Maureen O'Brien
Pediatric Hematology-Oncology · Aurora, CONPI 1710194881
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $6,700 of the $8,868 with a category attached, or 75.5%. Pfizer accounts for 75.5% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2020 at $3,500 and has fallen 98.6% since, to $49 in 2025.
Across 6 payments — averaging $1478.06 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Pfizer$7K
- Jazz Pharmaceuticals Inc.$2K
- Amgen$134
Across 113 payments — averaging $583,968 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$65.8M
- AbbVie$125K
- Amgen$74K
What the payments were for
- Consulting fees$1,86021%
- Speaking & faculty fees$6,70076%
- Food & beverage$3083%
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 |
|---|---|---|
| Pfizer | 2 | $6,700 |
| Jazz Pharmaceuticals Inc. | 3 | $2,035 |
| Amgen | 1 | $134 |
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.
How this compares
$8,868 in reported general payments places this provider in the 70th percentile of 60 pediatric hematology-oncology providers in Colorado.
See all pediatric hematology-oncology providers in Colorado →
Other pediatric hematology-oncology in Aurora
- Michael WangAurora$225K
- Lia GoreAurora$68K
- Marilyn Manco JohnsonAurora$67K
- Michael VernerisAurora$60K
- Christopher McKinneyAurora$32K
- Daniel AmbrusoAurora$30K
- Taizo NakanoAurora$24K
- Hesham EissaAurora$23K
- Rachelle NussAurora$23K
- Terry FryAurora$20K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.