Photo of Yoko Mashino

Yoko Mashino,  MD  

Primary Care Physician

Internal Medicine

Accepting New Patients


Professional Statement

Dr. Yoko Mashino is a practicing Internist in Seattle, WA. She completed a residency at Mount Sinai Beth Israel. She currently practices at Swedish Medical Center and is affiliated with St Francis Hospital, St Joseph Medical Center and Swedish Medical Center Ballard Campus.

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Board Certifications

American Board of Internal Medicine
Internal Medicine


  • English

Practice Locations

Affiliated Facilities
  • Swedish Issaquah
  • Swedish Cherry Hill
  • Swedish First Hill