Jason Maxfield, MD
Sleep Medicine · Joplin, MONPI 1053572966
Payments from drug & device makers
What this record shows
The money is spread across several categories — travel and lodging (54.8%), food and beverage and education — rather than concentrated in one kind of arrangement. Inspire Medical Systems, Inc. accounts for 82.9% of it on its own, with 8 other manufacturers making up the rest. Reporting peaked in 2024 at $815 and has fallen 77.0% since, to $187 in 2025.
Across 25 payments — averaging $76.67 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Inspire Medical Systems, Inc.$2K
- Harmony Biosciences LLC$119
- Resmed Corp$62
- Jazz Pharmaceuticals Inc.$58
- Fisher & Paykel Healthcare Inc$23
- Lilly USA, LLC$19
- plus $47 from 3 others
What the payments were for
- Travel & lodging$1,05055%
- Food & beverage$77240%
- Education$955%
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 |
|---|---|---|
| Inspire Medical Systems, Inc. | 13 | $1,589 |
| Harmony Biosciences LLC | 2 | $119 |
| Resmed Corp | 3 | $62 |
| Jazz Pharmaceuticals Inc. | 2 | $58 |
| Fisher & Paykel Healthcare Inc | 1 | $23 |
| Lilly USA, LLC | 1 | $19 |
| Apria Healthcare LLC | 1 | $16 |
| Eisai Inc. | 1 | $16 |
| Philips North America 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.
- Inspire$1,232
How this compares
$1,917 in reported general payments places this provider in the 65th percentile of 33 sleep medicine providers in Missouri.
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 |
|---|---|---|
| WakixPitolisant Hcl | 18 | $290,128 |
| BelsomraSuvorexant | 142 | $66,281 |
| SunosiSolriamfetol Hcl | 32 | $30,976 |
| DayvigoLemborexant | 43 | $19,355 |
| QuviviqDaridorexant Hcl | 26 | $12,956 |
| Armodafinil | 93 | $8,950 |
| Pregabalin | 197 | $5,385 |
| Pramipexole ErPramipexole Di-Hcl | 11 | $2,328 |
| Doxepin Hcl | 42 | $2,260 |
| Gabapentin | 131 | $1,204 |
| Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine | 12 | $931 |
| Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine | 23 | $823 |
| Modafinil | 34 | $707 |
| Eszopiclone | 16 | $564 |
| Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl | 13 | $518 |
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 |
|---|---|---|
| Harmony Biosciences LLCWakix | $119 | $290,12818 claims |
| Eisai Inc.Dayvigo | $16 | $19,35543 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 65th percentile of 33 sleep medicine providers in Missouri.
Other sleep medicine in Joplin
- Essam ElkadyJoplin$3K
- Steven GradneySpringfield$926K
- Raman MalhotraSaint Louis$7K
- David IngramKansas City$7K
- Joseph Roland EspirituSt. Louis$7K
- Rutwik PatelSaint Louis$4K
- David KuhlmannSedalia$3K
- Oscar SchwartzSaint Louis$3K
- Beth WardChesterfield$2K
- Scott ShortenNorth Kansas City$2K
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.