NPI Portal NPI Lookup & Verification

Dr. Mark W Terry, DC

Dr. Mark W Terry is a Neurology Chiropractor provider (Chiropractor) practicing in Centralia, IL, registered in the NPPES registry with NPI 1720174394 since 2006. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1720174394
Entity type Individual (Type 1)
Name Dr. Mark W Terry
Credential DC
Sex Male
Practice address Centralia, IL, 62801
Phone 6185325432
Fax 6185321103
Enumeration date 2006-10-04
Last updated in NPPES 2007-07-08

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

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111NN0400X Neurology Chiropractor Primary IL

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

Copy-ready billing details
Provider: Mark Terry, DC
NPI: 1720174394
Taxonomy: 111NN0400X (Neurology Chiropractor)
Address: Centralia, IL, 62801

Verify this record

Cross-check NPI 1720174394 against the authoritative CMS record: view Dr. Mark W Terry 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

How do I verify Mark Terry's NPI record?
Cross-check NPI 1720174394 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1720174394 active?
Yes — as of the latest NPPES snapshot, NPI 1720174394 is active (record last updated 2007-07-08).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.