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

Dr. John Edward Ruark, MD

Individual provider Psychiatry Physician · NPI 1235294968

Dr. John Edward Ruark, MD is a Psychiatry Physician in Menlo Park, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

885 Oak Grove Ave Ste 301
Menlo Park, CA 94025-4433
Phone: (650) 327-7100
Fax: (650) 327-1420
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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 G50171 (CA)

Record details

NPI number1235294968
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 22, 2006
Last updated in NPPESJuly 8, 2007
Mailing address885 Oak Grove Avenue, Suite 301, Menlo Park, CA 94025

Other providers in Menlo Park