DANIEL TANDEL CHANG
Allopathic & Osteopathic Physicians|Radiology|Radiation Oncology ANN ARBOR, MI NPI 1285722892
Browse related groups: Allopathic & Osteopathic Physicians|Radiology|Radiation Oncology MI Siemens Medical Solutions USA, Inc. All categories
General Payments — all program years on this page
$37,146.85
- Category: General Payments
- Program years: PY2018–2024
- Record count: 59
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $5,457.33 across 6 records · disputed records: 0
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How this figure is 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
Latest program year (PY2024) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Consulting Fee | $4,500.00 | 1 |
| Travel and Lodging | $734.14 | 1 |
| Food and Beverage | $223.19 | 4 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | $5,356.62 | 3 |
| Novocure Inc. | $53.66 | 1 |
| Mentor Worldwide LLC | $47.05 | 2 |
By program year
Records — PY2024 (6)
| Record ID | Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Source |
|---|---|---|---|---|---|---|---|
| 1077613198 | Mentor Worldwide LLC | $32.87 | 03/08/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1077613210 | Mentor Worldwide LLC | $14.18 | 10/21/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1093691504 | Siemens Medical Solutions USA, Inc. | $4,500.00 | 10/30/2024 | Consulting Fee | Undisputed | 01/23/2026 | View at CMS |
| 1093691506 | Siemens Medical Solutions USA, Inc. | $122.48 | 10/30/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
| 1093691508 | Siemens Medical Solutions USA, Inc. | $734.14 | 10/30/2024 | Travel and Lodging | Undisputed | 01/23/2026 | View at CMS |
| 1123334801 | Novocure Inc. | $53.66 | 06/01/2024 | Food and Beverage | Undisputed | 01/23/2026 | View at CMS |
Provenance & corrections
- Dataset: CMS Open Payments — General Payments
- Source: CMS Open Payments dataset (bulk file)
- Publisher of source data: Centers for Medicare & Medicaid Services
- 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.