Aya Eguchi, M.D.
NPI 1578732541ActiveIndividual· Internal Medicine· Patton, CA
Internal Medicine (M.D.) in Patton, California, trained at Loma Linda University School of Medicine (class of 2007). Part D covered 17 prescriptions written in 2024, 82% of them generic. Galderma Laboratories, L.P. reported $24.04 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1578732541 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 25, 2008 |
| Last updated in NPPES | Sep 26, 2023 |
| Certified by provider | Sep 26, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A106789 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 17 · 19 30-day fills |
|---|---|
| Total drug cost | $852.00 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Internal Medicine |
Medical group
- Department of State HospitalsNapa, CA · 270 clinicians
Hospital affiliation
- Arrowhead Regional Medical CenterColton, CA
Industry payments (Open Payments)
- 2025$24.04 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Galderma Laboratories, L.P. | $24.04 | 1 |
What the 2025 payments were for
- Food and Beverage$24.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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