An Yen, MD

My philosophy

As a clinical professor in general dermatology with near 40 years of experience and a subspecialist of micrographic dermatologic surgery, I strive to give my patients the best possible outcome. I split my time between teaching resident physicians, leading a charity for International Dermatology Education and practicing Dermatology.

Clinical Interests

  • General and surgical dermatology including excisions, cosmetic reconstruction, and Mohs micrographic surgery

Degrees and Education

  • Xuzhou Medical College (China)

Board Certifications

  • American Board of Dermatology
  • American Board of Dermatology – Micrographic Dermatologic Surgery


  • Internal Medicine, Loyola University Chicago
  • Dermatology, UC San Diego, san Diego CA

Charitable / Volunteer Activities

  • Volunteer Clinical Professor, University of California, Davis
  • Founder, International Dermatology Education Charitable Organization
  • Honorary President, North American Chinese Dermatology Association

Professional Memberships

  • American Academy of Dermatology
  • American Society of Mohs Surgery