Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Charles Davies, OD

Optometrist in Texarkana, TX · enumerated 2007.

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

National Provider Identifier

1841342235

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Charles Davies

Credential OD

Sex Male

Practice address 4000 New Boston Rd, Texarkana, TX, 75501

Phone (903) 838-5666

Fax (903) 831-5320

Enumeration date Jan 17, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4185T (TX) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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

Is NPI 1841342235 active?

Yes, as of the latest NPPES snapshot, NPI 1841342235 is active (record last updated 2007-07-08).

How do I verify Mark Davies's NPI record?

Cross-check NPI 1841342235 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 2007-07-08.