Verified 2026 Physician Ranking

Top Allergists & Immunologists in Illinois, 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 Illinois. Sources: NPPES Registry, ABMS, state medical boards, aggregated public review data. Last reviewed May 2026.

  1. #1

    Mark Lowenthal, MD

    Allergy & ImmunologyIllinois, IL21+ years in practice

    Mark Lowenthal, MD, practices allergy & immunology in Illinois, IL. NPI-verified active practice since 2005.

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  2. #2

    Greg Sharon, MD,

    Allergy & ImmunologyIllinois, IL21+ years in practice

    Greg Sharon, MD,, practices allergy & immunology in Illinois, IL. NPI-verified active practice since 2005.

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  3. #3

    Andrey Leonov, MD

    Allergy & ImmunologyIllinois, IL20+ years in practice

    Andrey Leonov, MD, practices allergy & immunology in Illinois, IL. NPI-verified active practice since 2006.

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  4. #4

    James Hildebrandt, DO

    Hospital MedicineIllinois, IL20+ years in practice

    James Hildebrandt, DO, practices hospital medicine in Illinois, IL. NPI-verified active practice since 2006.

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  5. #5

    Waheeda Hirani, MD

    Allergy & ImmunologyIllinois, IL20+ years in practice

    Waheeda Hirani, MD, practices allergy & immunology in Illinois, IL. NPI-verified active practice since 2006.

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  6. #6

    James Moy, MD

    Allergy & ImmunologyIllinois, IL20+ years in practice

    James Moy, MD, practices allergy & immunology in Illinois, IL. NPI-verified active practice since 2006.

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  7. #7

    Julie Kim, MD

    Hospital MedicineCalifornia, CA16+ years in practice

    Julie Kim, MD, practices endocrinology in California, CA. NPI-verified active practice since 2010.

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  8. #8

    Sherlyana Surja, MD

    Allergy & ImmunologyIllinois, IL15+ years in practice

    Sherlyana Surja, MD, practices allergy & immunology in Illinois, IL. NPI-verified active practice since 2011.

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  9. #9

    Rayna Schwartz, MD

    Allergy & ImmunologyIllinois, IL4+ years in practice

    Rayna Schwartz, MD, practices allergy & immunology in Illinois, IL. NPI-verified active practice since 2022.

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