Yifeng Chen
Allergy & Immunology · Bethlehem, PANPI 1447518535
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 94.7% of the total across 403 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 29 manufacturers, the largest accounting for just 23.0% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $3,201, 6.6 times the $483 reported in 2019.
Across 403 payments — averaging $21.89 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$2K
- Sanofi$2K
- Regeneron Healthcare Solutions, Inc.$780
- GSK$728
- Optinose US, Inc.$559
- CSL Behring$449
- plus $3K from 23 others
What the payments were for
- Speaking & faculty fees$250%
- Food & beverage$8,35295%
- Education$4445%
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 |
|---|---|---|
| AstraZeneca | 93 | $2,032 |
| Sanofi | 69 | $1,566 |
| Regeneron Healthcare Solutions, Inc. | 40 | $780 |
| GSK | 43 | $728 |
| Optinose US, Inc. | 30 | $559 |
| CSL Behring | 16 | $449 |
| Takeda Pharmaceuticals U.S.A., Inc. | 19 | $448 |
| Amgen | 17 | $291 |
| Sanofi-aventis U.S. LLC | 3 | $282 |
| Biocryst US Sales Co., LLC | 12 | $270 |
| Ionis Pharmaceuticals, Inc. | 8 | $269 |
| Genentech USA, Inc. | 5 | $149 |
| Kaleo, Inc. | 9 | $131 |
| Novartis | 7 | $126 |
| Pfizer | 5 | $107 |
| Verona Pharma, Inc. | 3 | $84 |
| Alk-abello, Inc | 2 | $77 |
| ARS Pharmaceuticals Operations, Inc. | 4 | $67 |
| Merck | 3 | $58 |
| Pharming Healthcare, Inc. | 2 | $49 |
| Cycle Pharmaceuticals Inc | 2 | $47 |
| Medtronic | 2 | $45 |
| Phadia US Inc. | 2 | $44 |
| Galderma Laboratories, L.p. | 1 | $41 |
| Hikma Pharmaceuticals USA | 2 | $29 |
| Paratek Pharmaceuticals, Inc. | 1 | $27 |
| Grifols USA, LLC | 1 | $25 |
| Eyevance Pharmaceuticals LLC | 1 | $21 |
| Circassia Inc. | 1 | $20 |
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
$8,821 in reported general payments places this provider in the 70th percentile of 175 allergy & immunology providers in Pennsylvania.
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 |
|---|---|---|
| Breo ElliptaFluticasone/Vilanterol | 15 | $11,260 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 15 | $11,171 |
| Arnuity ElliptaFluticasone Furoate | 11 | $3,931 |
| Wixela InhubFluticasone Propion/Salmeterol | 15 | $3,567 |
| Fluticasone-SalmeterolFluticasone Propion/Salmeterol | 19 | $2,883 |
| Azelastine-FluticasoneAzelastine/Fluticasone | 12 | $2,668 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 66 | $2,252 |
| Mometasone Furoate | 23 | $1,620 |
| Montelukast Sodium | 107 | $1,548 |
| Fluticasone Propionate | 33 | $1,410 |
| Desloratadine | 19 | $819 |
| Ventolin HfaAlbuterol Sulfate | 12 | $664 |
| Levocetirizine Dihydrochloride | 28 | $509 |
| Ipratropium Bromide | 22 | $425 |
| Azelastine Hcl | 17 | $398 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| GSKBreo Ellipta, Trelegy Ellipta, Arnuity Ellipta | $728 | $26,36241 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 70th percentile of 175 allergy & immunology providers in Pennsylvania.
Other allergy & immunology in Bethlehem
- Eric SchenkelBethlehem$845K
- Drew WeissmanPhiladelphia$12.8M
- Sergei BelenkyPittsburgh$775K
- Timothy CraigHershey$564K
- Sandra GawchikUpland$390K
- Anthony RooklinGlen Mills$319K
- Corinna BowserNarberth$229K
- Shailen ShahCollegeville$183K
- Michael PremattaHavertown$168K
- Donald HarperMechanicsburg$142K
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.