Toshia Ann Yamaguchi, M.D.
NPI 1932558715 · Psychiatry Physician · Riverside, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Toshia Ann Yamaguchi, M.D. is a Psychiatry Physician provider in Riverside, CA (NPI 1932558715).
Provider details
- NPI number
- 1932558715
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A150914 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-13
- Last updated
- 2020-02-10
- Certified
- 2020-02-10
Frequently asked questions
- What is Toshia Ann Yamaguchi's NPI number?
- Toshia Ann Yamaguchi's National Provider Identifier (NPI) is 1932558715, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Toshia Ann Yamaguchi's specialty?
- Toshia Ann Yamaguchi is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Toshia Ann Yamaguchi located?
- Toshia Ann Yamaguchi's practice location on file with NPPES is 4095 County Circle Dr, Riverside, CA 92503-3410.
- What is Toshia Ann Yamaguchi's phone number?
- The practice phone number listed in the NPPES registry for Toshia Ann Yamaguchi is (951) 358-4500.
- Does Toshia Ann Yamaguchi accept Medicare?
- Toshia Ann Yamaguchi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Toshia Ann Yamaguchi's NPI active?
- Yes — Toshia Ann Yamaguchi's NPI (1932558715) is active in the NPPES registry as of the last update on 2020-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.