Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Leo Johnson, M.D.

Q: What is the NPI number for Mark Johnson?

The National Provider Identifier (NPI) for Mark Johnson is 1649353855, a Type 1 (individual) record in the CMS NPPES registry.

Surgery Physician in Morgantown, WV · enumerated 2006 · practices at Monongalia County General Hospital Company.

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

National Provider Identifier

1649353855

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Registry record

Entity type Individual (Type 1)

Name Mark Leo Johnson

Credential M.D.

Sex Male

Practice address 3000 Mon Health Medical Park Dr Ste 3300, Morgantown, WV, 26505

Phone (304) 599-1448

Fax (304) 599-5335

Enumeration date Oct 23, 2006

Last updated in NPPES Apr 1, 2024

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 18363 (WV) 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
WV5186C185	Other	WV	MEDICARE
001719640	Other	-	BLUE CROSS BLUE SHIELD
0126399000	Medicaid	WV	-
PO1453582	Other	WV	RAILROAD MEDICARE

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 Johnson practice?

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

What is the NPI number for Mark Johnson?

The National Provider Identifier (NPI) for Mark Johnson is 1649353855, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

David Hofius Surgery Physician · Morgantown, WV NPI 1013903285 Monongalia County General Hospital Company Surgery Physician · Morgantown, WV NPI 1407668916

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-01.