Liana Vesga, MD
NPI 1225058159ActiveIndividual· Internal Medicine, Gastroenterology· Oakland, CA
Internal Medicine, Gastroenterology (MD) in Oakland, California, trained at Perelman School of Med at the University of Pennsylvania (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $288,542 for 664 claims, against $95,795 paid for services in 2024. Abbvie Inc. was the largest of 17 companies reporting payments in 2025, $3,069 in all, mostly food and beverage.
Overview
| NPI | 1225058159 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 21, 2006 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Nov 20, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A81977 | 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 | 425 |
|---|---|
| Services billed | 684 across 32 procedure codes |
| Paid by Medicare | $95,795 |
Part D prescriptions in 2024
| Prescriptions (claims) | 664 · 923 30-day fills |
|---|---|
| Patients | 346 |
| Total drug cost | $288,542 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Perelman School of Med at the University of Pennsylvania |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Alameda Health SystemOakland, CA · 601 clinicians
- East Bay Center for Digestive Health Medical Associates IncOakland, CA · 11 clinicians
Hospital affiliations
- Alta Bates Summit Medical CenterOakland, CA
- Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CA
- Highland HospitalOakland, CA
Industry payments (Open Payments)
- 2025$3,069 · 120 payments from 17 companies
- 2024$2,202 · 87 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $797.54 | 32 |
| Janssen Biotech, Inc. | $521.14 | 16 |
| Takeda Pharmaceuticals U.S.A., Inc. | $428.86 | 20 |
| Lilly USA, LLC | $405.10 | 14 |
| Ardelyx, Inc. | $179.58 | 6 |
What the 2025 payments were for
- Food and Beverage$3,069 · 120 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 gastroenterologists in Oakland · All gastroenterologists in California