Nathaniel Ratnasamy, MD
Infectious Disease · Findlay, OHNPI 1558363317
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $252,682 of the $254,655 with a category attached, or 99.2%. Takeda Pharmaceuticals U.S.A., Inc. accounts for 85.0% of it on its own, with 14 other manufacturers making up the rest. Among infectious disease clinicians in OH 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 178 payments — averaging $1430.65 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Takeda Pharmaceuticals U.S.A., Inc.$216K
- Shire North American Group Inc$36K
- Gilead$425
- Viiv Healthcare Company$378
- AbbVie$216
- AstraZeneca$173
- plus $598 from 9 others
What the payments were for
- Consulting fees$252,68299%
- Travel & lodging$1830%
- Food & beverage$1,6911%
- Education$990%
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 |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | 71 | $216,465 |
| Shire North American Group Inc | 12 | $36,400 |
| Gilead | 30 | $425 |
| Viiv Healthcare Company | 32 | $378 |
| AbbVie | 13 | $216 |
| AstraZeneca(2 entities) | 2 | $173 |
| Insmed, Inc. | 3 | $139 |
| Dexcom, Inc. | 1 | $95 |
| Merck | 5 | $92 |
| E.r. Squibb & Sons, L.L.C. | 2 | $81 |
| Aimmune Therapeutics, Inc. | 3 | $50 |
| Boehringer Ingelheim | 1 | $49 |
| Johnson & Johnson | 1 | $40 |
| Regeneron Healthcare Solutions, Inc. | 1 | $38 |
| Pfizer | 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.
How this compares
$254,655 in reported general payments places this provider in the 95th percentile of 308 infectious disease providers in Ohio.
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 |
|---|---|---|
| GenvoyaElviteg/Cob/Emtri/Tenof Alafen | 56 | $306,365 |
| DovatoDolutegravir Sodium/Lamivudine | 54 | $166,197 |
| TriumeqAbacavir/Dolutegravir/Lamivudi | 36 | $132,564 |
| DescovyEmtricitabine/Tenofov Alafenam | 56 | $130,393 |
| IsentressRaltegravir Potassium | 46 | $94,952 |
| BiktarvyBictegrav/Emtricit/Tenofov Ala | 21 | $88,943 |
| TivicayDolutegravir Sodium | 25 | $57,720 |
| PrezcobixDarunavir/Cobicistat | 11 | $26,471 |
| Etravirine | 23 | $25,066 |
| Darunavir | 27 | $20,837 |
| Atovaquone | 11 | $10,349 |
| Lamivudine | 25 | $5,140 |
| Vancomycin Hcl | 33 | $4,834 |
| Ritonavir | 44 | $4,515 |
| Doxycycline Hyclate | 77 | $2,286 |
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 |
|---|---|---|
| GileadGenvoya, Descovy, Biktarvy | $425 | $525,701133 claims |
| Viiv Healthcare CompanyDovato, Triumeq, Tivicay | $378 | $356,481115 claims |
| MerckIsentress | $92 | $94,95246 claims |
| Johnson & JohnsonPrezcobix | $40 | $26,47111 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 308 infectious disease providers in Ohio.
Other infectious disease in Findlay
- Steven BurdetteDayton$322K
- Melissa JenkinsCleveland$127K
- Grace McComseyCleveland$123K
- Steven GordonCleveland$78K
- Nicholas CongerWright Patterson Afb$76K
- Alan TaegeCleveland$76K
- Carlos MalvestuttoColumbus$70K
- Thomas FileAkron$68K
- Nelson NicolasoraToledo$65K
- Benigno RodriguezCleveland$58K
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.