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

Warren Toshiro Yamashita, MD, MPH

Individual provider Addiction Medicine (Family Medicine) Physician · NPI 1982137691

Warren Toshiro Yamashita, MD, MPH is a Family Practice in Tustin, California. Graduated from University of Southern California Keck School of Medicine in 2017, 9 years ago. Practices with Harbor Community Clinic Inc, a 16-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
9
Trained at
University of Southern California Keck School of Medicine
Licensed in
CA
In the registry since
2017
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

See every abbreviation used in this directory →

Practice location Address checks out

1 Hope Dr
Tustin, CA 92782-0221
Phone: (714) 247-0300
Fax: (714) 259-1598
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 947 S Anaheim Blvd Ste 260, Anaheim, CA 92805-5591 — (714) 247-0300
  • 1100b N Tustin Ave Ste A, Santa Ana, CA 92705-3505 — (714) 247-0300
  • 14642 Newport Ave Ste 200, Tustin, CA 92780-6058 — (714) 247-0300

Specialties & licences

Addiction Medicine (Family Medicine) Physician (primary) Taxonomy 207QA0401X · Licence A167101 (CA)

Record details

NPI number1982137691
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MPH
Sole proprietorNo
NPI enumeratedApril 10, 2017
Last updated in NPPESMay 5, 2022
Certification dateMay 5, 2022

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Harbor Community Clinic Inc — 16 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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