Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Howard Overton, M.D.

Geriatric Medicine (Internal Medicine) Physician in Little River, SC · enumerated 2006.

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

National Provider Identifier

1568437184

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Howard Overton

Credential M.D.

Sex Male

Practice address 4237 River Hills Drive, Suite 150, River Hills Medical Plaza, Little River, SC, 29566

Phone (843) 281-2778

Fax (843) 281-2785

Enumeration date Feb 17, 2006

Last updated in NPPES May 18, 2012

Taxonomy & licenses

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 32215 (SC) 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

How do I verify Mark Overton's NPI record?

Cross-check NPI 1568437184 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1568437184 active?

Yes, as of the latest NPPES snapshot, NPI 1568437184 is active (record last updated 2012-05-18).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-05-18.