Yendung Nguyen, MD
Family Medicine · Oklahoma City, OKNPI 1154404648
Payments from drug & device makers
Across 16 payments — averaging $15.00 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Gilead$67
- AbbVie$59
- Pfizer$18
- Ironshore Pharmaceuticals Inc.$16
- Amgen$16
- Aytu Biopharma, Inc.$14
- plus $50 from 4 others
What the payments were for
- Food & beverage$240100%
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 | 4 | $67 |
| AbbVie(2 entities) | 4 | $59 |
| Pfizer | 1 | $18 |
| Ironshore Pharmaceuticals Inc. | 1 | $16 |
| Amgen | 1 | $16 |
| Aytu Biopharma, Inc. | 1 | $14 |
| Corium, LLC | 1 | $13 |
| Adlon Therapeutics L.p. | 1 | $13 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $12 |
| Amarin Pharma, Inc. | 1 | $12 |
How this compares
$240 in reported general payments places this provider in the 40th percentile of 1,730 family medicine 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 |
|---|---|---|
| MounjaroTirzepatide | 34 | $37,605 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 33 | $22,293 |
| OzempicSemaglutide | 22 | $20,499 |
| Telmisartan | 79 | $3,274 |
| Duloxetine Hcl | 76 | $2,418 |
| Atorvastatin Calcium | 118 | $1,990 |
| Novolog FlexpenInsulin Aspart | 11 | $1,513 |
| Levothyroxine Sodium | 143 | $1,486 |
| Rosuvastatin Calcium | 111 | $1,477 |
| Celecoxib | 23 | $1,435 |
| Montelukast Sodium | 65 | $1,175 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 33 | $936 |
| Nebivolol Hcl | 12 | $904 |
| Losartan Potassium | 59 | $882 |
| Metoprolol Succinate | 35 | $853 |
Paid to pharmacies, not to this prescriber.
Other family medicine in Oklahoma City
- Carl GriffinOklahoma City$28.2M
- Alexander FrankOklahoma City$3.1M
- Charles LunnOklahoma City$1.4M
- Hieu NguyenOklahoma City$238K
- Melinda CailOklahoma City$122K
- Jose Maria Borrego AcostaOklahoma City$106K
- Brett CauthenOklahoma City$77K
- Angelique BarretoOklahoma City$74K
- John PittmanOklahoma City$39K
- Terrence TruongOklahoma City$32K
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.