Allergists in Colorado
Data updated monthly · Last refresh October 2026
101 Allergy & Immunology providers practice in Colorado, including 20 (20%) offering telehealth. The largest concentration is in Denver. 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.
101providers
20telehealth
Denvertop city
Allergy & Immunology by city in Colorado
Choose a city to see providers there.
Where Allergists in Colorado practice
From CMS Medicare enrollment records covering 51 of the 101 providers listed here (50%). Providers who do not bill Medicare are not included in these figures.
37%solo or small practice (under 10 clinicians)
33%mid-size group (10 to 99)
29%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Allergists | All clinicians in group | Main city |
| National Jewish Health | 10 | 244 | Denver |
| Colorado Allergy and Asthma Centers PC | 8 | 25 | Denver |
| Boulder Valley Asthma and Allergy Clinics PC | 5 | 9 | Lakewood |
| Allergy Partners of Colorado, PC | 4 | 6 | Greeley |
| University Physicians Inc.orporated | 3 | 3,189 | Aurora |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Allergists affiliated |
| National Jewish Health | Denver | Nonprofit | Not rated | 8 |
| University of Colorado Hospital Authority | Aurora | Government | 5 of 5 | 5 |
| Poudre Valley Hospital | Fort Collins | Nonprofit | 5 of 5 | 5 |
| Uch-Memorial Health System | Colorado Springs | Government | 4 of 5 | 5 |
| Banner North Colorado Medical Center | Greeley | Nonprofit | 4 of 5 | 3 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Allergy & Immunology 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. Alan Schocket, MDAurora, CO · No drug or device payments recorded (2025) ·
(720) 848-0000 Dr. Anjeli Kalra, M.D.Aurora, CO · $1,579 in drug and device payments (2025) · Telehealth ·
(303) 724-7198 Dr. Celisse Zabalo, MDAurora, CO · No drug or device payments recorded (2025) ·
(720) 777-1234 Dr. Levi Keller, M.D.Aurora, CO · $9,164 in drug and device payments (2025) · Telehealth ·
(720) 848-0000 Dr. Maureen Bauer, MDAurora, CO · $5,849 in drug and device payments (2025) ·
(720) 777-0619 Dr. Tho Truong, M.D.Aurora, CO · $109 in drug and device payments (2025) · Telehealth ·
(720) 848-0000 Dr. Marshelle Warren, M.D.Boulder, CO · No drug or device payments recorded (2025) ·
(303) 589-1304 Dr. Michael Radtke, MDBroomfield, CO · No drug or device payments recorded (2025) ·
(312) 485-0210 Dr. Ryan Lahood, MDCastle Rock, CO · $2,031 in drug and device payments (2025) ·
(720) 858-7470 Dr. Chad Lomas, M.D.Centennial, CO · $2,621 in drug and device payments (2025) ·
(303) 632-3694 Dr. Edan Sarid, M.D.Centennial, CO · $7,058 in drug and device payments (2025) · Telehealth ·
(303) 224-4669 Dr. Joanne Vitanza, MDCentennial, CO · $213 in drug and device payments (2025) ·
(303) 799-6854 Dr. Leon Greos, MDCentennial, CO · No drug or device payments recorded (2025) ·
(303) 632-3694 Dr. Bonnie Baswell, M.D.Colorado Springs, CO · No drug or device payments recorded (2025) ·
(719) 867-7800 Dr. Christopher Webber, M.D.Colorado Springs, CO · $26,443 in drug and device payments (2025) ·
(719) 301-3800 Dr. Deborah Sweet, FNPColorado Springs, CO · $580 in drug and device payments (2025) ·
(719) 593-1234 Dr. Eric Caplan, M.D.Colorado Springs, CO · $43,539 in drug and device payments (2025) ·
(719) 867-7800 Dr. Jill Hanson, MDColorado Springs, CO · $4,853 in drug and device payments (2025) ·
(719) 867-7800 Dr. Kristine Hembre, D.O.Colorado Springs, CO · No drug or device payments recorded (2025) ·
(719) 593-1234 Dr. Sterling Slocum, D.O.Colorado Springs, CO · $3,383 in drug and device payments (2025) ·
(719) 345-1047 Dr. William Storms, MDColo Springs, CO · $5,481 in drug and device payments (2025) ·
(719) 955-6000 Dr. Anita Trikha, MDDenver, CO · No drug or device payments recorded (2025) ·
(303) 388-4461 Dr. Cheryl GioiaDenver, CO · No drug or device payments recorded (2025) ·
(303) 743-5855 Dr. Debra KondoraDenver, CO · No drug or device payments recorded (2025) ·
(303) 360-1278 Dr. Divya Chauhan, MDDenver, CO · $1,110 in drug and device payments (2025) · Telehealth ·
(303) 388-4461 Dr. Donald Leung, MDDenver, CO · $43,322 in drug and device payments (2025) ·
(303) 388-4461 Dr. Donna Bratton, MDDenver, CO · No drug or device payments recorded (2025) ·
(303) 388-4461 Dr. Eileen Wang, M.D.Denver, CO · $160,915 in drug and device payments (2025) · Telehealth ·
(303) 388-4461 Dr. Harold Nelson, MDDenver, CO · No drug or device payments recorded (2025) ·
(303) 388-4461 Dr. James Mcnamara, MDDenver, CO · No drug or device payments recorded (2025) ·
(301) 814-3555 Dr. Jessica Galant-swaffordDenver, CO · $487 in drug and device payments (2025) · Telehealth ·
(303) 388-4461 Dr. Jessica Hui, MDDenver, CO · $1,446 in drug and device payments (2025) ·
(303) 388-4461 Dr. John Williams, MDDenver, CO · No drug or device payments recorded (2025) ·
(303) 338-4545 Dr. Kanao Otsu, M.D.Denver, CO · No drug or device payments recorded (2025) · Telehealth ·
(303) 388-4461 Dr. Mohini PathriaDenver, CO · $75 in drug and device payments (2025) · Telehealth ·
(720) 516-9401 Dr. Monica Reddy, M.D.Denver, CO · $1,867 in drug and device payments (2025) ·
(720) 858-7474 Dr. Nathan Rabinovitch, MDDenver, CO · No drug or device payments recorded (2025) ·
(303) 388-4461 Dr. Rafeul Alam, MDDenver, CO · $86 in drug and device payments (2025) · Telehealth ·
(303) 388-4461 Dr. Rhonda SimpsonDenver, CO · No drug or device payments recorded (2025) ·
(303) 764-4450 Dr. Rohit Katial, MDDenver, CO · $252,015 in drug and device payments (2025) · Telehealth ·
(303) 388-4461 Dr. Roswitha Moehring, M.D.Denver, CO · No drug or device payments recorded (2025) ·
(303) 733-9886 Conditions Allergy & Immunology providers in Colorado commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Allergy & Immunology providers. Individual practices vary, so confirm with the provider before booking.
- Seasonal allergies
- Food allergies
- Asthma
- Eczema
- Chronic hives
Common questions
How many Allergy & Immunology providers are in Colorado?There are 101 Allergy & Immunology providers with active NPI records practicing in Colorado, according to federal NPPES data refreshed monthly.
Do Allergy & Immunology providers in Colorado offer telehealth?Yes. 20 of the 101 Allergy & Immunology providers in Colorado (about 20%) report offering telehealth services in CMS data.
Which cities in Colorado have the most Allergy & Immunology providers?Denver (29), Lakewood (14), Fort Collins (10) have the highest concentration of Allergy & Immunology providers in Colorado.
How many Allergy & Immunology providers in Colorado received drug or device company payments?58 of 101 Allergy & Immunology providers in Colorado (57%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Allergy & Immunology providers in Colorado treat?Allergy & Immunology providers commonly treat seasonal allergies, food allergies, asthma, eczema, chronic hives and related conditions. Individual practices vary, so confirm with the provider before booking.
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.
Do most Allergists in Colorado work in independent practices or large health systems?Among 51 Allergists in Colorado enrolled in Medicare, 37% bill through a solo or small practice with fewer than 10 clinicians, 33% through a mid-size group of 10 to 99, and 29% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Allergists in Colorado work at?According to CMS facility affiliation records, the Colorado hospitals where the most Allergists hold privileges are National Jewish Health in Denver; University of Colorado Hospital Authority in Aurora; Poudre Valley Hospital in Fort Collins.
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