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Colorado Allergy and Asthma Centers, PC

Specialist in Highlands Ranch, CO · enumerated 2021 · authorized official John Milewski, Coo/Chief Operating Officer.

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

National Provider Identifier

1174195846

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Registry record

Entity type Organization (Type 2)
Legal business name Colorado Allergy and Asthma Centers, PC
Practice address 9331 S Colorado Blvd Ste 100, Highlands Ranch, CO, 80126
Phone (303) 795-8177
Fax (303) 797-2166
Enumeration date Jul 13, 2021
Last updated in NPPES Jul 13, 2021

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name John Milewski
Title Coo/Chief Operating Officer
Phone (720) 858-7431

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

What is the NPI number for Colorado Allergy and Asthma Centers, PC?
The NPI for Colorado Allergy and Asthma Centers, PC is 1174195846, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Colorado Allergy and Asthma Centers, PC?
NPPES lists John Milewski (Coo/Chief Operating Officer) as the authorized official for this organization.

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