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WARREN TOSHIRO YAMASHITA MD, MPH
NPI 1982137691
Family Medicine - Addiction Medicine in Tustin, CA

Active since April 10, 2017PECOS EnrolledAccepts Medicare Assignment
1 HOPE DR, TUSTIN, CA 92782(714) 247-0300(714) 259-1598 Get Directions Write a Review

NPPES record last updated: May 5, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 5, 2022, Feb 28, 2022, Feb 25, 2022 and 2 more (5 updates tracked since 2017).

About Warren Toshiro Yamashita Md, Mph NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WARREN TOSHIRO YAMASHITA MD, MPH (NPI 1982137691) is an individual addiction medicine provider in Tustin, California, licensed in California (A167101) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of Southern California Keck School Of Medicine (2017).

NPPES Registry Identity

NPI1982137691
Entity TypeIndividualMale
Primary Taxonomy207QA0401X
Provider Legal NameWARREN TOSHIRO YAMASHITACredential: MD, MPH
Location Address1 HOPE DRTustin, CA 92782-0221
Mailing Address14642 Newport Ave Ste 300Tustin, CA 92780-6059 · (714) 247-0300 · Fax (714) 259-1369
Phone(714) 247-0300
Fax(714) 259-1598
Sole ProprietorNo
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2017
Enumeration DateApril 10, 2017
Last NPPES UpdateMay 5, 20225 updates tracked since enumeration
NPPES CertifiedMay 5, 2022
✔ NPI 1982137691 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily Medicine · Addiction MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207QA0401X
License✔ Licensed in CA · A167101
Definition
A family medicine physician who specializes in the diagnosis and treatment of addictions.
1 HOPE DR, Tustin, CA 92782
Open in Google Maps ↗

Secondary Practice Locations 3

Location 11100B N Tustin Ave Ste ASanta Ana, CA 92705-3505 · Phone (714) 247-0300 · Fax (714) 259-1598
Location 2947 S Anaheim Blvd Ste 260Anaheim, CA 92805-5591 · Phone (714) 247-0300 · Fax (714) 259-1598
Location 314642 Newport Ave Ste 200Tustin, CA 92780-6058 · Phone (714) 247-0300 · Fax (714) 259-1598

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Warren Toshiro Yamashita Md, Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3678993433
PECOS Enrollment IDI20201015002454
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92782 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ELIZABETH TRUJILLO RN
Registered Nurse
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
KIMBERLY TORRES ACSW
Social Worker (Clinical)
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
SILVIA CHOVIT ACSW
Social Worker (Clinical)
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
VANESSA YVONNE SANTIAGO VO FNP
Nurse Practitioner (Family)
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
RAFAEL CEJA OCHOA RDH
Dental Hygienist
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
JONATHAN RAMONTY CHHEAN NP
Nurse Practitioner (Family)
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
SUNEUN SARAH REICHERT DO
Family Medicine
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300
CATHRIN HEE LIM MD
Family Medicine
1 HOPE DR
TUSTIN, CA 92782
Orange County (714) 247-0300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Warren Yamashita's NPI number?

The NPI number for Warren Yamashita is 1982137691. It was assigned to this individual provider in the NPPES registry on April 10, 2017.

Where is Warren Yamashita located?

Warren Yamashita practices at 1 Hope Dr, Tustin, CA 92782. The listed phone number is (714) 247-0300.

What is Warren Yamashita's specialty?

The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.

Is Warren Yamashita enrolled in Medicare?

Yes. Warren Yamashita is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Warren Yamashita was last updated on May 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.