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

Houston Landis Orr, MD

Student in an Organized Health Care Education/Training Program in Tupelo, MS · enumerated 2023.

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

National Provider Identifier

1366138331

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Registry record

Entity type Individual (Type 1)
Name Houston Landis Orr
Credential MD
Sex Male
Practice address Tupelo, MS, 38801
Phone (662) 377-3000
Enumeration date Apr 13, 2023
Last updated in NPPES Apr 13, 2023

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

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Is NPI 1366138331 active?
Yes, as of the latest NPPES snapshot, NPI 1366138331 is active (record last updated 2023-04-13).
How do I verify Houston Orr's NPI record?
Cross-check NPI 1366138331 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 2023-04-13.