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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John A Dennehy Jr., DC PC

Chiropractor in Hannibal, MO · enumerated 2006 · practices at John A Dennehy Jr Dc PC.

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

National Provider Identifier

1740390871

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Registry record

Entity type Individual (Type 1)
Name John A Dennehy Jr.
Credential DC PC
Sex Male
Practice address Hannibal, MO, 63401
Phone (573) 221-2001
Fax (573) 221-3316
Enumeration date Aug 30, 2006
Last updated in NPPES Oct 19, 2010

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 005141 (MO) Primary

Other identifiers

Identifier Type State Issuer
1356658553 Other MO NPI
5580 Other MO BLUE CROSS BLUE SHIELD

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.

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Frequently asked questions

Is NPI 1740390871 active?
Yes, as of the latest NPPES snapshot, NPI 1740390871 is active (record last updated 2010-10-19).
How do I verify John Dennehy's NPI record?
Cross-check NPI 1740390871 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-10-19.