Gregory Knoll, MD
Orthopaedic Surgery · Cary, NCNPI 1477849446
Payments from drug & device makers
What this record shows
This record is dominated by education: $1,592 of the $2,318 with a category attached, or 68.7%. Medwest Associates accounts for 69.8% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2021 at $1,263 and has fallen 96.5% since, to $44 in 2025. That places this record below the midpoint for orthopaedic surgery clinicians in NC, where the typical reported total is $4,547.
Across 23 payments — averaging $100.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medwest Associates$2K
- Mentor Worldwide LLC$543
- Tricoast Surgical Solutions LLC$35
- Johnson & Johnson$34
- Baxter Healthcare$28
- Bioventus LLC$26
- plus $34 from 2 others
What the payments were for
- Food & beverage$72631%
- Education$1,59269%
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 |
|---|---|---|
| Medwest Associates | 3 | $1,618 |
| Mentor Worldwide LLC | 13 | $543 |
| Tricoast Surgical Solutions LLC | 1 | $35 |
| Johnson & Johnson | 2 | $34 |
| Baxter Healthcare | 1 | $28 |
| Bioventus LLC | 1 | $26 |
| AbbVie | 1 | $18 |
| Integra Lifesciences Corporation | 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
$2,318 in reported general payments places this provider in the 35th percentile of 845 orthopaedic surgery providers in North Carolina.
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.
Other orthopaedic surgery in Cary
- Thomas FehringCharlotte$18.3M
- Walter BeaverCharlotte$7.4M
- Robert AndersonCharlotte$6.6M
- William JiranekDurham$6.4M
- John MasonCharlotte$5.7M
- Thomas VailDurham$5.7M
- William DavisCharlotte$5.2M
- John EllingtonCharlotte$4.9M
- Mark EasleyDurham$4M
- Carroll JonesCharlotte$3.6M
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.