Santiago Lopez
Pediatric Infectious Diseases · Sioux Falls, SDNPI 1922351246
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $8,130 of the $12,431 with a category attached, or 65.4%. Merck accounts for 67.1% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2020 at $8,858 and has fallen 99.3% since, to $60 in 2025.
Across 16 payments — averaging $776.96 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$8K
- Seqirus USA Inc$4K
- Pfizer$60
- Novo Nordisk$14
- Amgen$13
Across 138 payments — averaging $4352.28 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$562K
- GSK$19K
- Astrazeneca UK Limited$11K
- Modernatx, Inc.$5K
- Merck$3K
What the payments were for
- Speaking & faculty fees$4,00032%
- Travel & lodging$8,13065%
- Food & beverage$2882%
- Education$130%
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 |
|---|---|---|
| Merck | 10 | $8,345 |
| Seqirus USA Inc | 3 | $4,000 |
| Pfizer | 1 | $60 |
| Novo Nordisk | 1 | $14 |
| Amgen | 1 | $13 |
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.
- ZERBAXA$8,130
How this compares
Too few pediatric infectious diseases providers in South Dakotato place this figure against a meaningful peer group, so we don't.
Other pediatric infectious diseases in Sioux Falls
- Archana ChatterjeeSioux Falls$275K
- Margaret FreeSioux Falls$15
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.