Brian Koffman
Family Medicine · Diamond Bar, CANPI 1326049164
Payments from drug & device makers
Across 63 payments — averaging $1498.96 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$36K
- Eli Lilly$17K
- Bristol Myers Squibb$12K
- Verastem, Inc.$6K
- Lilly USA, LLC$5K
- AstraZeneca$4K
- plus $14K from 10 others
Across 4 payments — averaging $806.45 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.
- F. Hoffmann-la Roche AG$3K
What the payments were for
- Consulting fees$57,47261%
- Speaking & faculty fees$5,1785%
- Travel & lodging$31,05233%
- Food & beverage$7321%
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 |
|---|---|---|
| AbbVie | 20 | $35,986 |
| Eli Lilly | 4 | $17,188 |
| Bristol Myers Squibb | 4 | $12,227 |
| Verastem, Inc. | 2 | $6,144 |
| Lilly USA, LLC | 7 | $4,825 |
| AstraZeneca | 12 | $4,373 |
| Janssen Scientific Affairs, LLC | 2 | $4,340 |
| Janssen Research & Development, LLC | 2 | $3,245 |
| Novartis Pharma AG | 1 | $2,920 |
| Idorsia Pharmaceuticals US Inc | 1 | $1,103 |
| Johnson & Johnson | 1 | $1,095 |
| Adaptive Biotechnologies Corporation | 2 | $766 |
| Amgen | 1 | $107 |
| Janssen Global Services, LLC | 2 | $84 |
| Sanofi Pasteur Inc. | 1 | $20 |
| Pfizer | 1 | $11 |
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
$94,434 in reported general payments places this provider in the 95th percentile of 10,533 family medicine providers in California.
Other family medicine in Diamond Bar
- Amina HaggagNorthridge$112.8M
- Steven ReynoldsLong Beach$53M
- Rizwana MohseniLake Forest$26.7M
- Daniel JohnsonSan Diego$15.7M
- Stacey LayleSan Diego$14.8M
- Apinya VutikullirdCypress$14.3M
- Hanid AudishSpring Valley$13.6M
- Augusto FocilOxnard$12.6M
- Jack VuLong Beach$10.1M
- Suzanne FussellOxnard$8.9M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.