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Dr. Mark Landers Riddle, DO

Emergency Medicine Physician in Fort Hood, TX · enumerated 2008.

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

National Provider Identifier

1770748972

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark Landers Riddle
Credential DO
Sex Male
Practice address 590 Medical Center Road, Building 36065, Fort Hood, TX, 76544
Phone (254) 288-8000
Enumeration date Jul 28, 2008
Last updated in NPPES Jan 31, 2025

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License N9944 (TX) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

What is the NPI number for Mark Riddle?
The National Provider Identifier (NPI) for Mark Riddle is 1770748972, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Riddle practice?
The practice location on file with NPPES is in Fort Hood, TX. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-31.