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Allergists (Internal Medicine) in Iowa

Data updated monthly · Last refresh October 2026

6 Allergy & Immunology (Internal Medicine) providers practice in Iowa, including 1 (17%) offering telehealth. The largest concentration is in Iowa City. 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.

6providers
1telehealth
Iowa Citytop city

Allergy & Immunology (Internal Medicine) by city in Iowa

Choose a city to see providers there.

Allergy & Immunology (Internal Medicine) in Iowa City5 providers
Allergy & Immunology (Internal Medicine) in Dubuque1 providers

Where Allergists (Internal Medicine) in Iowa practice

From CMS Medicare enrollment records covering 4 of the 6 providers listed here (67%). Providers who do not bill Medicare are not included in these figures.

Largest practice groups

Group (as registered with Medicare)Allergists (Internal Medicine)All clinicians in groupMain city
State University of Iowa31,886Iowa City

Hospitals where they hold privileges

HospitalCityOwnershipCMS star ratingAllergists (Internal Medicine) affiliated
University of Iowa Hospital & ClinicsIowa CityGovernment2 of 53

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 (Internal Medicine) providers in Iowa

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. Brad Mcclimon, M.D.
Dubuque, IA · $100 in drug and device payments (2025) · (563) 584-4485
Dr. Amy Yoder Dowden, MD
Iowa City, IA · No drug or device payments recorded (2025) · (319) 356-3697
Dr. Jeffrey Zavala, MD
Iowa City, IA · No drug or device payments recorded (2025) · Telehealth · (319) 356-3349
Dr. Mary Fasano, MD
Iowa City, IA · $74 in drug and device payments (2025) · (319) 356-3692
Dr. Shayna Melvani, M.D.
Iowa City, IA · $75 in drug and device payments (2025) · (319) 356-1616
Dr. Zuhair Ballas, MD
Iowa City, IA · No drug or device payments recorded (2025) · (319) 356-3697

Common questions

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

There are 6 Allergy & Immunology (Internal Medicine) providers with active NPI records practicing in Iowa, according to federal NPPES data refreshed monthly.

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

Yes. 1 of the 6 Allergy & Immunology (Internal Medicine) providers in Iowa (about 17%) report offering telehealth services in CMS data.

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

Iowa City (5), Dubuque (1) have the highest concentration of Allergy & Immunology (Internal Medicine) providers in Iowa.

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.

Which hospitals do Allergists (Internal Medicine) in Iowa work at?

According to CMS facility affiliation records, the Iowa hospitals where the most Allergists (Internal Medicine) hold privileges are University of Iowa Hospital & Clinics in Iowa City.

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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 Iowa? Get featured.