David Mankoff, MD
Nuclear Medicine · Philadelphia, PANPI 1497840896
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (48.0%), speaking fees and food and beverage — rather than concentrated in one kind of arrangement. 4 manufacturers reported payments, led by Siemens Medical Solutions USA, Inc. at 49.5% of the total.
Across 6 payments — averaging $902.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Siemens Medical Solutions USA, Inc.$3K
- Blue Earth Diagnostics$3K
- GE HealthCare$82
- Canon Medical Systems USA, Inc.$33
Across 2 payments — averaging $25,863 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.
- GE HealthCare$52K
What the payments were for
- Consulting fees$2,60048%
- Speaking & faculty fees$2,50046%
- Food & beverage$3176%
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 |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | 2 | $2,681 |
| Blue Earth Diagnostics | 2 | $2,620 |
| GE HealthCare | 1 | $82 |
| Canon Medical Systems USA, Inc. | 1 | $33 |
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.
- Axumin$2,600
- Cerianna$2,500
- Biograph Vision 600 (8 Ring/64 CT)$181
How this compares
$5,417 in reported general payments places this provider in the 85th percentile of 25 nuclear medicine providers in Pennsylvania.
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.
Other nuclear medicine in Philadelphia
- Daniel PrymaPhiladelphia$52K
- Abass AlaviPhiladelphia$16K
- Hongming ZhuangPhiladelphia$452
- John HochholdPhiladelphia$360
- Alexandros PappasPhiladelphia$309
- Steven BrownPhiladelphia$127
- Ajay KumarPhiladelphia$115
- Jiaqiong WangPhiladelphia$102
- Gang ChengPhiladelphia$27
- Nathan HallPhiladelphia$25
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.