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

Dr. Mark Dwayne Christensen Sr., DDS

General Practice Dentistry in North Richland Hills, TX · enumerated 2006.

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

National Provider Identifier

1548340433

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Dwayne Christensen Sr.

Credential DDS

Sex Male

Practice address North Richland Hills, TX, 76182

Phone (817) 595-2458

Fax (817) 590-2468

Enumeration date Oct 16, 2006

Last updated in NPPES Nov 20, 2013

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 15137 (TX) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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 1548340433 active?

Yes, as of the latest NPPES snapshot, NPI 1548340433 is active (record last updated 2013-11-20).

How do I verify Mark Christensen's NPI record?

Cross-check NPI 1548340433 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-20.