Covered recipient · General Payments record
MICHAEL J WILLIAMSON
Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology
General Payments · PY2018–2024
$836.75
- Reported across 38 records
- CMS publication 2026-01-23
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How these totals are calculated
- The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
- General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
- Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
- Methodology & Data — sourcing, labeling, and limitations.
By nature of payment
PY2024 · sorted by reported total
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $265.23 | 12 |
| Education | $74.99 | 1 |
By paying entity
PY2024 · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| Astellas Pharma US Inc | $88.96 | 2 |
| Janssen Biotech, Inc. | $65.81 | 2 |
| Inari Medical, Inc. | $42.26 | 1 |
| Exelixis Inc. | $29.46 | 2 |
| E.R. Squibb & Sons, L.L.C. | $23.86 | 1 |
| Lilly USA, LLC | $21.20 | 1 |
| PFIZER INC. | $20.50 | 1 |
| SUN PHARMACEUTICAL INDUSTRIES INC. | $16.87 | 1 |
| ABBVIE INC. | $16.13 | 1 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $15.17 | 1 |
By program year
All program years on this page · sorted by year
Payment records · PY2024 (13)
Sorted by paying entity, then date · as published by CMS
| Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Record ID | Source |
|---|---|---|---|---|---|---|---|
| ABBVIE INC. | $16.13 | 08/29/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1106343272 | CMS |
| Astellas Pharma US Inc | $13.97 | 01/09/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1139263492 | CMS |
| Astellas Pharma US Inc | $74.99 | 08/27/2024 | Education | Undisputed | 01/23/2026 | 1139381018 | CMS |
| E.R. Squibb & Sons, L.L.C. | $23.86 | 03/22/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1101773987 | CMS |
| Exelixis Inc. | $16.35 | 01/25/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1138562170 | CMS |
| Exelixis Inc. | $13.11 | 11/27/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1138562172 | CMS |
| Inari Medical, Inc. | $42.26 | 11/06/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1140174686 | CMS |
| Janssen Biotech, Inc. | $44.08 | 02/22/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1078632163 | CMS |
| Janssen Biotech, Inc. | $21.73 | 11/13/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1078632054 | CMS |
| Lilly USA, LLC | $21.20 | 03/30/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1135196782 | CMS |
| Novartis Pharmaceuticals Corporation | $15.17 | 06/28/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1087390528 | CMS |
| PFIZER INC. | $20.50 | 09/13/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1131862093 | CMS |
| SUN PHARMACEUTICAL INDUSTRIES INC. | $16.87 | 03/15/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1152183781 | CMS |
Source & provenance
- Dataset
- CMS Open Payments — General Payments
- Publisher of source data
- Centers for Medicare & Medicaid Services
- CMS publication date
- 2026-01-23
- Program years on this page
- 2018, 2020, 2021, 2022, 2023, 2024
- Generated from
- OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.
Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.