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

Toyohisa Thomas Ishii, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1841379997

Toyohisa Thomas Ishii, MD is an Obstetrics & Gynecology Physician in Valley Center, 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

27007 Red Ironbark Dr
Valley Center, CA 92082-7259
Phone: (760) 751-9143
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence G27949 (CA)

Record details

NPI number1841379997
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 2, 2006
Last updated in NPPESApril 14, 2009

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