Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Duff, DO

Family Medicine Physician in Buckeye, WV · enumerated 2005.

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

National Provider Identifier

1992782031

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Duff

Credential DO

Sex Male

Practice address 150 Duncan Rd, Buckeye, WV, 24924

Phone (304) 799-7400

Enumeration date Dec 29, 2005

Last updated in NPPES Aug 6, 2018

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 03315 (KY) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 1446 (WV) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 1446 (WV) Primary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 1446 (WV) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
7100046790	Medicaid	KY	-
001714924	Other	WV	WV BCBS
1064385	Other	WV	WV DWC
2851838	Medicaid	OH	-
P00881466	Other	KY	RR MEDICARE
001722627	Other	WV	BLUE CROSS BLUE SHIELD
0045353000	Medicaid	WV	-

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 1992782031 active?

Yes, as of the latest NPPES snapshot, NPI 1992782031 is active (record last updated 2018-08-06).

How do I verify Mark Duff's NPI record?

Cross-check NPI 1992782031 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-06.