NPI Portal NPI Lookup & Verification

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

Clifford A Onthank, D.C.

Chiropractor in Traverse City, MI · enumerated 2007.

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

National Provider Identifier

1386781946

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Clifford A Onthank
Credential D.C.
Sex Male
Practice address Traverse City, MI, 49684
Phone (231) 946-9246
Fax (213) 946-0750
Enumeration date Jan 31, 2007
Last updated in NPPES May 2, 2008

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

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 382419505 (MI) 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
2301004592 Other - BLUE CARE NETWORK
950B85023 Other - BCBS

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

How do I verify Clifford Onthank's NPI record?
Cross-check NPI 1386781946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1386781946 active?
Yes, as of the latest NPPES snapshot, NPI 1386781946 is active (record last updated 2008-05-02).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-02.