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

Individual provider Internal Medicine Physician · NPI 1861537565

Dr. David W. Ralston, MD is an Internal Medicine Physician in San Luis Obispo, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

1 Grand Ave Cal Poly Student Health Services
San Luis Obispo, CA 93407-9000
Phone: (805) 756-1211
Fax: (805) 756-5286
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G32733 (CA)

Record details

NPI number1861537565
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 20, 2007
Last updated in NPPESJuly 8, 2007

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