NPI Portal NPI Lookup & Verification

Dr. Mark Harrison Gander, DC

Dr. Mark Harrison Gander is a Chiropractor provider (Chiropractor) practicing in Aurora, CO, registered in the NPPES registry with NPI 1720140056 since 2006. The credential DC stands for Doctor of Chiropractic. Practices at Gander Chiropractic Clinic (listed at the same practice address in NPPES).

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NPI 1720140056
Entity type Individual (Type 1)
Name Dr. Mark Harrison Gander
Credential DC
Sex Male
Practice address 15270 E 6TH AVE, #10, Aurora, CO, 80011
Phone 3033609160
Fax 3033605803
Enumeration date 2006-12-14
Last updated in NPPES 2013-04-05

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111N00000X Chiropractor Primary 1486 CO

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Copy-ready billing details
Provider: Mark Gander, DC
NPI: 1720140056
Taxonomy: 111N00000X (Chiropractor)
Address: 15270 E 6TH AVE, #10, Aurora, CO, 80011

Other providers at this practice address

NPI Name Type Specialty Location
1689731259 Gander Chiropractic Clinic Organization Chiropractor Aurora, CO

Verify this record

Cross-check NPI 1720140056 against the authoritative CMS record: view Dr. Mark Harrison Gander 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 specialty is Mark Gander?
Mark Gander is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2013-04-05.