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John Winslow Carlton, M.D.

Specialist in Loveland, CO · enumerated 2006 · practices at Poudre Valley Medical Group, LLC.

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

National Provider Identifier

1659445633

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Registry record

Entity type Individual (Type 1)
Name John Winslow Carlton
Credential M.D.
Sex Male
Practice address 2695 Rocky Mountain Ave., Suite 200, Loveland, CO, 80538
Phone (970) 493-7442
Fax (970) 493-2990
Enumeration date Nov 20, 2006
Last updated in NPPES Aug 3, 2010

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 19957 (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
01199579 Medicaid CO -
1659445633 Other CO NPI JOHN W CARLTON

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

Where does John Carlton practice?
The practice location on file with NPPES is in Loveland, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Carlton?
The National Provider Identifier (NPI) for John Carlton is 1659445633, 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 2010-08-03.