Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Stephen Wagner, MD

Hospitalist Physician in Seneca, SC · enumerated 2006.

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

National Provider Identifier

1336112614

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Registry record

Entity type Individual (Type 1)

Name Mark Stephen Wagner

Credential MD

Sex Male

Practice address 298 Memorial Dr, Seneca, SC, 29672

Phone (864) 885-7758

Fax (864) 885-7749

Enumeration date Feb 8, 2006

Last updated in NPPES May 20, 2019

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 31391 (SC) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 31391 (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

What specialty is Mark Wagner?

Mark Wagner is registered in NPPES with the primary taxonomy of Hospitalist Physician. 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-20.