COLORADO ALLERGY AND ASTHMA CENTERS, PC
NPI 1689246274
Specialist in Littleton, CO

Q: What is Colorado Allergy And Asthma Centers, PC's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Active since July 13, 2021CLIA 06D1060057 · Waiver

5920 S ESTES ST STE 120, LITTLETON, CO 80123(303) 971-0311(303) 948-0339 Get Directions Write a Review

NPPES record last updated: July 13, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Colorado Allergy And Asthma Centers, Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

COLORADO ALLERGY AND ASTHMA CENTERS, PC (NPI 1689246274) is a healthcare organization registered as a specialist in Littleton, Colorado and active in the NPI registry since July 2021. The organization holds a CLIA Waiver certificate valid through October 12, 2026 and lists John Milewski, Coo/chief Operating Officer, as its authorized official.

NPPES Registry Identity

NPI1689246274

Entity TypeOrganization

Primary Taxonomy174400000X

Legal Business NameCOLORADO ALLERGY AND ASTHMA CENTERS, PC

Location Address5920 S ESTES ST STE 120Littleton, CO 80123-8618

Mailing Address125 Rampart Way Ste 200Denver, CO 80230-6429 · (720) 858-7550 · Fax (720) 858-7615

Phone(303) 971-0311

Fax(303) 948-0339

Organization SubpartNo

Authorized OfficialJohn MilewskiCoo/chief Operating Officer · (720) 858-7431

Enumeration DateJuly 13, 2021

NPPES CertifiedJuly 13, 2021

✔ NPI 1689246274 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

5920 S ESTES ST STE 120, Littleton, CO 80123

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 06D1060057

Colorado Allergy And Asthma Centers, PC · Littleton, CO

Active · expires Oct 12, 2026

CLIA Number06D1060057

Laboratory TypePhysician Office

Certificate Effective DateOctober 13, 2024

Certificate Expiration DateOctober 12, 2026

Laboratory DirectorDr. Ryan Buckley

Laboratory Phone(720) 858-8500

Laboratory LocationColorado Allergy And Asthma Centers, PC5920 S Estes St, Suite 120, Littleton, CO 80123

CLIA data matches this NPI record on: Address Name

This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RYAN BUCKLEY MD

Allergy & Immunology

5920 S ESTES ST STE 120
LITTLETON, CO 80123

Jefferson County (303) 971-0311

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Colorado Allergy And Asthma Centers, PC's NPI number?

The NPI number for Colorado Allergy And Asthma Centers, PC is 1689246274. It was assigned to this organization in the NPPES registry on July 13, 2021.

Where is Colorado Allergy And Asthma Centers, PC located?

Colorado Allergy And Asthma Centers, PC is located at 5920 S Estes St Ste 120, Littleton, CO 80123. The listed phone number is (303) 971-0311.

What is Colorado Allergy And Asthma Centers, PC's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Does Colorado Allergy And Asthma Centers, PC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 06D1060057) is associated with this NPI, valid through October 12, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Colorado Allergy And Asthma Centers, PC was last updated on July 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.