Brian Kirschner
Adolescent Medicine · Valencia, CANPI 1821095449
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 66 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 22 manufacturers, the largest accounting for just 13.2% — the pattern of someone who eats at a lot of different presentations.
Across 66 payments — averaging $19.50 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Tris Pharma Inc$170
- Sanofi Pasteur Inc.$142
- GSK$135
- Mirum Pharmaceuticals, Inc.$128
- Genentech USA, Inc.$94
- Takeda Pharmaceuticals U.S.A., Inc.$85
- plus $532 from 16 others
Across 5 payments — averaging $7491.81 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.
- Pfizer$37K
What the payments were for
- Food & beverage$1,287100%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Tris Pharma Inc | 11 | $170 |
| Sanofi Pasteur Inc. | 6 | $142 |
| GSK | 6 | $135 |
| Mirum Pharmaceuticals, Inc. | 1 | $128 |
| Genentech USA, Inc. | 5 | $94 |
| Takeda Pharmaceuticals U.S.A., Inc. | 5 | $85 |
| Merck | 5 | $82 |
| Neos Therapeutics, LP | 5 | $75 |
| Biofire Diagnostics, LLC | 4 | $60 |
| Pfizer | 3 | $42 |
| Collegium Pharmaceutical, Inc. | 2 | $41 |
| Supernus Pharmaceuticals, Inc. | 1 | $33 |
| Sobi, Inc | 1 | $31 |
| Ironshore Pharmaceuticals Inc. | 2 | $27 |
| Cranial Technologies, Inc | 2 | $25 |
| ARS Pharmaceuticals Operations, Inc. | 1 | $25 |
| Kaleo, Inc. | 1 | $17 |
| Biomerieux Inc | 1 | $16 |
| Alk-abello, Inc | 1 | $16 |
| Adlon Therapeutics L.p. | 1 | $15 |
| Shire North American Group Inc | 1 | $15 |
| LNHC, Inc | 1 | $14 |
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.
- Livmarli$128
How this compares
$1,287 in reported general payments places this provider in the 80th percentile of 202 adolescent medicine providers in California.
Other adolescent medicine in Valencia
- Michael SchoenwetterValencia$2K
- Kathy BrockettValencia$999
- Leman YelOrange$89K
- Michelle RolandLos Angeles$22K
- Venu Prabakerla Mesa$15K
- Kanani TitchenSan Diego$8K
- David NguyenFountain Valley$6K
- Anahit BlikianGlendale$5K
- Lisa LawSan Francisco$5K
- Marilou CruzDowney$5K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.