Verified 2026 Physician Ranking

Top Allergists & Immunologists in Iowa, 2026

Published by Palm Beach County Medical Media Group · Last updated May 1, 2026

PBCMMG Excellence Certified \u2014 Recognizing Excellence in Healthcare

How this ranking was built: We applied PBCMMG's seven weighted criteria (board certification, years in active practice, disciplinary record, aggregate patient reviews, hospital affiliations, specialty training, peer recognition) to every allergy & immunology physician with active credentialing in Iowa. Sources: NPPES Registry, ABMS, state medical boards, aggregated public review data. Last reviewed May 2026.

  1. #1

    John Kammermeyer, MD

    Allergy & ImmunologyIowa, IA21+ years in practice

    John Kammermeyer, MD, practices allergy & immunology in Iowa, IA. NPI-verified active practice since 2005.

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  2. #2

    Marta Little, MD

    Allergy & ImmunologyIowa, IA21+ years in practice

    Marta Little, MD, practices allergy & immunology in Iowa, IA. NPI-verified active practice since 2005.

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  3. #3

    Francisco Peralta, MD

    Allergy & ImmunologyIowa, IA20+ years in practice

    Francisco Peralta, MD, practices allergy & immunology in Iowa, IA. NPI-verified active practice since 2006.

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  4. #4

    Adrian Letz, MD

    Allergy & ImmunologyIowa, IA20+ years in practice

    Adrian Letz, MD, practices allergy & immunology in Iowa, IA. NPI-verified active practice since 2006.

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  5. #5

    James Wille, MD

    Allergy & ImmunologyIowa, IA20+ years in practice

    James Wille, MD, practices allergy & immunology in Iowa, IA. NPI-verified active practice since 2006.

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  6. #6

    Sean Stanga, MD

    Allergy & ImmunologyIowa, IA19+ years in practice

    Sean Stanga, MD, practices allergy & immunology in Iowa, IA. NPI-verified active practice since 2007.

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  7. #7

    Brad McClimon, MD

    Addiction MedicineIowa, IA19+ years in practice

    Brad McClimon, MD, practices addiction medicine in Iowa, IA. NPI-verified active practice since 2007.

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  8. #8

    Erin Rasmussen, MD

    Allergy & ImmunologyIowa, IA11+ years in practice

    Erin Rasmussen, MD, practices allergy & immunology in Iowa, IA. NPI-verified active practice since 2015.

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  9. #9

    Alick Feng, MD

    Addiction MedicineMinnesota, MN8+ years in practice

    Alick Feng, MD, practices addiction medicine in Iowa, IA. NPI-verified active practice since 2018.

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