NPI Portal NPI Lookup & Verification

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

Dr. Roy Howard Sexton III, M.D.

Internal Medicine Physician in Longmont, CO · enumerated 2006.

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

National Provider Identifier

1548368129

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Registry record

Entity type Individual (Type 1)
Name Dr. Roy Howard Sexton III
Credential M.D.
Sex Male
Practice address Longmont, CO, 80504
Phone (720) 718-7000
Fax (970) 237-7848
Enumeration date Sep 20, 2006
Last updated in NPPES Dec 2, 2021

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License C52418 (CA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ME87935 (FL) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 14938 (NV) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License DR.0066538 (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
269220101 Medicaid FL -
00C524180 Medicaid CA -

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

Where does Roy Sexton practice?
The practice location on file with NPPES is in Longmont, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Roy Sexton?
The National Provider Identifier (NPI) for Roy Sexton is 1548368129, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-02.