Jonathan Zenilman, MD
Infectious Disease · Baltimore, MDNPI 1730119264
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $196,254 of the $201,887 with a category attached, or 97.2%. Pfizer accounts for 98.6% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2022 at $57,056 and has fallen 73.7% since, to $14,988 in 2025. Among infectious disease clinicians in MD with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 135 payments — averaging $1495.46 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Pfizer$199K
- Siemens Medical Solutions USA, Inc.$2K
- Cipla USA Inc.$500
- Tetraphase Pharmaceuticals, Inc.$113
- Orasure Technologies Inc.$27
What the payments were for
- Consulting fees$196,25497%
- Speaking & faculty fees$1,3901%
- Travel & lodging$3,4002%
- Food & beverage$8380%
- Gifts$50%
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 |
|---|---|---|
| Pfizer | 130 | $198,997 |
| Siemens Medical Solutions USA, Inc. | 1 | $2,250 |
| Cipla USA Inc. | 1 | $500 |
| Tetraphase Pharmaceuticals, Inc. | 2 | $113 |
| Orasure Technologies Inc. | 1 | $27 |
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
$201,887 in reported general payments places this provider in the 95th percentile of 289 infectious disease providers in Maryland.
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 infectious disease in Baltimore
- Robert RedfieldBaltimore$779K
- Luciana BorioBaltimore$671K
- Mark SulkowskiBaltimore$240K
- Robert EdelmanBaltimore$125K
- Kjell WibergBaltimore$113K
- Christine DurandBaltimore$53K
- Myron LevineBaltimore$51K
- Robert BollingerBaltimore$50K
- Richard BergBaltimore$47K
- Justin OrtizBaltimore$46K
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.