Ari Walter, MD
Sleep Medicine · Boulder, CONPI 1922669431
Payments from drug & device makers
What this record shows
The money is spread across several categories — travel and lodging (48.6%), food and beverage and education — rather than concentrated in one kind of arrangement. Inspire Medical Systems, Inc. accounts for 68.3% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2023 at $1,155 and has fallen 91.3% since, to $100 in 2025.
Across 15 payments — averaging $99.02 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Inspire Medical Systems, Inc.$1K
- Jazz Pharmaceuticals Inc.$140
- Avadel CNS Pharmaceuticals, LLC$112
- Harmony Biosciences LLC$100
- Novo Nordisk$62
- EMD Serono, Inc.$23
- plus $34 from 2 others
What the payments were for
- Travel & lodging$72149%
- Food & beverage$66445%
- Education$1007%
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. | 8 | $1,015 |
| Jazz Pharmaceuticals Inc. | 1 | $140 |
| Avadel CNS Pharmaceuticals, LLC | 1 | $112 |
| Harmony Biosciences LLC | 1 | $100 |
| Novo Nordisk | 1 | $62 |
| EMD Serono, Inc. | 1 | $23 |
| Regeneron Healthcare Solutions, Inc. | 1 | $18 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 1 | $16 |
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
$1,485 in reported general payments places this provider in the 70th percentile of 35 sleep medicine providers in Colorado.
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 |
|---|---|---|
| Zolpidem Tartrate | 19 | $195 |
| Gabapentin | 25 | $128 |
Paid to pharmacies, not to this prescriber.
Other sleep medicine in Boulder
- Anthony BarberBoulder$8K
- Stefan ChimoskeyBoulder$953
- John MoriBoulder$870
- David McCartyBoulder$221
- Stephen DuntleyAurora$17K
- Sheila TsaiDenver$7K
- George JuetersonkeColorado Springs$7K
- Keith SwartzDenver$5K
- Katherine GreenAurora$4K
- Robert BallardLittleton$3K
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.