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Barton Knox, MD

Otolaryngology · Colorado Springs, CONPI 1285633909

Payments from drug & device makers

What this record shows

This record is dominated by consulting fees: $152,950 of the $163,746 with a category attached, or 93.4%. Stryker accounts for 98.5% of it on its own, with 16 other manufacturers making up the rest. Reporting peaked in 2019 at $56,361 and has fallen 99.2% since, to $436 in 2025. Among otolaryngology clinicians in CO 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.

$163,746in general payments, 2019–2025

Across 225 payments — averaging $727.76 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

  • Stryker$161K
  • Aerin Medical Inc.$1K
  • AstraZeneca$350
  • Sanofi$279
  • Regeneron Healthcare Solutions, Inc.$128
  • GSK$110
  • plus $394 from 11 others
$34,335in research payments, 2019–2025

Across 3 payments — averaging $11,445 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.

  • Aerin Medical Inc.$34K

What the payments were for

  • Consulting fees$152,95093%
  • Travel & lodging$5,5333%
  • Food & beverage$5,2643%

General payments by program year

19
20
21
22
23
24
25

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.

CompanyPaymentsTotal
Stryker153$161,333
Aerin Medical Inc.13$1,153
AstraZeneca16$350
Sanofi13$279
Regeneron Healthcare Solutions, Inc.6$128
GSK6$110
Optinose US, Inc.5$87
Takeda Pharmaceuticals U.S.A., Inc.3$68
Neurent Medical Limited2$56
Inspire Medical Systems, Inc.1$55
Intersect ENT, Inc.1$24
Livanova USA, Inc.1$22
Innovation Technologies Inc1$20
Octapharma USA, Inc.1$18
Shire North American Group Inc1$18
Coherus Oncology, Inc.1$14
Hologic Sales And Service, LLC1$14

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

$163,746 in reported general payments places this provider in the 95th percentile of 174 otolaryngology providers in Colorado.

See all otolaryngology providers in Colorado →

Medicare billing

Part B allowed, 2024
$226,394
Medicare patients
446
Services billed
1,398

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

DrugClaimsCost to plans & patients
Ipratropium Bromide73$1,997
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav88$935
Cefdinir27$593
Gabapentin37$380
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen34$157
Prednisone47$126
Mupirocin13$109
Levofloxacin15$60

Paid to pharmacies, not to this prescriber.

Other otolaryngology in Colorado Springs

See the full list for Colorado →

Where these figures come from

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