Dr. William T. O’Connor

Medical Doctor

Dr. William Thomas O’Connor, Jr., was raised and educated in Northeastern Ohio. In 1977 he earned his baccalaureate degree with honors in Molecular, Cellular, and Developmental Biology at the University of Colorado. He received his doctorate of Medicine at the University of Cincinnati in 1981. He completed his post-doctorate studies through the University of California at Davis where he subsequently served as an Assistant Clinical Professor for approximately ten years. He was board certified in 1984 and is currently licensed as a physician & surgeon in both California and Oregon. He is a certified Civil Surgeon, has been in the active practice of medicine as the medical director of a Northern California community clinic for sixteen years, and now is in private practice in Vacaville, California.


  • 300 Mason St, Vacaville, CA, 95688

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