Matthew Eric Viernes, M.D.
NPI 1730158650ActiveIndividual· Internal Medicine, Gastroenterology· Oceanside, CA
Internal Medicine, Gastroenterology (M.D.) in Oceanside, California, trained at University of Wisconsin School of Medicine (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $790,663 for 702 claims, against $93,257 paid for services in 2024. Janssen Biotech, Inc. was the largest of 18 companies reporting payments in 2025, $2,393 in all, mostly food and beverage.
Overview
| NPI | 1730158650 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 14, 2006 |
| Last updated in NPPES | Feb 25, 2021 |
| Certified by provider | Feb 25, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A61516 | CA |
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 | 394 |
|---|---|
| Services billed | 832 across 25 procedure codes |
| Paid by Medicare | $93,257 |
Part D prescriptions in 2024
| Prescriptions (claims) | 702 · 1,163 30-day fills |
|---|---|
| Patients | 396 |
| Total drug cost | $790,663 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- North County Gastroenterology Medical Group IncOceanside, CA · 11 clinicians
Hospital affiliations
- Scripps Memorial Hospital - EncinitasEncinitas, CA
- Tri-City Medical CenterOceanside, CA
Industry payments (Open Payments)
- 2025$2,393 · 117 payments from 18 companies
- 2024$2,172 · 112 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $556.27 | 22 |
| Abbvie Inc. | $549.91 | 31 |
| Takeda Pharmaceuticals U.S.A., Inc. | $250.88 | 14 |
| Madrigal Pharmaceuticals | $241.15 | 13 |
| Pfizer Inc. | $204.78 | 9 |
What the 2025 payments were for
- Food and Beverage$2,393 · 117 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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