Karen Anderson, MD
Hematology & Oncology · Scottsdale, AZNPI 1396712089
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $17,280 of the $18,589 with a category attached, or 93.0%. 5 manufacturers reported payments, led by Merck at 51.5% of the total. Reporting peaked in 2021 at $12,532 and has fallen 96.3% since, to $458 in 2025.
Across 23 payments — averaging $808.23 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$10K
- Gilead$8K
- Stemline Therapeutics Inc.$298
- AstraZeneca$245
- AbbVie$23
Across 2 payments — averaging $18,750 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Merck$38K
What the payments were for
- Consulting fees$17,28093%
- Food & beverage$1,2287%
- Education$810%
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 | 4 | $9,575 |
| Gilead | 11 | $8,449 |
| Stemline Therapeutics Inc. | 3 | $298 |
| AstraZeneca | 4 | $245 |
| AbbVie | 1 | $23 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$18,589 in reported general payments places this provider in the 70th percentile of 261 hematology & oncology providers in Arizona.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| KisqaliRibociclib Succinate | 16 | $303,806 |
| Letrozole | 64 | $1,648 |
| Prochlorperazine Maleate | 19 | $151 |
| Anastrozole | 11 | $140 |
| Olanzapine | 15 | $127 |
| Ondansetron Hcl | 17 | $126 |
| Dexamethasone | 11 | $119 |
Paid to pharmacies, not to this prescriber.
Other hematology & oncology in Scottsdale
- Jeffrey SchriberScottsdale$715K
- Tanios Bekaii-SaabScottsdale$527K
- Rajesh KukunoorScottsdale$499K
- Yousef ZakhariaScottsdale$214K
- Thai HoScottsdale$190K
- Alan BryceScottsdale$157K
- Daniel AhnScottsdale$91K
- Brendan CurleyScottsdale$87K
- Alexander StewartScottsdale$76K
- Saurabh ChhabraScottsdale$68K
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.