Gregory Adamson, MD
Sports Medicine · Pasadena, CANPI 1972590610
Payments from drug & device makers
What this record shows
Arthrex accounts for 89.3% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2019 at $1,501 and has fallen 95.0% since, to $76 in 2025.
Across 40 payments — averaging $90.78 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$3K
- Micromed Inc$174
- Abbott$76
- Medtronic$65
- Saxum Surgical, Inc.$43
- Johnson & Johnson$32
Across 7 payments — averaging $11,834 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.
- Arthrex$83K
What the payments were for
- Travel & lodging$1,88052%
- Food & beverage$1,75148%
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 | 33 | $3,242 |
| Micromed Inc | 2 | $174 |
| Abbott | 1 | $76 |
| Medtronic | 1 | $65 |
| Saxum Surgical, Inc. | 1 | $43 |
| Johnson & Johnson | 2 | $32 |
How this compares
$3,631 in reported general payments places this provider in the 55th percentile of 662 sports medicine providers in California.
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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 34 | $291 |
Paid to pharmacies, not to this prescriber.
Other sports medicine in Pasadena
- Neal ElattracheLos Angeles$51M
- Nathaniel CohenLos Gatos$6.4M
- Thomas KnappSanta Monica$2.5M
- Michael FreehillStanford$1.6M
- Allan MishraMenlo Park$1.5M
- Heinz Hoeneckela Jolla$1.4M
- Seth ShermanStanford$1.1M
- Stephan YacoubianBurbank$1M
- Stephen Snydervan Nuys$922K
- Deryk JonesSan Carlos$915K
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.