Larissa May, MD
Emergency Medicine · Washington, DCNPI 1083624282
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (59.2%), speaking fees and travel and lodging — rather than concentrated in one kind of arrangement. 18 manufacturers reported payments, led by Gilead at 46.9% of the total. Among emergency medicine clinicians in DC 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 114 payments — averaging $1527.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Gilead$82K
- Biomerieux Inc$25K
- Roche Diagnostics Corporation$11K
- Roche Molecular Systems, Inc.$9K
- Abbott$9K
- Ferring Pharmaceuticals Inc.$9K
- plus $28K from 12 others
Across 28 payments — averaging $27,150 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.
- Biofire Diagnostics, LLC$278K
- Roche Molecular Systems, Inc.$203K
- Merck$199K
- Roche Diagnostics Corporation$54K
- Gilead$26K
What the payments were for
- Consulting fees$103,18659%
- Speaking & faculty fees$61,73935%
- Travel & lodging$5,7653%
- Food & beverage$3,4402%
- Education$290%
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 |
|---|---|---|
| Gilead | 15 | $81,764 |
| Biomerieux Inc | 19 | $25,407 |
| Roche Diagnostics Corporation | 14 | $11,352 |
| Roche Molecular Systems, Inc. | 10 | $9,283 |
| Abbott | 5 | $9,111 |
| Ferring Pharmaceuticals Inc. | 17 | $9,021 |
| Biofire Diagnostics, LLC | 9 | $8,276 |
| Fisher Scientific Company L.L.C. | 6 | $6,508 |
| Genmark Diagnostics, Inc. | 2 | $5,478 |
| Cepheid | 7 | $5,280 |
| La Jolla Pharmaceutical Company | 1 | $1,500 |
| Talis Biomedical Corporation | 1 | $375 |
| GSK | 1 | $325 |
| Opgen, Inc. | 1 | $221 |
| Novavax Inc | 1 | $97 |
| Bio-rad Laboratories, Inc. | 3 | $83 |
| Janssen Research & Development, LLC | 1 | $48 |
| Astellas Pharma US Inc | 1 | $29 |
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.
- BIOFIRE SPOTFIRE Respiratory/Sore Throat (R/ST) Panel$11,101
- BIOFIRE SPOTFIRE Respiratory (R) Panel$10,800
- BIOFIRE RESPIRATORY PANEL 2.1$7,694
- REBYOTA$6,452
- XPERT$6,000
- MOLECULAR DIAGNOSTICS RESEARCH & DEVELOPMENT$5,524
- ID NOW INSTRUMENT$4,352
- VIROSEQ$3,750
- BRAHMS PCT KRYPTOR$3,247
- Procalcitonin$3,200
- GENEXPERT$3,200
- Xerava$1,500
- POC cobas Liat Analyzer, Assays, Controls and Accessories$1,000
- Accu-Chek Inform II Instrument with RF card$690
- GENBODY COVID-19 ANTIGEN TEST$375
- ePlex$148
- cobas Liat Analyzer$138
- COBAS INSTRUMENTS & REAGENTS$130
How this compares
$174,159 in reported general payments places this provider in the 95th percentile of 271 emergency medicine providers in District of Columbia.
See all emergency medicine providers in District of Columbia →
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Omeprazole | 11 | $43 |
Paid to pharmacies, not to this prescriber.
Other emergency medicine in Washington
- James D'ortaWashington$750K
- Andrew MeltzerWashington$114K
- Sarah BerghoffWashington$112K
- Erica ValdovinosWashington$37K
- Aisha LiferidgeWashington$33K
- David YamaneWashington$17K
- Yiju LiuWashington$12K
- Judy LinWashington$8K
- Aaran DrakeWashington$7K
- Janae DarkWashington$3K
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.