John Masonis, MD
Orthopaedic Surgery · Charlotte, NCNPI 1730162090
Payments from drug & device makers
What this record shows
This record is dominated by royalties or licence payments: $2,807,737 of the $3,418,299 with a category attached, or 82.1%. 16 manufacturers reported payments, led by Zimmer Biomet at 55.0% of the total. Reporting peaked in 2023 at $1,230,257 and has fallen 73.6% since, to $324,441 in 2025. Among orthopaedic surgery clinicians in NC 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.
Across 416 payments — averaging $8217.07 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Zimmer Biomet$1.9M
- Medacta USA, Inc.$773K
- Smith+Nephew$762K
- Bioventus LLC$2K
- Intellijoint Surgical Inc.$168
- Bone Support Inc.$162
- plus $837 from 10 others
Across 91 payments — averaging $1619.95 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.
- Smith+Nephew$78K
- Zimmer Biomet$51K
- Corin USA$9K
- Omnilife Science, Inc$9K
Across 1 payment — averaging $300,230 each. An ownership or investment interest held by the physician or an immediate family member.
- Restor3d, Inc.$300K
What the payments were for
- Royalty or licence$2,807,73782%
- Consulting fees$306,4159%
- Speaking & faculty fees$20,4001%
- Travel & lodging$27,8661%
- Food & beverage$6,2290%
- Education$8,8750%
- Other$240,7777%
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 |
|---|---|---|
| Zimmer Biomet | 123 | $1,880,289 |
| Medacta USA, Inc. | 197 | $772,992 |
| Smith+Nephew | 81 | $762,241 |
| Bioventus LLC | 3 | $1,610 |
| Intellijoint Surgical Inc. | 1 | $168 |
| Bone Support Inc. | 1 | $162 |
| Medtronic | 1 | $146 |
| Next Science LLC | 1 | $132 |
| Peerless Surgical Inc. | 1 | $125 |
| Heron Therapeutics, Inc. | 1 | $124 |
| Orthogrid Systems Inc | 1 | $94 |
| Restor3d, Inc. | 1 | $76 |
| Think Surgical, Inc. | 1 | $62 |
| Carbofix Orthopedics Inc | 1 | $43 |
| Vertex | 1 | $22 |
| Abbott | 1 | $13 |
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.
- Persona$1,287,855
- Journey II$451,486
- QUADRA$325,473
- REDAPT$318,460
- GMK SPHERE$151,020
- Quadra C Femoral Stems$132,530
- Persona Partial Knee System$82,526
- M-VIZION$80,097
- Legion$74,118
- REDAPT Revision Hip System$70,710
- Persona Revision$68,664
- AMISTEM$19,339
- AMIStem H Femoral Stems$13,405
- Avenir$10,658
- M-Vizion Femoral Revision System$9,221
- G7$8,986
- Arcos$8,875
- JII Unicondylar Knee System$6,261
- GMK REVISION$4,500
- GMK Sphere Revision System$4,500
How this compares
$3,418,299 in reported general payments places this provider in the 95th 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Celecoxib | 11 | $143 |
| Cephalexin | 12 | $80 |
| Amoxicillin | 38 | $56 |
| Meloxicam | 41 | $45 |
| Clindamycin Hcl | 18 | $18 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Charlotte
- Thomas FehringCharlotte$18.3M
- Walter BeaverCharlotte$7.4M
- Robert AndersonCharlotte$6.6M
- John MasonCharlotte$5.7M
- William DavisCharlotte$5.2M
- John EllingtonCharlotte$4.9M
- Carroll JonesCharlotte$3.6M
- Bruce CohenCharlotte$2.4M
- Anthony KwonCharlotte$1.9M
- William GriffinCharlotte$1.8M
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.