James H. Ashizawa, MD
NPI 1588654123ActiveIndividual· Family Medicine· San Juan Capistrano, CA
Family Medicine (MD) with Memorialcare Medical Foundation, practicing in San Juan Capistrano, California. Their prescriptions cost Medicare Part D more than their services did: $855,717 for 7,587 claims, against $27,265 paid for services in 2024. Amgen Inc. was the largest of 4 companies reporting payments in 2025, $200.66 in all, mostly food and beverage. Lists Memorialcare Saddleback Medical Center as a hospital affiliation.
Overview
| NPI | 1588654123 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2005 |
| Last updated in NPPES | Jul 8, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A41984 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 137 |
|---|---|
| Services billed | 765 across 76 procedure codes |
| Paid by Medicare | $27,265 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,587 · 17,754 30-day fills |
|---|---|
| Patients | 556 |
| Total drug cost | $855,717 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Memorialcare Medical FoundationLong Beach, CA · 566 clinicians
Hospital affiliation
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
Other facilities
- Providence at Home With Compassus Home Health Orange CountyHome health agency · Anaheim, CA
Industry payments (Open Payments)
- 2025$200.66 · 4 payments from 4 companies
- 2024$78.54 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $120.60 | 1 |
| Exact Sciences Corporation | $32.65 | 1 |
| Gilead Sciences, Inc. | $31.65 | 1 |
| Lilly USA, LLC | $15.76 | 1 |
What the 2025 payments were for
- Food and Beverage$200.66 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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