Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Christopher Kefer, MD PHD

Q: What is the NPI number for John Kefer?

The National Provider Identifier (NPI) for John Kefer is 1174799837, a Type 1 (individual) record in the CMS NPPES registry.

Urology Physician in Boulder, CO · enumerated 2008.

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

National Provider Identifier

1174799837

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Registry record

Entity type Individual (Type 1)

Name John Christopher Kefer

Credential MD PHD

Sex Male

Practice address 4743 Arapahoe Ave, Suite 104, Boulder, CO, 80303

Phone (303) 444-9000

Fax (303) 444-9073

Enumeration date May 2, 2008

Last updated in NPPES Jun 24, 2014

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 49212 (CO) Primary

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 John Kefer practice?

The practice location on file with NPPES is in Boulder, CO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for John Kefer?

The National Provider Identifier (NPI) for John Kefer is 1174799837, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-24.