Mykhanh Nguyen, MD
Radiation Oncology · Tulsa, OKNPI 1508820606
Payments from drug & device makers
What this record shows
The money is spread across several categories — travel and lodging (51.8%), food and beverage and speaking fees — rather than concentrated in one kind of arrangement. Elekta, Inc. accounts for 72.1% of it on its own, with 22 other manufacturers making up the rest. Among radiation oncology clinicians in OK 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 115 payments — averaging $128.60 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Elekta, Inc.$11K
- Accuray Incorporated$2K
- Siemens Medical Solutions USA, Inc.$1K
- Novartis$230
- Intuitive Surgical$130
- Daiichi Sankyo Inc.$110
- plus $614 from 17 others
What the payments were for
- Speaking & faculty fees$3,00020%
- Travel & lodging$7,66652%
- Food & beverage$4,08528%
- Entertainment$380%
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 |
|---|---|---|
| Elekta, Inc. | 48 | $10,659 |
| Accuray Incorporated | 12 | $2,027 |
| Siemens Medical Solutions USA, Inc. | 8 | $1,019 |
| Novartis | 11 | $230 |
| Intuitive Surgical | 1 | $130 |
| Daiichi Sankyo Inc. | 6 | $110 |
| AstraZeneca | 5 | $95 |
| Boston Scientific | 2 | $73 |
| Regeneron Healthcare Solutions, Inc. | 3 | $60 |
| AVEO Pharmaceuticals, Inc. | 2 | $53 |
| Bayer | 2 | $44 |
| Bristol Myers Squibb | 3 | $42 |
| Seagen Inc. | 2 | $42 |
| Icotec Medical Inc. | 1 | $28 |
| Sanofi | 1 | $26 |
| Incyte Corporation | 1 | $21 |
| Beone Medicines USA, Inc. | 1 | $21 |
| Johnson & Johnson | 1 | $21 |
| EMD Serono, Inc. | 1 | $20 |
| Agios Pharmaceuticals, Inc. | 1 | $19 |
| Merck | 1 | $17 |
| E.r. Squibb & Sons, L.L.C. | 1 | $16 |
| Lilly USA, 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.
How this compares
$14,789 in reported general payments places this provider in the 95th percentile of 43 radiation oncology 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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 37 | $806 |
| Dexamethasone | 21 | $521 |
| Lidocaine Hcl ViscousLidocaine Hcl | 13 | $480 |
| Tamsulosin Hcl | 14 | $365 |
| Levothyroxine Sodium | 23 | $341 |
| Oxycodone Hcl | 15 | $209 |
| Silver Sulfadiazine | 14 | $194 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 18 | $186 |
| Lorazepam | 12 | $19 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Tulsa
- Diane HeatonTulsa$36K
- Nathan UyTulsa$5K
- Charles StewartTulsa$3K
- Terry StylesTulsa$642
- Frederick WillisonTulsa$414
- Stephen SackTulsa$373
- Ralph JensenTulsa$67
- William GoadTulsa$48
- Jerry JaboinOklahoma City$14K
- Walter WattsMuskogee$10K
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.