Arash Mohtashamian, MD
Anatomic Pathology & Clinical Pathology · Bethesda, MDNPI 1912987215
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $390,177 of the $390,290 with a category attached, or 100.0%. Roche Molecular Systems, Inc. accounts for 100.0% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2023 at $168,856 and has fallen 70.7% since, to $49,467 in 2025. Among anatomic pathology & clinical pathology 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 43 payments — averaging $9076.51 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Roche Molecular Systems, Inc.$390K
- Stemline Therapeutics Inc.$95
- Merck$18
What the payments were for
- Speaking & faculty fees$390,177100%
- Food & beverage$1130%
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 |
|---|---|---|
| Roche Molecular Systems, Inc. | 41 | $390,177 |
| Stemline Therapeutics Inc. | 1 | $95 |
| Merck | 1 | $18 |
How this compares
$390,290 in reported general payments places this provider in the 95th percentile of 186 anatomic pathology & clinical pathology providers in Maryland.
See all anatomic pathology & clinical pathology 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 anatomic pathology & clinical pathology in Bethesda
- Mark LowryBethesda$84K
- Carolyn ComptonBethesda$13K
- Pallavi Kanwar GaleraBethesda$11K
- Justin WellsBethesda$258
- Aatur SinghiBaltimore$133K
- Brigitte RonnettBaltimore$112K
- Robert KurmanBaltimore$110K
- Robert AndersBaltimore$92K
- Kelly Brenan RothschildBaltimore$67K
- Edward McCarthyBaltimore$63K
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.