Omar Shahbaz, M.D., M.S.
NPI 1417226366ActiveIndividual· Internal Medicine, Gastroenterology· Corona, CA
Internal Medicine, Gastroenterology (M.D., M.S.) with United Medical Doctors, practicing in Corona, California. Their prescriptions cost Medicare Part D more than their services did: $177,049 for 1,003 claims, against $102,840 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 16 companies reporting payments in 2025, $947.80 in all, mostly food and beverage. Lists Corona Regional Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1417226366 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D., M.S. |
| Sole proprietor | Yes |
| NPI issued | Dec 21, 2011 |
| Last updated in NPPES | Jun 30, 2020 |
| Certified by provider | Jun 30, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A151553 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 420 |
|---|---|
| Services billed | 960 across 31 procedure codes |
| Paid by Medicare | $102,840 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,003 · 1,484 30-day fills |
|---|---|
| Patients | 407 |
| Total drug cost | $177,049 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- United Medical DoctorsMurrieta, CA · 173 clinicians
Hospital affiliations
- Corona Regional Medical CenterCorona, CA
- Riverside Community HospitalRiverside, CA
Industry payments (Open Payments)
- 2025$947.80 · 44 payments from 16 companies
- 2024$491.49 · 17 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $476.39 | 20 |
| Janssen Biotech, Inc. | $93.67 | 4 |
| Ardelyx, Inc. | $62.11 | 3 |
| Intercept Pharmaceuticals, Inc. | $40.58 | 2 |
| Phathom Pharmaceuticals, Inc. | $34.12 | 4 |
What the 2025 payments were for
- Food and Beverage$947.80 · 44 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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