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Peter Webb, MD, PHD

Peter Webb, MD, PHD

Dr. Webb is a board-certified dermatologist who trained at the University of California in San Francisco in dermatology. He specializes in medical, cosmetic and surgical dermatology including Mohs surgery. Prior to medical school, he attended Princeton University where he earned a PhD in biochemistry. He has practiced dermatology in San Mateo for many years, and joined California Skin Institute in 2014. He trained his daughter Hilary Johnston, PA-C, who also practices at California Skin Institute in San Mateo.


  • Medical Dermatology
  • Skin Cancer Screening and Treatment

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