Mark Gabriel, D.O.
NPI 1982642724ActiveIndividual· Internal Medicine, Gastroenterology· Highland, CA
Internal Medicine, Gastroenterology (D.O.) with Homan A Zadeh MD Mph Inc, practicing in Highland, California. Their prescriptions cost Medicare Part D more than their services did: $68,251 for 261 claims, against $38,712 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 13 companies reporting payments in 2025, $684.66 in all, mostly food and beverage.
Overview
| NPI | 1982642724 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 3, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 20A6346 | 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 | 240 |
|---|---|
| Services billed | 376 across 19 procedure codes |
| Paid by Medicare | $38,712 |
Part D prescriptions in 2024
| Prescriptions (claims) | 261 · 324 30-day fills |
|---|---|
| Patients | 90 |
| Total drug cost | $68,251 |
| Generic share | 70% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Homan A Zadeh MD Mph IncPalm Springs, CA · 11 clinicians
Industry payments (Open Payments)
- 2025$684.66 · 32 payments from 13 companies
- 2024$352.62 · 17 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $229.64 | 8 |
| Janssen Biotech, Inc. | $70.24 | 3 |
| Gilead Sciences, Inc. | $68.06 | 3 |
| Ardelyx, Inc. | $66.60 | 3 |
| Takeda Pharmaceuticals U.S.A., Inc. | $48.98 | 2 |
What the 2025 payments were for
- Food and Beverage$684.66 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Highland
- 1568412567
- 1942256581
- 1295774966