Alyssa Vicari Gassen, MD
NPI 1790304574ActiveIndividual· Internal Medicine· Covington, LA
Internal Medicine (MD) with St Tammany Parish Hospital Service District No 1, practicing in Covington, Louisiana. In 2024 Medicare paid $54,413 for 229 patients, and Part D covered 541 of their prescriptions, 88% of them generic. Pfizer Inc. reported $33.69 in payments in 2025, mostly food and beverage. Lists St Tammany Parish Hospital as a hospital affiliation.
Overview
| NPI | 1790304574 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 13, 2020 |
| Last updated in NPPES | Aug 17, 2023 |
| Certified by provider | Aug 17, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 337683 | LA |
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 - Internal Medicine (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 229 |
|---|---|
| Services billed | 743 across 6 procedure codes |
| Paid by Medicare | $54,413 |
Part D prescriptions in 2024
| Prescriptions (claims) | 541 · 697 30-day fills |
|---|---|
| Patients | 205 |
| Total drug cost | $21,321 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- St Tammany Parish Hospital Service District No 1Covington, LA · 166 clinicians
Hospital affiliation
- St Tammany Parish HospitalCovington, LA
Industry payments (Open Payments)
- 2025$33.69 · 2 payments from 1 company
- 2024$323.85 · 15 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $33.69 | 2 |
What the 2025 payments were for
- Food and Beverage$33.69 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Covington
- 1023259090
- 1053609560
- 1083673917
- 1083956841
- 1104836790
- 1265673222
- 1275507873
- 1275513483
- 1295945434
- 1316928260
- 1356358485
- 1366419590
All 85 internal medicine physicians in Covington · All internal medicine physicians in Louisiana