Maki Yamamoto, MD
NPI 1336328194ActiveIndividual· Surgery· Orange, CA
Surgery (MD) in Orange, California, trained at New York Medical College (class of 2004). 322 Medicare patients in 2024, $83,491 paid; nearly all of their 74 Part D prescriptions were generic (99%). Ethicon US, LLC was the largest of 2 companies reporting payments in 2025, $224.77 in all, mostly food and beverage.
Overview
| NPI | 1336328194 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Oct 29, 2007 |
| Last updated in NPPES | Nov 17, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | A95898 | CA |
| Surgery, Surgical Oncology | 2086X0206X | ME110286 | FL |
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 - General Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 322 |
|---|---|
| Services billed | 807 across 65 procedure codes |
| Paid by Medicare | $83,491 |
Part D prescriptions in 2024
| Prescriptions (claims) | 74 · 74 30-day fills |
|---|---|
| Patients | 63 |
| Total drug cost | $388.11 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | General Surgery |
| Telehealth | Offers telehealth |
Medical group
- University Surgeons of Orange A Medical GroupOrange, CA · 116 clinicians
Hospital affiliations
- Providence Mission HospitalMission Viejo, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$224.77 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ethicon US, LLC | $166.67 | 1 |
| Iovance Biotherapeutics, Inc. | $58.10 | 1 |
What the 2025 payments were for
- Food and Beverage$224.77 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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