Physician profile
Stefan Sien
NPI 1932319464
$19,898.29
in general payments reported to CMS, 2019-2025
46 companies · $2,306 in 2025
The $2,306 reported for 2025 was more than what 78% of Pulmonary Disease providers received nationally (typical 2025 total: $500).
Payments by year
General payments by program year, as reported to CMS.
General payments by year: 2019: $1,144 · 2020: $1,210 · 2021: $1,506 · 2022: $2,053 · 2023: $6,538 · 2024: $5,141 · 2025: $2,306.
What the payments were for
Nature of payment as categorized by the reporting companies: meals, consulting, travel, and so on.
Food and Beverage: $7,320 · Education: $4,725 · Travel and Lodging: $1,939.
View as a table
| Payment type | Amount (2023-2025) |
|---|---|
| Food and Beverage | $7,320.47 |
| Education | $4,725.13 |
| Travel and Lodging | $1,939.33 |
Payment-type detail covers 2023-2025; earlier years are included in totals but not broken out here.
Who reported paying
General payments only, as reported to CMS. Product names cover 2023-2025.
| Company | General payments | Years | Top products |
|---|---|---|---|
| Intuitive Surgical, INC. | $7,731.80 | 2023-2025 | Da Vinci Surgical System |
| Glaxosmithkline, LLC. | $2,207.79 | 2019-2025 | Trelegy Ellipta, Nucala, Arexvy |
| Astrazeneca Pharmaceuticals LP | $1,871.90 | 2019-2025 | Fasenra, Breztri, Airsupra |
| Boehringer Ingelheim Pharmaceuticals, INC. | $1,209.25 | 2019-2025 | Ofev, Spiriva Respimat, Stiolto Respimat |
| Actelion Pharmaceuticals US, INC. | $1,088.21 | 2019-2025 | Uptravi, Opsumit |
| United Therapeutics Corporation | $733.26 | 2019-2024 | Tyvaso |
| Genzyme Corporation | $540.32 | 2019-2025 | |
| Regeneron Healthcare Solutions, INC. | $394.27 | 2019-2024 | Dupixent |
| Grifols USA, LLC | $367.33 | 2019-2025 | Prolastin-C Liquid |
| Merck Sharp & Dohme LLC | $349.92 | 2019-2025 | Winrevair |
| Takeda Pharmaceuticals U.S.A., INC. | $312.48 | 2021-2025 | Glassia |
| Mylan Specialty L.P. | $243.32 | 2019-2024 | Yupelri |
| Insmed, INC. | $210.76 | 2019-2025 | Arikayce |
| Sanofi-Aventis U.S. LLC | $191.42 | 2022-2024 | |
| Shionogi INC | $183.25 | 2024-2025 | Fetroja |
Show all 46 companies
| Company | General payments | Years | Top products |
|---|---|---|---|
| Bayer Healthcare Pharmaceuticals INC. | $181.55 | 2019-2024 | |
| Genentech USA, INC. | $171.18 | 2020-2023 | Xolair |
| Janssen Pharmaceuticals, INC | $155.01 | 2021-2023 | Xarelto |
| Philips North America LLC | $142.94 | 2019-2025 | Encore |
| Advanced Respiratory, INC | $123.25 | 2019-2021 | |
| Pulmonx Corporation | $122.03 | 2019-2023 | Zephyr Delivery Catheter, Pulmonx Chartis Tablet Console, Zephyr Endobronchial Valve |
| Electromed, INC. | $121.52 | 2022-2024 | Smartvest |
| Cvrx, INC. | $117.08 | 2025 | Barostim Neo System |
| Abbvie INC. | $104.19 | 2021-2024 | Teflaro |
| Ani Pharmaceuticals, INC. | $100.07 | 2025 | Purified Cortrophin Gel |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $90.81 | 2022-2023 | Lifevest |
| Paratek Pharmaceuticals, INC. | $86.82 | 2020-2022 | |
| Baxter Healthcare | $80.96 | 2023-2025 | Hillrom - Vest System Model 105 Home Care, Hillrom - Life 2000 Ventilation System |
| E.R. Squibb & Sons, L.L.C. | $74.29 | 2020-2024 | Eliquis |
| Erbe USA INC | $73.22 | 2024 | |
| Verona Pharma, INC. | $61.27 | 2025 | Ohtuvayre |
| Circassia INC. | $59.50 | 2019 | |
| Novartis Pharmaceuticals Corporation | $57.72 | 2021-2024 | |
| Inspire Medical Systems, INC. | $49.78 | 2023-2025 | Inspire |
| La Jolla Pharmaceutical Company | $49.65 | 2020 | |
| Allergan, INC. | $33.88 | 2019-2020 | |
| Phadia US INC. | $28.19 | 2022 | |
| Viatris Specialty LLC | $28.10 | 2025 | Yupelri |
| Covis Pharma Gmbh | $25.06 | 2023 | |
| 3b Medical, INC. | $22.78 | 2025 | Luna |
| Amgen INC. | $20.89 | 2025 | Tezspire |
| Pfizer INC. | $20.78 | 2022 | |
| Idorsia Pharmaceuticals US INC | $17.01 | 2023 | Quviviq |
| Harmony Biosciences LLC | $15.13 | 2023 | Wakix |
| Optinose US, INC. | $14.56 | 2024 | |
| Inogen, INC. | $13.79 | 2023 | Inogen One G5 Oxygen Concentrator - Bluetooth |
Drugs and devices associated with these payments
CMS records which products a payment was associated with, not how the money was allocated. Association is not allocation: one payment can be associated with several products, and a product listing does not mean the payment was made because of that product. Product detail covers 2023-2025.
If you want to bring it up
Most clinicians are glad to talk about this. A respectful way in:
- "I saw Stefan Sien listed in the CMS Open Payments database. Can you tell me about your work with those companies?"
- "Is there a generic or alternative to this medication, and would it work as well for me?"
- "What made you choose this particular treatment for my situation?"
These are normal questions. A good clinician will welcome them.
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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.