John Duffy
Psychiatry · Santa Ana, CANPI 1255497251
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $2,100 of the $2,381 with a category attached, or 88.2%. Eli Lilly accounts for 88.2% of it on its own, with 3 other manufacturers making up the rest. Reporting peaked in 2024 at $2,225 and has fallen 96.4% since, to $80 in 2025.
Across 5 payments — averaging $476.20 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Eli Lilly$2K
- Novo Nordisk$125
- F. Hoffmann-la Roche AG$80
- Genentech, Inc.$76
Across 652 payments — averaging $18,458 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.
- Eli Lilly$5.1M
- Biogen$2.1M
- Eisai Inc.$1.1M
- AbbVie$757K
- UCB SA$643K
- Genentech, Inc.$464K
- plus $1.8M from 11 others
What the payments were for
- Consulting fees$2,10088%
- Food & beverage$2059%
- Education$763%
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 |
|---|---|---|
| Eli Lilly | 1 | $2,100 |
| Novo Nordisk | 1 | $125 |
| F. Hoffmann-la Roche AG | 1 | $80 |
| Genentech, Inc. | 2 | $76 |
How this compares
$2,381 in reported general payments places this provider in the 85th percentile of 4,954 psychiatry providers in California.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Memantine Hcl ErMemantine Hcl | 11 | $378 |
| Divalproex Sodium ErDivalproex Sodium | 18 | $377 |
| Quetiapine Fumarate | 12 | $178 |
| Bupropion XlBupropion Hcl | 19 | $165 |
| Escitalopram Oxalate | 12 | $104 |
Paid to pharmacies, not to this prescriber.
Other psychiatry in Santa Ana
- Gustavo AlvaOrange$5.8M
- John KooSan Francisco$3M
- Jason KelloggIrvine$2.7M
- Jonathan MeyerSan Diego$2.3M
- Charles Tuan-Tu NguyenIrvine$2.1M
- Manoj WaikarLos Gatos$1.9M
- Gerald MaguireSan Juan Capistraco$1.8M
- Salima BrillmanSunnyvale$1.4M
- Bibi DasStanford$1.4M
- Konstantinos TripodisBurbank$1M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.