David H. Panossian, MD
NPI 1366504532ActiveIndividual· Internal Medicine, Sleep Medicine· Klamath Falls, OR
Internal Medicine, Sleep Medicine (MD) in Klamath Falls, Oregon, trained at Loma Linda University School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $1,834,274 for 1,983 claims, against $155,559 paid for services in 2024. Sanofi-Aventis U.S. LLC was the largest of 3 companies reporting payments in 2025, $245.32 in all, mostly education.
Overview
| NPI | 1366504532 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 14, 2006 |
| Last updated in NPPES | Jun 24, 2025 |
| Certified by provider | Jun 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Sleep Medicine Primary | 207RS0012X | MD19424 | OR |
| Internal Medicine, Critical Care Medicine | 207RC0200X | MD19424 | OR |
| Internal Medicine, Pulmonary Disease | 207RP1001X | MD19424 | OR |
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 - Critical Care (Intensivists) (CA); Practitioner - Internal Medicine (ID); Practitioner - Critical Care (Intensivists) (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 800 |
|---|---|
| Services billed | 2,218 across 52 procedure codes |
| Paid by Medicare | $155,559 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,983 · 3,143 30-day fills |
|---|---|
| Patients | 323 |
| Total drug cost | $1,834,274 |
| Generic share | 49% of claims |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pulmonary Disease, Sleep Medicine |
Medical group
- David H Panossian MD PCKlamath Falls, OR · 2 clinicians
Hospital affiliations
- Asante Rogue Regional Medical CenterMedford, OR
- Modoc Medical CenterAlturas, CA
- Sky Lakes Medical CenterKlamath Falls, OR
Industry payments (Open Payments)
- 2025$245.32 · 6 payments from 3 companies
- 2024$134.22 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi-Aventis U.S. LLC | $171.98 | 2 |
| Glaxosmithkline, LLC. | $53.57 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $19.77 | 1 |
What the 2025 payments were for
- Education$171.98 · 2 payments
- Food and Beverage$73.34 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records