Magha Dissanayake, MD
Internal Medicine · Springfield, ORNPI 1578545182
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 99.1% of the total across 186 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 31 manufacturers, the largest accounting for just 21.9% — the pattern of someone who eats at a lot of different presentations. Among internal medicine clinicians in OR with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 186 payments — averaging $19.67 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Pfizer$803
- AstraZeneca$328
- GSK$306
- Novo Nordisk$306
- Amgen$249
- Exact Sciences$245
- plus $1K from 25 others
What the payments were for
- Food & beverage$3,62799%
- Education$321%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Pfizer | 60 | $803 |
| AstraZeneca | 11 | $328 |
| GSK | 15 | $306 |
| Novo Nordisk | 17 | $306 |
| Amgen(2 entities) | 11 | $249 |
| Exact Sciences | 12 | $245 |
| AbbVie | 7 | $175 |
| Boston Scientific | 2 | $175 |
| Novartis | 8 | $173 |
| Otsuka America Pharmaceutical, Inc. | 8 | $167 |
| Boehringer Ingelheim | 4 | $105 |
| Johnson & Johnson | 3 | $77 |
| Aimmune Therapeutics, Inc. | 3 | $66 |
| Lilly USA, LLC | 4 | $64 |
| Corcept Therapeutics | 3 | $50 |
| Daiichi Sankyo Inc. | 2 | $46 |
| Nestle Healthcare Nutrition Inc. | 2 | $44 |
| Sanofi-aventis U.S. LLC | 1 | $28 |
| Edwards Lifesciences | 1 | $26 |
| Dexcom, Inc. | 1 | $24 |
| Merck | 1 | $24 |
| Madrigal Pharmaceuticals | 1 | $23 |
| Sanofi Pasteur Inc. | 1 | $20 |
| Kyowa Kirin, Inc. | 1 | $19 |
| Baxter Healthcare | 1 | $19 |
| Axsome Therapeutics, Inc. | 1 | $18 |
| Xeris Pharmaceuticals, Inc. | 1 | $17 |
| Verity Pharmaceuticals Inc. | 1 | $17 |
| Bristol Myers Squibb | 1 | $15 |
| Kowa Pharmaceuticals America, Inc. | 1 | $15 |
| Bioventus LLC | 1 | $15 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- FARXIGA$166
- BREZTRI$166
- AIRSUPRA$166
- WATCHMAN Access System$142
How this compares
$3,659 in reported general payments places this provider in the 95th percentile of 1,363 internal medicine providers in Oregon.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| EliquisApixaban | 109 | $110,146 |
| OzempicSemaglutide | 38 | $44,650 |
| JardianceEmpagliflozin | 35 | $40,264 |
| XareltoRivaroxaban | 25 | $35,689 |
| MyrbetriqMirabegron | 19 | $21,628 |
| TrulicityDulaglutide | 18 | $17,931 |
| JanuviaSitagliptin Phosphate | 11 | $13,694 |
| Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog | 23 | $13,158 |
| Breztri AerosphereBudesonide/Glycopyr/Formoterol | 12 | $11,039 |
| SymbicortBudesonide/Formoterol Fumarate | 28 | $10,892 |
| PremarinEstrogens, Conjugated | 12 | $8,263 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 11 | $8,159 |
| Anoro ElliptaUmeclidinium Brm/Vilanterol Tr | 14 | $6,944 |
| VraylarCariprazine Hcl | 11 | $5,954 |
| Gabapentin | 255 | $5,764 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerEliquis, Premarin | $803 | $118,409121 claims |
| Boehringer IngelheimJardiance, Spiriva Respimat | $105 | $45,93746 claims |
| Novo NordiskOzempic | $306 | $44,65038 claims |
| Johnson & JohnsonXarelto | $77 | $35,68925 claims |
| AstraZenecaBreztri Aerosphere, Symbicort | $328 | $21,93140 claims |
| Lilly USA, LLCTrulicity | $64 | $17,93118 claims |
| GSKTrelegy Ellipta, Anoro Ellipta | $306 | $15,10325 claims |
| MerckJanuvia | $24 | $13,69411 claims |
| AbbVieVraylar | $175 | $5,95411 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 95th percentile of 1,363 internal medicine providers in Oregon.
Other internal medicine in Springfield
- Kathleen JacksonSpringfield$4K
- Kevin BrownSpringfield$2K
- Chad PfeferBeaverton$639K
- Pranav ChandrashekarPortland$81K
- Jonathan EdmistonBend$68K
- Jessica CastlePortland$66K
- Ellen Schiaffino PurvisGresham$66K
- Steven ShawWhite City$58K
- Stephen SpurgeonPortland$42K
- Jane BabiarzPortland$30K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.