Mason Freeman
Internal Medicine · Boston, MANPI 1851473821
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $125,000 of the $125,000 with a category attached, or 100.0%. Every reported general payment came from a single manufacturer, Astellas Pharma US Inc. Among internal medicine 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 5 payments — averaging $25,000 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Astellas Pharma US Inc$125K
Across 51 payments — averaging $31,843 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.
- Janssen Research & Development, LLC$897K
- Sanofi US Services Inc.$430K
- Biogen$297K
What the payments were for
- Consulting fees$125,000100%
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 |
|---|---|---|
| Astellas Pharma US Inc | 5 | $125,000 |
How this compares
$125,000 in reported general payments places this provider in the 95th percentile of 4,983 internal medicine providers in Massachusetts.
Other internal medicine in Boston
- David SchenkeinBoston$5M
- John FallonBoston$1.8M
- Michael MendelsohnBoston$1.6M
- Gaurav SingalBoston$798K
- Asit ParikhBoston$486K
- Noopur RajeBoston$481K
- Daniel KuritzkesBoston$443K
- Xiuning leBoston$364K
- Nancy GaglianoBoston$358K
- Fatima StanfordBoston$285K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.