Mark Fersch, DO
Family Medicine · Lutherville Timonium, MDNPI 1104445030
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 14 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 9 manufacturers reported payments, led by Acadia Pharmaceuticals Inc at 52.4% of the total. Reporting peaked in 2023 at $306 and has fallen 58.5% since, to $127 in 2025.
Across 14 payments — averaging $34.22 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Acadia Pharmaceuticals Inc$251
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$90
- Sumitomo Pharma America, Inc.$24
- Phadia US Inc.$24
- Averitas Pharma Inc.$23
- Exact Sciences$21
- plus $47 from 3 others
What the payments were for
- Food & beverage$479100%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Acadia Pharmaceuticals Inc | 5 | $251 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 2 | $90 |
| Sumitomo Pharma America, Inc. | 1 | $24 |
| Phadia US Inc. | 1 | $24 |
| Averitas Pharma Inc. | 1 | $23 |
| Exact Sciences | 1 | $21 |
| UCB, Inc. | 1 | $17 |
| GSK | 1 | $15 |
| Acorda Therapeutics, Inc | 1 | $14 |
How this compares
$479 in reported general payments places this provider in the 55th percentile of 1,193 family medicine 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Atorvastatin Calcium | 11 | $122 |
Paid to pharmacies, not to this prescriber.
Other family medicine in Lutherville Timonium
- Karen DonaldsonBaltimore$899K
- Louis JacquesBaltimore$522K
- Michael ObiefuneBaltimore$291K
- Thomas LawrenceBerlin$254K
- Casey ScottCambridge$88K
- Daljeet SalujaBaltimore$63K
- Sanjay SaxenaHagerstown$60K
- Cynthia KleppingerSilver Spring$51K
- Tramaine DavisBowie$43K
- Alkesh PatelColumbia$42K
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.