Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Clayton Scott Harper, DDS, MD

Oral and Maxillofacial Surgery (Dentist) in Boulder, CO · enumerated 2006.

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

National Provider Identifier

1851371025

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Registry record

Entity type Individual (Type 1)

Name Dr. Clayton Scott Harper

Credential DDS, MD

Sex Male

Practice address Boulder, CO, 80301

Phone (303) 938-0130

Fax (303) 245-0405

Enumeration date Jan 22, 2006

Last updated in NPPES Aug 12, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122300000X Dentist Dental Providers · License P44870 (NY) Secondary

122300000X Dentist Dental Providers · License 20788 (TX) Secondary

1223G0001X General Practice Dentistry Dental Providers · License P44870 (NY) Secondary

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 9735 (CO) Primary

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License 20788 (TX) Secondary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier	Type	State	Issuer
1223S0112X	Medicaid	TX	-

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 NPI 1851371025 active?

Yes, as of the latest NPPES snapshot, NPI 1851371025 is active (record last updated 2011-08-12).

How do I verify Clayton Harper's NPI record?

Cross-check NPI 1851371025 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Craig Pearson Chiropractor · Boulder, CO NPI 1326076936

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-12.