James Leonard Buxbaum, M.D.
NPI 1306088174ActiveIndividual· Internal Medicine, Gastroenterology· Los Angeles, CA
Internal Medicine, Gastroenterology (M.D.) in Los Angeles, California, trained at University of California, San Francisco School of Medicine (class of 2003). 475 Medicare patients in 2024, $149,653 paid; nearly all of their 228 Part D prescriptions were generic (95%). Olympus Corporation was the largest of 5 companies reporting payments in 2025, $23,833 in all, mostly consulting fees.
Overview
| NPI | 1306088174 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 25, 2009 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Oct 18, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A89525 | 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 | 475 |
|---|---|
| Services billed | 1,197 across 73 procedure codes |
| Paid by Medicare | $149,653 |
Part D prescriptions in 2024
| Prescriptions (claims) | 228 · 320 30-day fills |
|---|---|
| Patients | 103 |
| Total drug cost | $7,529 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Usc Care Medical Group IncLos Angeles, CA · 1,380 clinicians
Hospital affiliations
- Keck Hospital of UscLos Angeles, CA
- Usc Arcadia HospitalArcadia, CA
- Usc Verdugo Hills HospitalGlendale, CA
Industry payments (Open Payments)
- 2025$23,833 · 27 payments from 5 companies
- 2024$6,047 · 9 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus Corporation | $16,563 | 7 |
| Boston Scientific Corporation | $5,781 | 9 |
| Olympus Corporation of the Americas | $1,345 | 8 |
| Amgen Inc. | $125.00 | 1 |
| Cook Medical LLC | $18.06 | 2 |
What the 2025 payments were for
- Consulting Fee$16,080 · 5 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$5,500 · 4 payments
- Travel and Lodging$1,389 · 3 payments
- Food and Beverage$863.27 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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