William Chang, MD
Critical Care Medicine · Monterey Park, CANPI 1003236688
Payments from drug & device makers
Across 245 payments — averaging $28.42 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- GSK$2K
- AstraZeneca$1K
- Boehringer Ingelheim$832
- Takeda Pharmaceuticals U.S.A., Inc.$536
- Actelion Pharmaceuticals US, Inc.$462
- Merck$374
- plus $2K from 18 others
What the payments were for
- Food & beverage$6,962100%
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 |
|---|---|---|
| GSK | 56 | $1,534 |
| AstraZeneca | 33 | $1,483 |
| Boehringer Ingelheim | 33 | $832 |
| Takeda Pharmaceuticals U.S.A., Inc. | 24 | $536 |
| Actelion Pharmaceuticals US, Inc. | 9 | $462 |
| Merck | 17 | $374 |
| Electromed, Inc. | 17 | $242 |
| Verona Pharma, Inc. | 9 | $235 |
| Regeneron Healthcare Solutions, Inc. | 5 | $208 |
| Mylan Specialty L.p. | 11 | $186 |
| Sanofi | 5 | $133 |
| Intuitive Surgical | 1 | $132 |
| Abiomed | 1 | $125 |
| United Therapeutics Corporation | 5 | $117 |
| Viatris Specialty LLC | 5 | $99 |
| Baxter Healthcare | 4 | $58 |
| Amgen | 2 | $38 |
| Shionogi Inc | 1 | $33 |
| Johnson & Johnson | 2 | $31 |
| Philips North America LLC | 1 | $25 |
| Harmony Biosciences LLC | 1 | $23 |
| Mayne Pharma Commercial LLC | 1 | $19 |
| Idorsia Pharmaceuticals US Inc | 1 | $17 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 1 | $16 |
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
$6,962 in reported general payments places this provider in the 85th percentile of 715 critical care medicine providers in California.
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 |
|---|---|---|
| OfevNintedanib Esylate | 37 | $459,693 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 304 | $210,080 |
| Breztri AerosphereBudesonide/Glycopyr/Formoterol | 153 | $99,473 |
| Anoro ElliptaUmeclidinium Brm/Vilanterol Tr | 172 | $77,030 |
| Stiolto RespimatTiotropium Br/Olodaterol Hcl | 80 | $38,925 |
| Breo ElliptaFluticasone/Vilanterol | 51 | $22,314 |
| Spiriva RespimatTiotropium Bromide | 27 | $14,540 |
| Bevespi AerosphereGlycopyrrolate/Formoterol Fum | 29 | $11,942 |
| Atrovent HfaIpratropium Bromide | 23 | $11,642 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 279 | $9,348 |
| EliquisApixaban | 12 | $6,698 |
| Incruse ElliptaUmeclidinium Bromide | 20 | $6,590 |
| BreynaBudesonide/Formoterol Fumarate | 20 | $5,927 |
| Combivent RespimatIpratropium/Albuterol Sulfate | 11 | $5,082 |
| Fluticasone-SalmeterolFluticasone Propion/Salmeterol | 25 | $4,270 |
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 |
|---|---|---|
| Boehringer IngelheimOfev, Stiolto Respimat, Spiriva Respimat, Combivent Respimat | $832 | $518,240155 claims |
| GSKTrelegy Ellipta, Anoro Ellipta, Breo Ellipta, Incruse Ellipta | $1,534 | $316,015547 claims |
| AstraZenecaBreztri Aerosphere, Bevespi Aerosphere | $1,483 | $111,415182 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 85th percentile of 715 critical care medicine providers in California.
Other critical care medicine in Monterey Park
- Stephen ChenMonterey Park$394K
- Rafael LupercioRedding$14.6M
- Timothy AlbertsonSacramento$7.6M
- Carolyn CalfeeSan Francisco$5M
- Bassam YaghmourOrange$4.4M
- Cedric Franklin RutlandRiverside$3.2M
- Alex HakimLos Angeles$946K
- Praveen AkuthotaSan Diego$841K
- Wael El MaraachliSan Diego$751K
- Stephen RuossStanford$635K
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.