Quick answers
- Does James S. Yoshikawa accept Medicare assignment?
- Yes. Medicare's clinician data says James S. Yoshikawa accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does James S. Yoshikawa see?
- In 2024, CMS data shows 77 Original Medicare patients and 183 services for James S. Yoshikawa. This counts Original Medicare only and measures volume, not quality.
- What is James S. Yoshikawa's NPI number?
- 1750436473. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for James S. Yoshikawa, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 77 |
|---|---|
| Services billed to Medicare | 183 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)110 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)29 services
- Assessment of emotional or behavioral problems (96127)14 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure70%
- Arthritis39%
- Diabetes32%
- Chronic kidney disease22%
- Ischemic heart disease18%
Practice locations
Addresses where James S. Yoshikawa is enrolled with Medicare (CMS data updated October 2, 2026).
- 710 N Euclid StAnaheim, CA 92801 (714) 517‑2000
- 710 N Euclid St, Suite 301Anaheim, CA 92801 (714) 517‑2000
Group practices
Medicare enrollment lists James S. Yoshikawa as a member of this group (CMS data updated October 2, 2026).
- Primary and Multi-Specialty Clinics of Anaheim7 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Anaheim
Clinicians with the same Medicare primary specialty in Anaheim, CA — not a recommendation.
Other clinicians in Primary and Multi-Specialty Clinics of Anaheim
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1976 (50 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750436473 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians