Ian Marshall, MD
Urology · Charleston, SCNPI 1255384053
Payments from drug & device makers
Across 649 payments — averaging $92.61 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Johnson & Johnson$18K
- Bayer$14K
- Amgen$4K
- AstraZeneca$4K
- Janssen Global Services, LLC$3K
- Boston Scientific$3K
- plus $14K from 54 others
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.
How this compares
$60,103 in reported general payments places this provider in the 90th percentile of 196 urology providers in South Carolina.
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 urology in Charleston
- Sandip PrasadCharleston$2.4M
- Stephen SavageCharleston$2.1M
- Thomas KeaneCharleston$281K
- Matvey TsivianCharleston$101K
- Robert GrubbCharleston$90K
- Paul WombleCharleston$88K
- John BrittonCharleston$15K
- John AdamsCharleston$15K
- Bradley SteeleCharleston$12K
- Alexander RamsayCharleston$10K
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.