Sean Leng, MD
Geriatric Medicine · Baltimore, MDNPI 1952346546
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $275,240 of the $411,954 with a category attached, or 66.8%. GSK accounts for 83.1% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2022 at $145,514 and has fallen 72.5% since, to $39,967 in 2025. Among geriatric medicine 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 474 payments — averaging $869.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- GSK$342K
- Sanofi Pasteur Inc.$69K
- Sanofi-aventis U.S. LLC$15
Across 10 payments — averaging $38,936 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Sanofi Pasteur Inc.$389K
What the payments were for
- Consulting fees$33,2038%
- Speaking & faculty fees$275,24067%
- Travel & lodging$93,59223%
- Food & beverage$9,9052%
- Education$150%
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 |
|---|---|---|
| GSK | 437 | $342,471 |
| Sanofi Pasteur Inc. | 36 | $69,468 |
| Sanofi-aventis U.S. LLC | 1 | $15 |
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.
- SHINGRIX$332,463
- FLUZONE HIGH-DOSE$7,665
- FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE$3,909
- BEXSERO$1,500
- AREXVY$750
- FLUZONE QUADRIVALENT NORTHERN HEMISPHERE$497
How this compares
$411,954 in reported general payments places this provider in the 95th percentile of 112 geriatric 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.
Other geriatric medicine in Baltimore
- Jocelyn El-SayedBaltimore$84K
- Bruce LeffBaltimore$7K
- Robert CooperBaltimore$7K
- Esther OhBaltimore$5K
- Neha KalariaBaltimore$4K
- Charmian SittambalamBaltimore$3K
- James RichardsonBaltimore$3K
- Dima HnooshBaltimore$2K
- Carla RosenthalBaltimore$864
- Kurupp DharmasenaBaltimore$829
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.