Glen Erik Tonnessen, MD
NPI 1154387389ActiveIndividual· Internal Medicine, Cardiovascular Disease· Flemington, NJ
Internal Medicine, Cardiovascular Disease (MD) with Hunterdon Medical Center and 1 other group, practicing in Flemington, New Jersey. In 2024 Medicare paid $410,431 for 541 patients, and Part D covered 2,353 of their prescriptions, 89% of them generic. Boston Scientific Corporation was the largest of 11 companies reporting payments in 2025, $854.91 in all, mostly food and beverage. Lists Hunterdon Medical Center as a hospital affiliation.
Overview
| NPI | 1154387389 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 25, 2006 |
| Last updated in NPPES | Mar 27, 2025 |
| Certified by provider | Mar 27, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | MA055129 | NJ |
| Phlebology | 202K00000X | 25MA05512900 | NJ |
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 - Cardiovascular Disease (Cardiology) (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 541 |
|---|---|
| Services billed | 2,303 across 31 procedure codes |
| Paid by Medicare | $410,431 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,353 · 6,398 30-day fills |
|---|---|
| Patients | 258 |
| Total drug cost | $332,485 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Hunterdon Medical CenterFlemington, NJ · 70 clinicians
- Hunterdon Cardiovascular AssociatesFlemington, NJ · 17 clinicians
Hospital affiliation
- Hunterdon Medical CenterFlemington, NJ
Industry payments (Open Payments)
- 2025$854.91 · 33 payments from 11 companies
- 2024$1,514 · 78 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $244.96 | 5 |
| Infobionic, Inc | $133.80 | 1 |
| Amgen Inc. | $130.87 | 8 |
| Pfizer Inc. | $102.21 | 6 |
| E.R. Squibb & Sons, L.L.C. | $66.46 | 4 |
What the 2025 payments were for
- Food and Beverage$854.91 · 33 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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