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

Dr. Mark Douglas Oliver, D.D.S.

Q: What is the NPI number for Mark Oliver?

The National Provider Identifier (NPI) for Mark Oliver is 1629140207, a Type 1 (individual) record in the CMS NPPES registry.

Dentist in Lagrange, GA · enumerated 2006.

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

National Provider Identifier

1629140207

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Douglas Oliver

Credential D.D.S.

Sex Male

Practice address Lagrange, GA, 30240

Phone (706) 884-8523

Fax (706) 884-4679

Enumeration date Nov 15, 2006

Last updated in NPPES Jul 16, 2009

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License DN010969 (GA) 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

Where does Mark Oliver practice?

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

What is the NPI number for Mark Oliver?

The National Provider Identifier (NPI) for Mark Oliver is 1629140207, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-16.