Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Andrew Dillon, DMD

General Practice Dentistry in Tylertown, MS · enumerated 2006 · practices at Mark Andrew Dillon, Dmd, PA.

Data current as of Jul 11, 2026 · sourced from CMS NPPES

National Provider Identifier

1366547986

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Andrew Dillon

Credential DMD

Sex Male

Practice address 75 Old Highway 98 E, Tylertown, MS, 39667

Phone (601) 876-2176

Fax (601) 876-4513

Enumeration date Sep 14, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 2717-93 (MS) Primary

DMD — Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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

What specialty is Mark Dillon?

Mark Dillon is registered in NPPES with the primary taxonomy of General Practice Dentistry. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Mark Andrew Dillon, Dmd, PA General Practice Dentistry · Tylertown, MS NPI 1235276312

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.