Liam Zakko, M.D.
NPI 1932499092ActiveIndividual· Internal Medicine, Gastroenterology· Lebanon, NH
Internal Medicine, Gastroenterology (M.D.) in Lebanon, New Hampshire, trained at University of Connecticut School of Medicine (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $325,268 for 523 claims, against $73,694 paid for services in 2024. Salix Pharmaceuticals, A Division of Bausch Health US, LLC was the largest of 14 companies reporting payments in 2025, $1,295 in all, mostly food and beverage.
Overview
| NPI | 1932499092 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 11, 2011 |
| Last updated in NPPES | Jul 10, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 18766 | NH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 291 |
|---|---|
| Services billed | 1,231 across 57 procedure codes |
| Paid by Medicare | $73,694 |
Part D prescriptions in 2024
| Prescriptions (claims) | 523 · 850 30-day fills |
|---|---|
| Patients | 236 |
| Total drug cost | $325,268 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | University of Connecticut School of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Connecticut Gi PLLCWallingford, CT · 248 clinicians
Hospital affiliations
- Bristol HospitalBristol, CT
- Charlotte Hungerford HospitalTorrington, CT
- Hartford HospitalHartford, CT
- The Hospital of Central ConnecticutNew Britain, CT
- Waterbury HospitalWaterbury, CT
Industry payments (Open Payments)
- 2025$1,295 · 45 payments from 14 companies
- 2024$1,126 · 47 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $231.92 | 10 |
| Madrigal Pharmaceuticals | $196.52 | 3 |
| Abbvie Inc. | $183.53 | 11 |
| Lucid Diagnostics Inc. | $167.40 | 1 |
| Phathom Pharmaceuticals, Inc. | $115.52 | 5 |
What the 2025 payments were for
- Food and Beverage$1,295 · 45 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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