Marc C. Kaneshiro, M.D.
NPI 1083865836ActiveIndividual· Internal Medicine, Gastroenterology· West Hollywood, CA
Internal Medicine, Gastroenterology (M.D.) in West Hollywood, California, trained at University of Hawaii John A. Burns School of Medicine (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $466,775 for 1,316 claims, against $105,272 paid for services in 2024. Genzyme Corporation was the largest of 4 companies reporting payments in 2025, $346.08 in all, mostly food and beverage.
Overview
| NPI | 1083865836 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 9, 2008 |
| Last updated in NPPES | Aug 11, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 109630 | CA |
| Internal Medicine | 207R00000X | A109630 | 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 | 453 |
|---|---|
| Services billed | 1,083 across 52 procedure codes |
| Paid by Medicare | $105,272 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,316 · 2,408 30-day fills |
|---|---|
| Patients | 333 |
| Total drug cost | $466,775 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliations
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
- Santa Monica - UCLA Med Ctr & Orthopaedic HospitalSanta Monica, CA
Industry payments (Open Payments)
- 2025$346.08 · 8 payments from 4 companies
- 2024$121.26 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $143.84 | 4 |
| Abbvie Inc. | $125.62 | 1 |
| Ardelyx, Inc. | $68.65 | 2 |
| Laborie Medical Technologies Corp. | $7.97 | 1 |
What the 2025 payments were for
- Food and Beverage$346.08 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 29 gastroenterologists in West Hollywood · All gastroenterologists in California