William Johncox, PA-C, DC
Practice: California Advanced Pain & Spine Specialists
Specialty: Physician Assistant, Pain Management
Office locations: Fresno, CA
William Johncox, PA-C, DC, works at California Advanced Pain & Spine Specialists. He earned a BS at UC Davis, an MA at CSU Fresno, a Doctor of Chiropractic degree at LACC, and his physician assistant degree at Stanford University. Specialized in chiropractic orthopedics and pain management, his expertise spans orthopedics, neurosurgery, occupational medicine, and workers' compensation evaluation.
William Johncox, PA-C, DC, works at California Advanced Pain & Spine Specialists. He earned a BS at UC Davis, an MA at CSU Fresno, a Doctor of Chiropractic degree at LACC, and his physician assistant degree at Stanford University. Specialized in chiropractic orthopedics and pain management, his expertise spans orthopedics, neurosurgery, occupational medicine, and workers' compensation evaluation.
Main Office
Suite 102
Fresno, CA 93720
William Johncox, PA-C, has been in this valley most of his life. A strong work ethic led him from the west side of the valley to UC Davis where he double-majored in Spanish (his first language) and bacteriology. He then worked for two years helping raise his brother and upgrading the family’s old rentals while working summers as well in the tomato harvest.
In the meantime, he studied at California State University Fresno and earned a masters degree in Spanish literature. From there, he studied at LACC and received a Doctor of Chiropractic degree. He worked in private practice and occupational medicine until he returned to school in 2005 to study for his physician assistant degree at Stanford University. He planned to expand his scope of practice and do more for his patients. Along the way, he earned a specialty in chiropractic orthopedics, a certificate in workers’ compensation from UC Riverside, and was a QME (Qualified Medical Examiner) and AME (Agreed Medical Examiner). He worked several years at University Medical Center first in orthopedics and then in neurosurgery. He practiced for over a year in occupational medicine.
Dr. Johncox has been in pain management since 1996. He is pleased to be in Dr. Salazar’s practice and enjoys a collegial relationship with his coworkers. He enjoys growing with the practice. He has three adult children and three grandchildren.
William speaks English and Spanish fluently.

He’s very nice and polite
Curious, polite and friendly. Glad to have him as my Dr. Thanks for you help.
Great visit! Dr. John Cox is very caring and knowledgeable. My mom really likes him!
He took his time to lessen to me and check my problems.
Dr. Johncox is an outstanding doctor. He listens to your concerns. I appreciate that.
I love seeing him. He is patient and he listens
He listens to me.,and helps me deal with pain. I appreciate that.
Dr Johncox is always thorough and listens when I describe my pain. He shows compassion.
Hes very patient Very helpful.
Very caring and listened well to my concerns. Great man!