Masaharu Osato, M.D.
NPI 1265470280ActiveIndividual· Internal Medicine, Gastroenterology· Torrance, CA
Internal Medicine, Gastroenterology (M.D.) in Torrance, California, trained at Loma Linda University School of Medicine (class of 1983). Mostly services rather than prescriptions: Medicare paid $240,967 for 302 patients in 2024, with only 43 Part D claims. Abbott Laboratories reported $29.00 in payments in 2024, mostly food and beverage.
Overview
| NPI | 1265470280 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 3, 2006 |
| Last updated in NPPES | Mar 1, 2026 |
| Certified by provider | Mar 1, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G060449 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 302 |
|---|---|
| Services billed | 9,351 across 72 procedure codes |
| Paid by Medicare | $240,967 |
Part D prescriptions in 2024
| Prescriptions (claims) | 43 · 47 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $12,184 |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Osato Medical Clinic IncTorrance, CA · 4 clinicians
Industry payments (Open Payments)
- 2024$29.00 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $29.00 | 1 |
What the 2024 payments were for
- Food and Beverage$29.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 58 gastroenterologists in Torrance · All gastroenterologists in California