Chenchen Zhang, MD
Pulmonary Disease · Bowie, MDNPI 1386051381
Payments from drug & device makers
Across 61 payments — averaging $117.02 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$3K
- Pinnacle Biologics, Inc$2K
- US Endoscopy$1K
- Noah Medical Corporation$450
- Pulmonx Corporation$424
- Steris Corporation$247
- plus $565 from 9 others
What the payments were for
- Travel & lodging$3,53149%
- Food & beverage$3,10744%
- Education$5007%
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 |
|---|---|---|
| Intuitive Surgical | 27 | $2,891 |
| Pinnacle Biologics, Inc | 11 | $1,511 |
| US Endoscopy | 3 | $1,050 |
| Noah Medical Corporation | 4 | $450 |
| Pulmonx Corporation | 4 | $424 |
| Steris Corporation | 3 | $247 |
| Genentech USA, Inc. | 1 | $130 |
| Boehringer Ingelheim | 1 | $122 |
| ERBE USA Inc | 1 | $97 |
| Lumenis, Inc | 1 | $59 |
| Olympus America Inc. | 1 | $58 |
| Merck | 1 | $32 |
| Pfizer | 1 | $28 |
| Novo Nordisk | 1 | $20 |
| Johnson & Johnson | 1 | $17 |
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.
- Da Vinci Surgical System$2,354
- TRUFREEZE$1,201
- Photofrin$1,176
- CHARTIS CATHETER$395
- ZEPHYR DELIVERY CATHETER$395
- ZEPHYR ENDOBRONCHIAL VALVE$395
- PULMONX CHARTIS TABLET CONSOLE$395
- GALAXY$268
How this compares
$7,138 in reported general payments places this provider in the 70th percentile of 297 pulmonary disease 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 pulmonary disease in Bowie
- Richard BernsteinAnnapolis$5.7M
- Alan SchwartzBaltimore$1.6M
- Sonye DanoffBaltimore$1.5M
- Michael DrummondBaltimore$1.4M
- da Wei LiaoBethesda$1.3M
- Paul HassounBaltimore$1.3M
- Lonny YarmusBaltimore$1.2M
- Jonathan SevranskyBaltimore$971K
- Robert ChasseSalisbury$788K
- Robert WiseBaltimore$761K
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.