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

Ronald K Shimmin, MD

Individual provider Occupational Medicine Physician · NPI 1225153315

Ronald K Shimmin, MD is an Occupational Medicine Physician in San Marcos, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
Specialties on file
2
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

1146 San Marino Dr
San Marcos, CA 92078-4649
Phone: (760) 471-2033
Fax: (760) 471-2083
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence A37055 (CA)
Occupational Medicine Physician Taxonomy 2083X0100X · Licence A37055 (CA)

Record details

NPI number1225153315
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 20, 2007
Last updated in NPPESMarch 16, 2015

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