Matthew Knouse, MD
Diagnostic Radiology · Philadelphia, PANPI 1477045284
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $2,052 of the $2,321 with a category attached, or 88.4%. Isono Health, Inc. accounts for 89.6% of it on its own, with 2 other manufacturers making up the rest. 2025 is the largest year on record at $2,079, more than ten times the $144 reported in 2019. Among diagnostic radiology clinicians in PA with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 6 payments — averaging $386.83 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Isono Health, Inc.$2K
- Ortho Dermatologics, A Division Of Bausch Health US, LLC$144
- Hologic Inc$97
What the payments were for
- Travel & lodging$2,05288%
- Food & beverage$26912%
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 |
|---|---|---|
| Isono Health, Inc. | 3 | $2,079 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 1 | $144 |
| Hologic Inc | 2 | $97 |
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
$2,321 in reported general payments places this provider in the 90th percentile of 1,665 diagnostic radiology 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 diagnostic radiology in Philadelphia
- Joan ProwdaPhiladelphia$1.1M
- Jill LangerPhiladelphia$895K
- Lisa JonesPhiladelphia$895K
- Evan SiegelmanPhiladelphia$704K
- Patrick OkanePhiladelphia$453K
- Parvati RamchandaniPhiladelphia$411K
- Andrej LyshchikPhiladelphia$241K
- David UdisPhiladelphia$198K
- Dayna WeissbergerPhiladelphia$174K
- Farouk DakoPhiladelphia$154K
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.