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St. Jude Affiliated Physicians
P.O. Box 4138
Fullerton, CA 92834

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William Ko, MD
Practice accepting new patients.

William Ko, MD

(714) 446-5200
Primary Specialties
  • Pain Medicine
    (Board Certified)
Secondary Specialties
  • Anesthesiology
    (Board Certified)
Medical Groups & Affiliations
  • St. Jude Affiliated Physician
  • St. Jude Heritage Medical Group
  • Additional Languages Spoken
    Mandarin Chinese

Primary Office

100 E. Valencia Mesa Dr.
Suite 310
Fullerton, CA 92835
(714) 446-5200
(714) 446-5181
Web Page:

Secondary Office

24060 Camino del Avion
Suite A
Recommend this Physician Request an Update for this Physician
4.5 out of 5 (81 Ratings | 13 Comments)


Excellent experience with *Dr. Ko.
I already recommend Dr. Ko to anyone and everyone I meet with any pain problems especially lower back pain
I love *Dr. Ko! He's the best!
waiting a few minutes is understandable, waiting an hour and a half to two hours is not.
I do have a couple follow up questions regarding prescribed treatment and I will contact Dr. Ko via the web portal.
13 Total Comments Page 1 2 3   Next


  • Medical School:
    University of Southern California School of Medicine - Los Angeles , CA
  • Internship:
    Harbor-UCLA Medical Center - Torrance , CA
  • Residency:
    Harbor-UCLA Medical Center - Torrance , CA
  • Fellowship:
    UCLA Medical Center - Los Angeles , CA
  • Board Certified in Anesthesiology
  • Board Certified in Pain Medicine


  • Physicians of Excellence, OCMA - 2014
  • Physicians of Excellence, OCMA - 2016
  • Physicians of Excellence, OCMA - 2017
  • Physicians of Excellence, OCMA - 2018