Yayan Chen, MD
Anatomic Pathology & Clinical Pathology · Worcester, MANPI 1003859398
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 81 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 26 manufacturers, the largest accounting for just 18.1% — the pattern of someone who eats at a lot of different presentations.
Across 81 payments — averaging $24.92 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$366
- AstraZeneca$352
- E.r. Squibb & Sons, L.L.C.$270
- Eisai Inc.$168
- Seagen Inc.$103
- Bayer$95
- plus $664 from 20 others
What the payments were for
- Food & beverage$2,018100%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 | 16 | $366 |
| AstraZeneca | 12 | $352 |
| E.r. Squibb & Sons, L.L.C. | 12 | $270 |
| Eisai Inc. | 6 | $168 |
| Seagen Inc. | 5 | $103 |
| Bayer | 4 | $95 |
| Karyopharm Therapeutics Inc. | 3 | $78 |
| Incyte Corporation | 3 | $69 |
| Geron Corporation | 2 | $61 |
| Pharmacyclics LLC, An Abbvie Company | 2 | $50 |
| Exelixis Inc. | 1 | $35 |
| Regeneron Healthcare Solutions, Inc. | 1 | $34 |
| AbbVie | 1 | $33 |
| Blue Earth Diagnostics | 1 | $33 |
| Sobi, Inc | 1 | $33 |
| Johnson & Johnson | 1 | $33 |
| Beigene USA, Inc. | 1 | $28 |
| Servier Pharmaceuticals LLC | 1 | $25 |
| Roche Diagnostics Corporation | 1 | $24 |
| Bristol Myers Squibb | 1 | $23 |
| Ortho-clinical Diagnostics, Inc. | 1 | $22 |
| Boehringer Ingelheim | 1 | $20 |
| Eyevance Pharmaceuticals LLC | 1 | $17 |
| Lilly USA, LLC | 1 | $17 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $16 |
| Pfizer | 1 | $14 |
How this compares
$2,018 in reported general payments places this provider in the 75th percentile of 196 anatomic pathology & clinical pathology providers in Massachusetts.
See all anatomic pathology & clinical pathology providers in Massachusetts →
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.
Other anatomic pathology & clinical pathology in Worcester
- Adair SeagerWorcester$591
- Jason BaronBoston$336K
- Thomas GouldHolyoke$325K
- Rosina LisWestborough$163K
- Manlio LoconteBoston$112K
- Gretchen FrielingWellesley Hills$51K
- Franklin MooreSpringfield$50K
- Lida HaririBoston$47K
- Larry ZhaoBurlington$30K
- Omer YilmazBoston$28K
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.