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

Seiya Tokunaga, DO

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1629572334

Seiya Tokunaga, DO is a Hospitalist in Oxnard, California. Qualified in 2018, 8 years ago. Practices with Socal Hospitalists, a 30-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
8
Licensed in
CA
In the registry since
2018
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

1600 N Rose Ave
Oxnard, CA 93030-3722
Phone: (805) 988-2505
Fax: (805) 988-2502
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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 20A17872 (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1629572334
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 19, 2018
Last updated in NPPESNovember 7, 2021
Certification dateNovember 7, 2021
Mailing address1600 N Rose Ave, Oxnard, CA 93030-3722

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Socal Hospitalists — 30 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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