Catherine Diefenbach
New York, NY. NPI 1982864039. Hematology & Oncology.
American Factbook Research
What was reported, 2019–2025
- $87.3 thousand
- General payments
- $87,313
- 137 separate payments. Meals, travel, speaking and consulting fees, gifts.
- $88.2 thousand
- Research payments
- $88,205
- Funding for a study, usually paid to an institution with this doctor named on it. Not added to general payments, and not income.
- $0
- Ownership and investment
- The value of a stake this doctor or an immediate family member held.
- 0
- Disputed
- This doctor has contested none of the payments reported about them.
By program year
2 more columns on a wider screen
| Program year | General | Research |
|---|---|---|
| 2025 | $10,113 | $3,932 |
| 2024 | $11,940 | $4,455 |
| 2023 | $10,987 | $4,575 |
| 2022 | $10,514 | $2,087 |
| 2021 | $10,395 | $1,410 |
| 2020 | $6,425 | $35,806 |
| 2019 | $26,940 | $35,939 |
CMS reports a program year at a time and also publishes its own total across them, which is what the figures above are. These rows are that total taken apart, not a second set of payments.
The record
- 1982864039
- National Provider Identifier
- The identifier this page is addressed by, and the one both CMS files share.
- Hematology & Oncology
- Specialty
- Allopathic & Osteopathic Physicians, in CMS's taxonomy.
- NY
- Licensed in
- The state of the licence CMS lists first.
- Covered Recipient Physician
- Recipient type
- How CMS classifies the recipient of these payments.
Medicare prescribing
CMS holds no Part D record for NPI 1982864039 in the most recent year we hold, and that has two readings it does not distinguish between: this provider billed Medicare Part D for nothing that year, or they billed it for ten claims or fewer, which CMS removes from the file before publishing to protect the patients behind them. It does not mean the data is missing, and it does not mean this provider writes no prescriptions — anything paid for privately, by Medicaid, or by a patient is not in this file at all.
Elsewhere
- Payments to doctors in New York — what was reported across the state this doctor practises in.
- What drug and device companies pay doctors — the national picture these figures are part of.
- This record at CMS — the publisher’s own page for this profile.
- The NPI registry — who this identifier belongs to, at CMS.
Data retrieved
Sources
- Open Payments — payments grouped by physician — Centers for Medicare & Medicaid Services · U.S. Government work · retrieved September 22, 2026