Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Alan Fox, MD

Surgery Physician in Crossville, TN · enumerated 2006.

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

National Provider Identifier

1073526596

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Alan Fox

Credential MD

Sex Male

Practice address 100 Lantana Rd, Suite 202, Crossville, TN, 38555

Phone (931) 484-5141

Fax (931) 484-5620

Enumeration date Aug 14, 2006

Last updated in NPPES Jun 7, 2021

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD18036 (TN) 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
123414	Other	TN	BLUE CROSS
020015278	Other	-	RAILROAD MEDICARE
3058927	Medicaid	TN	-

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 Fox?

Mark Fox is registered in NPPES with the primary taxonomy of Surgery 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 2021-06-07.