Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

James J. Demarco M.D.

Nephrology Physician in Clarksburg, WV · enumerated 2007 · authorized official James Demarco, Owner.

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

National Provider Identifier

1386769206

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Registry record

Entity type Organization (Type 2)

Legal business name James J. Demarco M.D.

Other name <Unavail>

Practice address 4 Hospital Plz, Suite 205, Clarksburg, WV, 26301

Phone (304) 622-5196

Fax (304) 622-2810

Enumeration date Mar 20, 2007

Last updated in NPPES Jun 17, 2008

Taxonomy & classification

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 17202 (WV) Primary

Authorized official

Name James Demarco

Title Owner

Phone (304) 622-5196

Other identifiers

Identifier	Type	State	Issuer
F48491	Other	WV	UPIN
0075650000	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

Where is James J. Demarco M.D. located?

The practice location on file with NPPES is in Clarksburg, WV.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-06-17. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Dana Bragg Family Medicine Physician · Clarksburg, WV NPI 1598746562 Antoinette Marascio Nurse Practitioner · Clarksburg, WV NPI 1093791840 Janet Childers Medical Physician Assistant · Clarksburg, WV NPI 1013017011

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-17.