NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Timothy J O'Connor, DC

Chiropractor in Appleton, WI · enumerated 2006 · practices at O'Connor Chiropractic, Sc.

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

National Provider Identifier

1548362072

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Timothy J O'Connor
Credential DC
Sex Male
Practice address 2021 S Oneida St, Appleton, WI, 54915
Phone (920) 735-2828
Fax (920) 735-2981
Enumeration date Sep 4, 2006
Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 2261 (WI) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
391936002008 Other - BLUE CROSS BLUE SHIELD
38841000 Medicaid WI -

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 Timothy O'Connor?
The National Provider Identifier (NPI) for Timothy O'Connor is 1548362072, a Type 1 (individual) record in the CMS NPPES registry.
Where does Timothy O'Connor practice?
The practice location on file with NPPES is in Appleton, WI. 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 2007-07-09.