Gagan Mathur, MD
Blood Banking & Transfusion Medicine · Orange, CANPI 1386999175
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $7,292 of the $11,998 with a category attached, or 60.8%. Pharmacosmos Therapeutics Inc. accounts for 84.4% of it on its own, with 11 other manufacturers making up the rest. Reporting peaked in 2022 at $10,376 and has fallen 97.3% since, to $282 in 2025. Among blood banking & transfusion 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 31 payments — averaging $387.04 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Pharmacosmos Therapeutics Inc.$10K
- Hemosonics LLC$734
- Sanofi$219
- Bristol Myers Squibb$177
- Werfen USA LLC$175
- Baxter Healthcare$124
- plus $442 from 6 others
What the payments were for
- Speaking & faculty fees$2,50021%
- Travel & lodging$7,29261%
- Food & beverage$2,20618%
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 |
|---|---|---|
| Pharmacosmos Therapeutics Inc. | 10 | $10,127 |
| Hemosonics LLC | 8 | $734 |
| Sanofi | 2 | $219 |
| Bristol Myers Squibb | 2 | $177 |
| Werfen USA LLC | 2 | $175 |
| Baxter Healthcare | 1 | $124 |
| Karyopharm Therapeutics Inc. | 1 | $120 |
| Shionogi Inc | 1 | $120 |
| AstraZeneca | 1 | $113 |
| Octapharma USA, Inc. | 1 | $42 |
| Grifols Shared Services North America, Inc. | 1 | $28 |
| Pfizer | 1 | $21 |
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.
- Monoferric$9,930
- Quantra QPlus System$554
- No Related Product$124
- XPOVIO$120
- Fetroja$120
- TAGRISSO$113
How this compares
$11,998 in reported general payments places this provider in the 95th percentile of 34 blood banking & transfusion medicine providers in California.
See all blood banking & transfusion 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.
Other blood banking & transfusion medicine in Orange
- Jesse QiaoOrange$2K
- Sierra SimmonsOrange$573
- Huy PhamLos Angeles$92K
- Grace MonisSacramento$3K
- Jennifer WooIrvine$2K
- Neil ShahStanford$2K
- Patricia KopkoSan Diego$2K
- Jonathan EsenstenSan Francisco$500
- Patrick SadlerFresno$476
- Andrew JonesOakland$190
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.