An Yen, MD


With over 30+ years of providing medical care to patients, conducting research, and teaching, Dr. An Yen is a highly regarded dermatologist. Dr. Yen splits his time between teaching resident physicians, leading a charity for International Medical Education and practicing Dermatology. He works at University of California Davis as a part-time staff member and Clinical Professor in 2018.

Clinical Interests

Dr. Yen’s clinical interests are focused on 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


  • Internal Medicine, Loyola University Chicago
  • Dermatology, University of California San Diego

Charitable / Volunteer Activities

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

Professional Memberships

  • American Academy of Dermatology
  • American Society of Mohs Surgery