Bryn Mumma, MD
Emergency Medicine · Sacramento, CANPI 1497945273
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (56.6%), speaking fees and travel and lodging — rather than concentrated in one kind of arrangement. Roche Diagnostics Corporation accounts for 96.4% of it on its own, with 1 other manufacturer making up the rest. Reporting peaked in 2023 at $3,466 and has fallen 97.3% since, to $92 in 2024. Among emergency 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 6 payments — averaging $983.84 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Roche Diagnostics Corporation$6K
- AstraZeneca$215
Across 5 payments — averaging $12,167 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.
- Roche Diagnostics Corporation$45K
- Grifols Diagnostic Solutions, Inc.$12K
- AstraZeneca$4K
What the payments were for
- Consulting fees$3,34457%
- Speaking & faculty fees$1,50025%
- Travel & lodging$81514%
- Food & beverage$2444%
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 |
|---|---|---|
| Roche Diagnostics Corporation | 4 | $5,688 |
| AstraZeneca | 2 | $215 |
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.
- CD cobas Reagents$2,315
- ULTOMIRIS$122
How this compares
$5,903 in reported general payments places this provider in the 95th percentile of 6,006 emergency 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 emergency medicine in Sacramento
- Eric GrossSacramento$185K
- Selene CastrejonSacramento$62K
- Daniel NishijimaSacramento$23K
- Michael BlueLone Pine$915K
- Andrew AccardiEncinitas$383K
- Fredrick Melik-AbrahamianSylmar$354K
- Graham WalkerStanford$309K
- Douglas WhiteOakland$220K
- Paul PearigenSan Diego$208K
- Richard KozakMission Viejo$203K
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.