Leslie Kean
Pediatric Hematology-Oncology · Boston, MANPI 1528140258
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $546,668 of the $558,031 with a category attached, or 98.0%. Vertex accounts for 96.1% of it on its own, with 7 other manufacturers making up the rest. Among pediatric hematology-oncology clinicians in MA 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 74 payments — averaging $7540.96 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Vertex$536K
- Gilead$8K
- EMD Serono, Inc.$6K
- Regeneron$6K
- National Marrow Donor Program$2K
- Syndax Pharmaceuticals, Inc.$135
- plus $73 from 2 others
Across 25 payments — averaging $539,773 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.
- E.r. Squibb & Sons, L.L.C.$10.2M
- Regeneron$1.4M
- Adaptive Biotechnologies Corporation$1M
- EMD Serono, Inc.$375K
- EMD Serono Research & Development Institute, Inc.$325K
- Gilead$189K
- plus $26K from 1 others
What the payments were for
- Consulting fees$546,66898%
- Speaking & faculty fees$7,8551%
- Travel & lodging$2,5950%
- Food & beverage$9130%
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 |
|---|---|---|
| Vertex | 45 | $536,256 |
| Gilead | 9 | $8,227 |
| EMD Serono, Inc. | 3 | $6,000 |
| Regeneron | 7 | $5,534 |
| National Marrow Donor Program | 7 | $1,806 |
| Syndax Pharmaceuticals, Inc. | 1 | $135 |
| Sobi, Inc | 1 | $54 |
| E.r. Squibb & Sons, L.L.C. | 1 | $19 |
How this compares
$558,031 in reported general payments places this provider in the 95th percentile of 114 pediatric hematology-oncology providers in Massachusetts.
See all pediatric hematology-oncology providers in Massachusetts →
Other pediatric hematology-oncology in Boston
- Todd GolubBoston$213K
- Rachael GraceBoston$201K
- Stacy CroteauBoston$117K
- Matthew HeeneyBoston$101K
- Susan PerrineBoston$96K
- Christine DuncanBoston$89K
- Eric GrabowskiBoston$56K
- Derek HansonBoston$54K
- Susan ParsonsBoston$47K
- Karen BrideBoston$47K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.