Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Clayton Koontz Massey, M.D.

Emergency Medicine Physician in Temple, TX · enumerated 2010.

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

National Provider Identifier

1811216542

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Clayton Koontz Massey

Credential M.D.

Sex Male

Practice address Scott & White, 2401 S. 31st St., Temple, TX, 76508

Phone (254) 724-2111

Enumeration date May 20, 2010

Last updated in NPPES Aug 17, 2017

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License BP10037110 (TX) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License P8275 (TX) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Clayton Massey?

Clayton Massey is registered in NPPES with the primary taxonomy of Emergency Medicine 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-08-17.