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Dr. John Preston III, MD

Dr. John Preston III, MD

Age 68 Psychiatry M
(1) 1 reviews


Dr. John Preston III, MD is a psychiatry specialist in San Diego, CA. Dr. Preston III completed a residency at VA MC/UC San Francisco. He currently practices at Richard J Donovan Correctional Facility. Dr. Preston III is board certified in Psychiatry.


  • VA MC/UC San Francisco, Residency Hospital — 1991
  • Valley MC/UC San Francisco, Internship Hospital — 1988
  • Ponce School of Medical, Medical School — 1987


  1. Practice

    1. 1
      Richard J Donovan Correctional Facility
      480 ALTA RD, San Diego, CA 92179 Existing Patients: (619) 661-6500

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Dr. John Preston III, MD
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Frequently Asked Questions

Dr. Preston III frequently treats Psychiatric Diseases, ADHD and-or ADD, and Major Depressive Disorder.  

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