Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A. Radlauer

Emergency Medicine Physician in Denver, CO · enumerated 2005 · practices at Questcare Obstetrics Colorado LLC.

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

National Provider Identifier

1821075342

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Registry record

Entity type Individual (Type 1)

Name Mark A. Radlauer

Sex Male

Practice address 4567 E. 9th Avenue, Denver, CO, 80220

Phone (303) 320-2455

Fax (303) 306-7753

Enumeration date Dec 27, 2005

Last updated in NPPES Jun 29, 2026

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License KS-0440272 (KS) Primary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License DR.0030468 (CO) Secondary

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 30468 (CO) Secondary

Other identifiers

Identifier	Type	State	Issuer
930052350	Other	CO	RAILROAD MEDICARE
01304682	Medicaid	CO	-

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 is the NPI number for Mark Radlauer?

The National Provider Identifier (NPI) for Mark Radlauer is 1821075342, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Radlauer practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-29.