David Chansolme, MD
Infectious Disease · Oklahoma City, OKNPI 1457343402
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 97.4% of the total across 115 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 15 manufacturers reported payments, led by Gilead at 27.6% of the total. 2025 is the largest year on record at $667, 2.9 times the $233 reported in 2019.
Across 115 payments — averaging $20.11 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Gilead$638
- Viiv Healthcare Company$568
- Insmed, Inc.$351
- Shionogi Inc$156
- Merck$115
- La Jolla Pharmaceutical Company$96
- plus $389 from 9 others
What the payments were for
- Food & beverage$2,25397%
- Education$603%
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 |
|---|---|---|
| Gilead | 30 | $638 |
| Viiv Healthcare Company | 29 | $568 |
| Insmed, Inc. | 20 | $351 |
| Shionogi Inc | 6 | $156 |
| Merck | 6 | $115 |
| La Jolla Pharmaceutical Company | 5 | $96 |
| Paratek Pharmaceuticals, Inc. | 5 | $80 |
| Janssen Products, LP | 1 | $60 |
| Melinta Therapeutics, LLC | 4 | $56 |
| AbbVie | 2 | $52 |
| Cormedix Inc. | 2 | $44 |
| Ferring Pharmaceuticals Inc. | 2 | $43 |
| Mycovia Pharmaceuticals, Inc. | 1 | $24 |
| Johnson & Johnson | 1 | $16 |
| Aimmune Therapeutics, Inc. | 1 | $14 |
How this compares
$2,313 in reported general payments places this provider in the 75th percentile of 51 infectious disease providers in Oklahoma.
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 |
|---|---|---|
| BiktarvyBictegrav/Emtricit/Tenofov Ala | 251 | $1,002,149 |
| TriumeqAbacavir/Dolutegravir/Lamivudi | 89 | $345,108 |
| Daptomycin | 412 | $205,248 |
| TivicayDolutegravir Sodium | 41 | $109,150 |
| DescovyEmtricitabine/Tenofov Alafenam | 36 | $91,076 |
| IsentressRaltegravir Potassium | 39 | $75,351 |
| GenvoyaElviteg/Cob/Emtri/Tenof Alafen | 12 | $47,520 |
| ErtapenemErtapenem Sodium | 116 | $41,520 |
| CompleraEmtricita/Rilpivirine/Tenof Df | 12 | $41,499 |
| Efavirenz-Emtric-Tenofov DisopEfavirenz/Emtricit/Tenofovr Df | 24 | $40,793 |
| Vancomycin Hcl | 220 | $37,244 |
| Darunavir | 43 | $28,429 |
| Efavirenz | 29 | $20,459 |
| Piperacillin-TazobactamPiperacillin Sodium/Tazobactam | 78 | $14,754 |
| Cefazolin Sodium | 148 | $13,300 |
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 |
|---|---|---|
| GileadBiktarvy, Descovy, Genvoya | $638 | $1,140,746299 claims |
| Viiv Healthcare CompanyTriumeq, Tivicay | $568 | $454,258130 claims |
| MerckIsentress | $115 | $75,35139 claims |
| Johnson & JohnsonComplera | $16 | $41,49912 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 75th percentile of 51 infectious disease providers in Oklahoma.
Other infectious disease in Oklahoma City
- Ahmad AshfaqOklahoma City$22K
- Erin McBrideOklahoma City$6K
- Amaury DiazOklahoma City$5K
- Bushra SiddiqueOklahoma City$3K
- Andrea ScottOklahoma City$3K
- Janki AminOklahoma City$3K
- Miranda McGheeOklahoma City$2K
- Cade ParkeOklahoma City$1K
- John HarkessOklahoma City$1K
- Maria AlkozahOklahoma City$829
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.