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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
Dana Point, CA 92629
Recommend this Physician Request an Update for this Physician
4.7 out of 5 (86 Ratings | 11 Comments)


he is a very caring doctor. i had back surgery and he helped thru the process
Provider ask that I call him regarding insurance letter. Called as instructed and have called since [date] over 7 times and he has not returned my call. Very disappointing.
*Dr. Ko is one of the best doctors I've ever had. He has treated me with many procedures for about 15 years. He is one of the most popular drs. at St. Jude Heritage.
Excellent experience with *Dr. Ko.
11 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