Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James Emit Clark, MD

Specialist in Boulder, CO · enumerated 2006.

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

National Provider Identifier

1902908593

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Registry record

Entity type Individual (Type 1)

Name Dr. James Emit Clark

Credential MD

Sex Male

Practice address 4743 Arapahoe Ave, Boulder, CO, 80303

Phone (303) 444-9000

Fax (303) 444-9073

Enumeration date Sep 2, 2006

Last updated in NPPES Jun 25, 2014

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 23894 (CO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

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.

What specialty is James Clark?

James Clark 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-25.