NPI Portal NPI Lookup & Verification

Dr. Gary Otto, DC

Dr. Gary Otto is a Chiropractor provider (Chiropractor) practicing in Aurora, CO, registered in the NPPES registry with NPI 1477637866 since 2006. The credential DC stands for Doctor of Chiropractic. Practices at Otto Chiropractic (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1477637866
Entity type Individual (Type 1)
Name Dr. Gary Otto
Credential DC
Sex Male
Practice address Aurora, CO, 80015
Phone 3037667073
Enumeration date 2006-10-24
Last updated in NPPES 2008-04-17

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111N00000X Chiropractor Primary 3665 CO

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

Other identifiers

Identifier Type State Issuer
3665 Other CO STATE LICENSE
Copy-ready billing details
Provider: Gary Otto, DC
NPI: 1477637866
Taxonomy: 111N00000X (Chiropractor)
Address: Aurora, CO, 80015

Other providers at this practice address

NPI Name Type Specialty Location
1790959039 Otto Chiropractic Organization Chiropractor Aurora, CO

Verify this record

Cross-check NPI 1477637866 against the authoritative CMS record: view Dr. Gary Otto 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 Gary Otto?
Gary Otto 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 2026-07-11. Provider record last updated 2008-04-17.