Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark John Baskerville, M.D.

Emergency Medicine Physician in Columbia, MD · enumerated 2006.

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

National Provider Identifier

1306801824

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Registry record

Entity type Individual (Type 1)

Name Mark John Baskerville

Credential M.D.

Sex Male

Practice address 5755 Cedar Ln, Columbia, MD, 21044

Phone (410) 884-8688

Enumeration date Apr 18, 2006

Last updated in NPPES Mar 9, 2026

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License D54897 (MD) Secondary

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License MD23614 (OR) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License D0054897 (MD) 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
50086273	Other	OR	RAILROAD MEDICARE
A048	Other	OR	TRICARE
286886	Medicaid	OR	-

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 Baskerville?

Mark Baskerville is registered in NPPES with the primary taxonomy of Emergency Medicine 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 2026-03-09.