Covered recipient · General Payments record
DANIEL W CHANG
Allopathic & Osteopathic Physicians Psychiatry & Neurology Neurology
General Payments · PY2018–2024
$8,921.33
- Reported across 169 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 | $670.42 | 27 |
| Travel and Lodging | $223.03 | 1 |
| Education | $13.11 | 1 |
By paying entity
PY2024 · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| ABBVIE INC. | $271.54 | 9 |
| Stryker Corporation | $223.03 | 1 |
| PFIZER INC. | $214.91 | 10 |
| Sumitomo Pharma America, Inc. | $81.56 | 3 |
| MDD US Operations, LLC | $51.25 | 2 |
| EISAI INC. | $17.91 | 1 |
| SCILEX PHARMACEUTICALS INC. | $17.65 | 1 |
| Lundbeck LLC | $15.60 | 1 |
| Amgen Inc. | $13.11 | 1 |
By program year
All program years on this page · sorted by year
Payment records · PY2024 (29)
Sorted by paying entity, then date · as published by CMS
Program year 2024 201820192020202120222023
Record-level detail is published for PY2024; earlier years are summarised in
“By program year”.
| Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Record ID | Source |
|---|---|---|---|---|---|---|---|
| ABBVIE INC. | $34.36 | 02/06/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440800 | CMS |
| ABBVIE INC. | $27.81 | 02/22/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440802 | CMS |
| ABBVIE INC. | $28.38 | 04/02/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440804 | CMS |
| ABBVIE INC. | $29.49 | 04/09/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440806 | CMS |
| ABBVIE INC. | $34.58 | 06/04/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440808 | CMS |
| ABBVIE INC. | $33.58 | 08/01/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440810 | CMS |
| ABBVIE INC. | $31.04 | 09/24/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440812 | CMS |
| ABBVIE INC. | $29.31 | 10/22/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440814 | CMS |
| ABBVIE INC. | $22.99 | 11/06/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1103440816 | CMS |
| Amgen Inc. | $13.11 | 02/27/2024 | Education | Undisputed | 01/23/2026 | 1111545853 | CMS |
| Eisai Inc. | $17.91 | 07/23/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1110738559 | CMS |
| Lundbeck LLC | $15.60 | 01/23/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1145903857 | CMS |
| MDD US Operations, LLC | $25.44 | 08/07/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1147760807 | CMS |
| MDD US Operations, LLC | $25.81 | 10/07/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1147760809 | CMS |
| PFIZER INC. | $12.29 | 02/20/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1130884586 | CMS |
| PFIZER INC. | $29.32 | 05/02/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1131511245 | CMS |
| PFIZER INC. | $22.05 | 06/18/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1131654210 | CMS |
| PFIZER INC. | $24.11 | 08/01/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1131849597 | CMS |
| PFIZER INC. | $23.61 | 09/17/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1131937957 | CMS |
| PFIZER INC. | $38.06 | 10/03/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1132128968 | CMS |
| PFIZER INC. | $29.64 | 10/22/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1130890681 | CMS |
| PFIZER INC. | $4.41 | 10/22/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1132099419 | CMS |
| PFIZER INC. | $4.11 | 12/17/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1131029248 | CMS |
| PFIZER INC. | $27.31 | 12/17/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1131088474 | CMS |
| SCILEX PHARMACEUTICALS INC. | $17.65 | 10/15/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1136277061 | CMS |
| Stryker Corporation | $223.03 | 08/09/2024 | Travel and Lodging | Undisputed | 01/23/2026 | 1119795386 | CMS |
| Sumitomo Pharma America, Inc. | $26.01 | 02/02/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1148836707 | CMS |
| Sumitomo Pharma America, Inc. | $28.57 | 03/18/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1148836709 | CMS |
| Sumitomo Pharma America, Inc. | $26.98 | 07/30/2024 | Food and Beverage | Undisputed | 01/23/2026 | 1148836711 | 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, 2019, 2020, 2021, 2022, 2023, 2024
- Source files
- Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024
- Generated from
- OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv
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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.