Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. John Charles Preston III, MD

Individual provider Psychiatry Physician · NPI 1932374238

Dr. John Charles Preston III, MD is a Psychiatry Physician in San Diego, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

480 Alta Rd
San Diego, CA 92179
Phone: (619) 661-6500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence G63929 (CA)

Record details

NPI number1932374238
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 28, 2008
Last updated in NPPESApril 28, 2008

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