 Main St, Fairfax, VA, 22030
Phone (703) 273-7733
Fax (703) 385-9693
Enumeration date Jul 26, 2005
Last updated in NPPES Aug 12, 2014
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC 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.
Frequently asked questions
What is the NPI number for Gary Dennis?
The National Provider Identifier (NPI) for Gary Dennis is 1952301558, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gary Dennis practice?
The practice location on file with NPPES is in Fairfax, VA. 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 2014-08-12.