Joseph Kahan, MD
Orthopaedic Surgery · South Portland, MENPI 1336678093
Payments from drug & device makers
What this record shows
The money is spread across several categories — grants (39.3%), education and food and beverage — rather than concentrated in one kind of arrangement. 16 manufacturers reported payments, led by Arthrex at 42.8% of the total. Reporting peaked in 2022 at $35,961 and has fallen 92.8% since, to $2,588 in 2025. Among orthopaedic surgery clinicians in ME with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 136 payments — averaging $373.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$22K
- Smith+Nephew$13K
- Peerless Surgical Inc.$7K
- Lima USA, Inc.$2K
- Exactech, Inc.$2K
- Stryker$1K
- plus $4K from 10 others
What the payments were for
- Grants$20,00039%
- Travel & lodging$5,89012%
- Food & beverage$7,27014%
- Education$17,66735%
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 |
|---|---|---|
| Arthrex | 25 | $21,773 |
| Smith+Nephew | 11 | $12,507 |
| Peerless Surgical Inc. | 21 | $6,855 |
| Lima USA, Inc. | 7 | $2,155 |
| Exactech, Inc. | 10 | $2,104 |
| Stryker | 20 | $1,410 |
| Zimmer Biomet | 7 | $1,179 |
| Integrity Orthopaedics, Inc. | 13 | $989 |
| Kairos Surgical Inc | 10 | $896 |
| Johnson & Johnson | 5 | $545 |
| Acumed LLC | 2 | $157 |
| Medacta USA, Inc. | 1 | $97 |
| Vericel Corporation | 1 | $81 |
| Anika Therapeutics, Inc. | 1 | $34 |
| Endo USA, Inc. | 1 | $23 |
| Vertex | 1 | $21 |
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.
- EQUINOXE$1,938
- SMR Shoulder$1,692
- Avenir$1,037
- BLUEPRINT PATIENT SPECIFIC INSTRUMENTATION$725
- Integrity Orthopaedics$469
- Product Portfolio$404
- Q-FIX$361
- MAKO$259
- SPATIAL FRAME$214
- ACUMED$208
- Coblation$147
- Bioinductive Implant with Arthroscopic Delivery System - Medium$147
- VAPR$146
- FMS$146
- HEALIX KNOTLESS PEEK$146
- DYNACORD$145
- Versalok Orthocord$145
- EXACTECHGPS$139
- AEQUALIS PERFORM$135
- INTEllIO LINK WEREWOLF$120
How this compares
$50,827 in reported general payments places this provider in the 90th percentile of 111 orthopaedic surgery providers in Maine.
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 |
|---|---|---|
| Meloxicam | 13 | $9 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in South Portland
- Joshua VaughnSouth Portland$37K
- Jonathan WatlingSouth Portland$6K
- Ross FellerSouth Portland$3K
- George BabikianFalmouth$446K
- Nicholas ColacchioFalmouth$439K
- Adam RanaFalmouth$330K
- John HerzogFalmouth$258K
- Matthew CamusoPortland$120K
- Ian DickeyFarmington$75K
- Daniel ShubertAugusta$64K
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.