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

Dr. Russell Howard Marks, MD

Individual provider Forensic Psychiatry Physician · NPI 1144478751

Dr. Russell Howard Marks, MD is a Forensic Psychiatry Physician in San Luis Obispo, 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.

See every abbreviation used in this directory →

Practice location Address checks out

851 Murray Ave
San Luis Obispo, CA 93405-1736
Phone: (805) 541-9327
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Forensic Psychiatry Physician (primary) Taxonomy 2084F0202X · Licence G39655 (CA)

Record details

NPI number1144478751
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 8, 2008
Last updated in NPPESSeptember 8, 2008