Wendy de Silva
Gerontology · Bethesda, MDNPI 1649200825
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 10 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 9 manufacturers, the largest accounting for just 14.3% — the pattern of someone who eats at a lot of different presentations.
Across 10 payments — averaging $94.96 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Dexcom, Inc.$135
- AstraZeneca$122
- Biogen$116
- Sanofi-aventis U.S. LLC$112
- Abbott$108
- BD$107
- plus $250 from 3 others
What the payments were for
- Food & beverage$950100%
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 |
|---|---|---|
| Dexcom, Inc. | 1 | $135 |
| AstraZeneca | 1 | $122 |
| Biogen | 1 | $116 |
| Sanofi-aventis U.S. LLC | 1 | $112 |
| Abbott | 1 | $108 |
| BD | 1 | $107 |
| AbbVie | 1 | $103 |
| Ironshore Pharmaceuticals Inc. | 2 | $94 |
| Lilly USA, LLC | 1 | $53 |
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
$950 in reported general payments places this provider in the 75th percentile of 108 gerontology 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 |
|---|---|---|
| EliquisApixaban | 44 | $31,229 |
| JanuviaSitagliptin Phosphate | 27 | $6,613 |
| Brinzolamide | 23 | $5,979 |
| Betoptic SBetaxolol Hcl | 12 | $4,709 |
| Rivastigmine | 13 | $3,686 |
| Estradiol | 17 | $3,349 |
| Toujeo SolostarInsulin Glargine,hum.Rec.Anlog | 14 | $2,622 |
| Atorvastatin Calcium | 86 | $1,767 |
| Potassium Chloride | 64 | $1,658 |
| Bumetanide | 34 | $1,534 |
| Diclofenac Sodium | 23 | $1,469 |
| Methenamine Hippurate | 14 | $1,345 |
| Ketoconazole | 12 | $1,269 |
| Levothyroxine Sodium | 109 | $1,263 |
| Latanoprost | 75 | $1,260 |
Paid to pharmacies, not to this prescriber.
Other gerontology in Bethesda
- Emile El GhandourBethesda$269
- Christi DieterichElkridge$15K
- Megan GessfordLeonardtown$12K
- Valdane RobinsonTowson$10K
- Victoria SinibaldiBaltimore$10K
- Angeline WilliamsCatonsville$6K
- Wingnay CherneskyParkville$5K
- Joyce LamWaldorf$4K
- Eyerusalem HagosEssex$4K
- Rebecca GrochowskiTowson$3K
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.