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Dr. Willen is on Doximity

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Education & Training

  • MedStar Health/Georgetown University Hospital
    MedStar Health/Georgetown University HospitalResidency, Internal Medicine, 1975 - 1976
  • George Washington University
    George Washington UniversityResidency, Internal Medicine, 1973 - 1975
  • Wake Forest School of Medicine of Wake Forest Baptist Medical Center
    Wake Forest School of Medicine of Wake Forest Baptist Medical CenterClass of 1973

Certifications & Licensure

  • CA State Medical License
    CA State Medical License 1976 - 2025
  • American Board of Internal Medicine Internal Medicine
  • American Board of Internal Medicine Infectious Disease

Hospital Affiliations