Mark Mounajjed, MD
Infectious Disease · Madison, WINPI 1891789897
Payments from drug & device makers
What this record shows
This record is dominated by education: $115 of the $134 with a category attached, or 86.0%. Astellas Pharma US Inc accounts for 73.9% of it on its own, with 2 other manufacturers making up the rest.
Across 3 payments — averaging $44.65 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Astellas Pharma US Inc$99
- Merck$19
- Insmed, Inc.$16
What the payments were for
- Food & beverage$1914%
- Education$11586%
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 |
|---|---|---|
| Astellas Pharma US Inc | 1 | $99 |
| Merck | 1 | $19 |
| Insmed, Inc. | 1 | $16 |
How this compares
$134 in reported general payments places this provider in the 65th percentile of 133 infectious disease providers in Wisconsin.
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 |
|---|---|---|
| Vancomycin Hcl | 17 | $1,015 |
| Cefadroxil | 13 | $766 |
| CeftriaxoneCeftriaxone Sodium | 16 | $533 |
| Ciprofloxacin Hcl | 14 | $423 |
| Penicillin V Potassium | 18 | $259 |
| Amoxicillin | 17 | $123 |
Paid to pharmacies, not to this prescriber.
Other infectious disease in Madison
- James LevinMadison$167K
- Robert StrikerMadison$80K
- Shravan KethireddyMadison$22K
- Nasia SafdarMadison$22K
- David AndesMadison$20K
- Barry FoxMadison$541
- Dawd SirajMadison$364
- Bradley SmithMadison$310
- John CherianMadison$259
- Amanda CarlsonMadison$146
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.