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

Dr. Francis Kuan-Jen Ko, MD

Individual provider Family Medicine Physician · NPI 1912102179

Dr. Francis Kuan-Jen Ko, MD is a Family Medicine Physician in Vallejo, 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

355 Tuolumne St
Vallejo, CA 94590-5700
Phone: (707) 553-5509
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence A62309 (CA)

Record details

NPI number1912102179
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 18, 2007
Last updated in NPPESJuly 8, 2007

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