Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Lee Purnell, MD

Specialist in Basalt, CO · enumerated 2006.

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

National Provider Identifier

1457315566

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Lee Purnell

Credential MD

Sex Male

Practice address 1450 E Valley Rd, Basalt, CO, 81621

Phone (970) 927-8611

Fax (970) 927-8633

Enumeration date Apr 14, 2006

Last updated in NPPES Mar 6, 2012

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 26418 (CO) 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
1264183	Medicaid	CO	-

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 Purnell?

Mark Purnell is registered in NPPES with the primary taxonomy of Specialist. 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 2012-03-06.