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Allergists (Internal Medicine) in Colorado

Data updated monthly · Last refresh October 2026

12 Allergy & Immunology (Internal Medicine) providers practice in Colorado, including 2 (17%) offering telehealth. The largest concentration is in Aurora. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

12providers
2telehealth
Auroratop city

Allergy & Immunology (Internal Medicine) by city in Colorado

Choose a city to see providers there.

Allergy & Immunology (Internal Medicine) in Aurora5 providers
Allergy & Immunology (Internal Medicine) in Lakewood2 providers
Allergy & Immunology (Internal Medicine) in Durango1 providers
Allergy & Immunology (Internal Medicine) in Thornton1 providers
Allergy & Immunology (Internal Medicine) in Colorado Springs1 providers
Allergy & Immunology (Internal Medicine) in Longmont1 providers
Allergy & Immunology (Internal Medicine) in Lone Tree1 providers

Allergy & Immunology (Internal Medicine) providers in Colorado

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Allen Adinoff, MD
Aurora, CO · No drug or device payments recorded (2025) · (720) 848-0000
Dr. Andrew Fontenot, MD
Aurora, CO · No drug or device payments recorded (2025) · (720) 848-0000
Dr. Jenny Stitt
Aurora, CO · $5,275 in drug and device payments (2025) · Telehealth · (720) 848-0000
Dr. Richard Luzietti, M.D.
Aurora, CO · No drug or device payments recorded (2025) · (720) 748-2900
Dr. Stephen Dreskin, MD
Aurora, CO · $108 in drug and device payments (2025) · (720) 848-0000
Dr. Robert Nathan, MD
Colorado Springs, CO · No drug or device payments recorded (2025) · (719) 473-0872
Dr. W Donald Cooke, MD
Durango, CO · $437 in drug and device payments (2025) · Telehealth · (970) 259-0780
Dr. Paul Schkade, MD
Lakewood, CO · No drug or device payments recorded (2025) · (303) 234-1067
Dr. Snehal Patel, D.O
Lakewood, CO · No drug or device payments recorded (2025) · (303) 234-1067
Dr. Jason Catanzaro, M.D.
Lone Tree, CO · No drug or device payments recorded (2025) · (303) 338-4545
Dr. Robert Pace, MD
Longmont, CO · $19 in drug and device payments (2025) · (303) 776-0868
Dr. Kevin O'brien, M.D.
Thornton, CO · No drug or device payments recorded (2025) · (720) 929-8300

Common questions

How many Allergy & Immunology (Internal Medicine) providers are in Colorado?

There are 12 Allergy & Immunology (Internal Medicine) providers with active NPI records practicing in Colorado, according to federal NPPES data refreshed monthly.

Do Allergy & Immunology (Internal Medicine) providers in Colorado offer telehealth?

Yes. 2 of the 12 Allergy & Immunology (Internal Medicine) providers in Colorado (about 17%) report offering telehealth services in CMS data.

Which cities in Colorado have the most Allergy & Immunology (Internal Medicine) providers?

Aurora (5), Lakewood (2), Durango (1) have the highest concentration of Allergy & Immunology (Internal Medicine) providers in Colorado.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

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Related

Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Allergy & Immunology (Internal Medicine) in Colorado? Get featured.