Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Allen Landis, MD

Q: What is the NPI number for Mark Landis?

The National Provider Identifier (NPI) for Mark Landis is 1225236771, a Type 1 (individual) record in the CMS NPPES registry.

Family Medicine Physician in Centerville, TN · enumerated 2007.

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

National Provider Identifier

1225236771

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Allen Landis

Credential MD

Sex Male

Practice address 150 E Swan St, Centerville, TN, 37033

Phone (931) 729-3091

Fax (931) 729-0809

Enumeration date Jul 6, 2007

Last updated in NPPES May 8, 2026

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD0000029891 (TN) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 29891 (TN) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Mark Landis practice?

The practice location on file with NPPES is in Centerville, TN. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mark Landis?

The National Provider Identifier (NPI) for Mark Landis is 1225236771, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-08.