Michael Larsen, MD
Surgery of the Hand · Phoenix, AZNPI 1891040440
Payments from drug & device makers
What this record shows
This record is dominated by education: $1,200 of the $1,874 with a category attached, or 64.0%. Impactortho, Inc. accounts for 66.7% of it on its own, with 9 other manufacturers making up the rest. Reporting peaked in 2021 at $1,380 and has fallen 97.1% since, to $40 in 2025.
Across 12 payments — averaging $156.19 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Impactortho, Inc.$1K
- Acumed LLC$149
- Axogen$105
- Checkpoint Surgical, Inc$101
- Integra Lifesciences Corporation$99
- Medartis Inc.$98
- plus $72 from 4 others
What the payments were for
- Food & beverage$67436%
- Education$1,20064%
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 |
|---|---|---|
| Impactortho, Inc. | 3 | $1,250 |
| Acumed LLC | 1 | $149 |
| Axogen | 1 | $105 |
| Checkpoint Surgical, Inc | 1 | $101 |
| Integra Lifesciences Corporation | 1 | $99 |
| Medartis Inc. | 1 | $98 |
| Sonex Health, Inc. | 1 | $28 |
| DJO, LLC | 1 | $23 |
| Stryker | 1 | $17 |
| Orthofix Medical, Inc. | 1 | $4 |
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
Too few surgery of the hand providers in Arizonato place this figure against a meaningful peer group, so we don't.
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 |
|---|---|---|
| Gabapentin | 21 | $228 |
| Cephalexin | 11 | $83 |
| Ibuprofen | 12 | $62 |
Paid to pharmacies, not to this prescriber.
Other surgery of the hand in Phoenix
- Lloyd ChampagnePhoenix$76K
- Jozef ZoldosPhoenix$37K
- Jonathan YangPhoenix$5K
- Allen LiuPhoenix$3K
- Robert ReitzPhoenix$3K
- Brent SchultzPhoenix$2K
- Sebastian RuggeriPhoenix$999
- Joshua MirrerPhoenix$856
- Steven BastianPhoenix$723
- Benjamin WeiPhoenix$403
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.