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Dr. Zallen is on Doximity

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Education & Training

  • University of Pennsylvania Health System
    University of Pennsylvania Health SystemResidency, Internal Medicine, 2014 - 2017
  • Georgetown University School of Medicine
    Georgetown University School of MedicineClass of 2014

Certifications & Licensure

  • PA State Medical License
    PA State Medical License 2014 - 2024
  • American Board of Internal Medicine Internal Medicine

Publications & Presentations

PubMed