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

Dr. Jonathan Oishi, DO

Individual provider Hospitalist Physician · NPI 1396109781

Dr. Jonathan Oishi, DO is an Internal Medicine in Irvine, California. Qualified in 2016, 10 years ago. Practices with Healthcare Partners Affiliates Medical Group, a 790-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
10
Licensed in
CA
In the registry since
2016
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

11 Technology Dr
Irvine, CA 92618-2302
Phone: (855) 206-6764
Fax: (949) 923-3575
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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 20A17106 (CA)
Hospitalist Physician Taxonomy 208M00000X · Licence 20A17106 (CA)

Record details

NPI number1396109781
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 11, 2016
Last updated in NPPESNovember 24, 2025
Certification dateNovember 24, 2025
Mailing addressPo Box 35380, Las Vegas, NV 89133-5380

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Healthcare Partners Affiliates Medical Group — 790 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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