Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William D Plummer, MD

Internal Medicine Physician in Seneca, SC · enumerated 2006 · practices at Laurel Medical Group.

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

National Provider Identifier

1376516799

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Registry record

Entity type Individual (Type 1)

Name William D Plummer

Credential MD

Sex Male

Practice address 501 Rochester Hwy, Suite D, Seneca, SC, 29672

Phone (864) 886-0080

Enumeration date Feb 8, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20860 (SC) Primary

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
208607	Medicaid	SC	—

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

Is NPI 1376516799 active?

Yes — as of the latest NPPES snapshot, NPI 1376516799 is active (record last updated 2007-07-08).

How do I verify William Plummer's NPI record?

Cross-check NPI 1376516799 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Irene Parker Gastroenterology Physician · Seneca, SC NPI 1366414997 Laurel Medical Group Gastroenterology Physician · Seneca, SC NPI 1952373599

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