Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Mark Lawson, MD

Gastroenterology Physician in Christiansburg, VA · enumerated 2005.

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

National Provider Identifier

1164406716

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Registry record

Entity type Individual (Type 1)

Name Dr. John Mark Lawson

Credential MD

Sex Male

Practice address 110 Akers Farm Rd, Christiansburg, VA, 24073

Phone (540) 382-9405

Enumeration date Dec 6, 2005

Last updated in NPPES Mar 25, 2024

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 010146550 (VA) 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
314223	Other	-	MAMSI
005818290	Medicaid	VA	-
314223	Other	-	OPT CHOICE
541870984	Other	-	VA HEALTH NETWORK
C13214	Other	-	MEDICARE RR GROUP
100000219	Other	-	TRAILBLAZERS
541870984006	Other	-	CHAMPUS
541870984028	Other	-	CIGNA
005818290	Other	-	FIRST HEALTH
110175154	Other	-	TRAVELERS
110175154	Other	-	RR MEDICARE
25106	Other	-	OPTIMA
394397	Other	-	ANTHEM HBV
209382	Other	-	ANTHEM OBIOI
25106	Other	-	SENTARA
790527U	Medicaid	NC	-

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.

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Frequently asked questions

What specialty is John Lawson?

John Lawson is registered in NPPES with the primary taxonomy of Gastroenterology 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 2024-03-25.