Brian Christiansen, DPM
Foot Surgery · Oak Ridge, TNNPI 1922095454
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $1,080 of the $1,595 with a category attached, or 67.7%. 13 manufacturers reported payments, led by Smith+Nephew at 43.9% of the total. Reporting peaked in 2019 at $669 and has fallen 80.1% since, to $133 in 2025.
Across 61 payments — averaging $26.15 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Smith+Nephew$700
- Stryker$550
- Averitas Pharma Inc.$79
- Amgen$58
- Convatec Inc.$52
- Organogenesis Inc.$31
- plus $125 from 7 others
What the payments were for
- Travel & lodging$51632%
- Food & beverage$1,08068%
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 |
|---|---|---|
| Smith+Nephew | 34 | $700 |
| Stryker | 6 | $550 |
| Averitas Pharma Inc. | 4 | $79 |
| Amgen | 3 | $58 |
| Convatec Inc. | 3 | $52 |
| Organogenesis Inc. | 2 | $31 |
| Medtronic | 2 | $30 |
| Zyla Life Sciences, Inc. | 2 | $25 |
| KCI USA, Inc. | 1 | $17 |
| Kowa Pharmaceuticals America, Inc. | 1 | $15 |
| Paratek Pharmaceuticals, Inc. | 1 | $13 |
| Medartis Inc. | 1 | $13 |
| AbbVie | 1 | $12 |
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.
- PROstep$407
How this compares
$1,595 in reported general payments places this provider in the 60th percentile of 23 foot surgery providers in Tennessee.
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 |
|---|---|---|
| Doxycycline Hyclate | 127 | $1,356 |
| Cephalexin | 34 | $594 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 27 | $191 |
| Methylprednisolone | 18 | $152 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 18 | $107 |
Paid to pharmacies, not to this prescriber.
Other foot surgery in Oak Ridge
- James EngblomOak Ridge$2K
- Christopher JuelsCookeville$208K
- Joseph CreazzoMorristown$12K
- David VelardeKnoxville$11K
- David FranklinAlcoa$8K
- Carol AkermanKnoxville$6K
- Mark WrightMurfreesboro$5K
- David MoinesterMemphis$2K
- Brian ShwerMemphis$2K
- Ignis RetiefNashville$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.