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

Mariko Ishiyama, DO

Individual provider Family Medicine Physician · NPI 1952662991

Mariko Ishiyama, DO is a Hospitalist in Modesto, California. Qualified in 2012, 14 years ago. Practices with Galen Inpatient Physicians PC, a 1,031-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
14
Licensed in
CA
In the registry since
2012
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1441 Florida Ave
Modesto, CA 95350-4404
Phone: (209) 576-3525
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 12904 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 20A13309 (CA)

Record details

NPI number1952662991
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedJune 6, 2012
Last updated in NPPESAugust 14, 2024
Certification dateAugust 14, 2024
Mailing address3606 Brook St, Lafayette, CA 94549-4202

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Also practisesFAMILY PRACTICE
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Galen Inpatient Physicians Pc — 1031 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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