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Dermatologist (skin)
30 years of experience
Video profile
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (2)

The overall average patient rating of Dr. John Koo is Good. Dr. Koo has been reviewed by 11 patients who have provided 2 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 2.3
Promptness 1.5
Courteous Staff 4.1
Accurate Diagnosis 3.7
Bedside Manner 2.5
Spends Time with Me 2.8
Follows Up After Visit 3.0

Specialties & Research

Dr. John Koo, MD is board certified in Dermatology.

  • He has special expertise in 8 areas:
  • Acne (Acne Vulgaris)
  • Acne Rosacea
  • Light Therapy (Phototherapy)
  • Melanoma
  • Photosensitivity Disorders
  • Psoriasis
  • Psoriatic Arthritis
  • Skin Cancer

Education & Awards

Dr. Koo graduated from Harvard University , Boston. He has 2 awards.

Castle Connolly America's Top Doctors® (2006 - 2008, 2010 - 2015)
Patients' Choice Award (2008 - 2011)


Dr. Koo has 5 hospital affiliations:

  • UCSF Medical Center / Moffitt-Long Hospitals 
  • John Muir Medical Center, Walnut Creek Campus 


  • Japanese

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Additional Information
Dr. John Ying Ming Koo MD is a male Dermatologist, has 30 years of experience and practices in Dermatology.
Where does Dr. John Y. Koo practice?
Dr. John Koo has 1 office location.
Dr. John Koo practices Dermatology near San Francisco, CA.
See San Francisco Dermatologists.