Christopher Swanson
Internal Medicine · Riverside, CANPI 1023016847
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $317,800 of the $319,269 with a category attached, or 99.5%. Takeda Pharmaceuticals U.S.A., Inc. accounts for 99.9% of it on its own, with 8 other manufacturers making up the rest. Among internal medicine clinicians in CA 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 163 payments — averaging $1958.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Takeda Pharmaceuticals U.S.A., Inc.$319K
- Pfizer$43
- Lilly USA, LLC$30
- AstraZeneca$27
- Esperion Therapeutics, Inc.$24
- Alnylam Pharmaceuticals Inc.$22
- plus $45 from 3 others
What the payments were for
- Consulting fees$317,800100%
- Travel & lodging$1,2780%
- Food & beverage$1910%
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 |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | 152 | $319,078 |
| Pfizer | 2 | $43 |
| Lilly USA, LLC | 2 | $30 |
| AstraZeneca | 2 | $27 |
| Esperion Therapeutics, Inc. | 1 | $24 |
| Alnylam Pharmaceuticals Inc. | 1 | $22 |
| Eisai Inc. | 1 | $16 |
| GSK | 1 | $15 |
| Merck | 1 | $14 |
How this compares
$319,269 in reported general payments places this provider in the 95th percentile of 13,581 internal medicine providers in California.
Other internal medicine in Riverside
- Andrew ChengSouth San Francisco$55.1M
- Tung NgoNewport Beach$4.9M
- Christian EversullStanford$2.9M
- Christian SandrockSacramento$2.1M
- Hatim HusainSan Diego$2M
- Teck LingPalo Alto$1.1M
- Hyong Kimla Jolla$1M
- Rohit Loombala Jolla$965K
- Fred CohenSan Francisco$929K
- Steven EdelmanSan Diego$863K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.