William Tarng, MD
Internal Medicine · Carson, CANPI 1376545723
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 362 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 22 manufacturers, the largest accounting for just 21.0% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2023 at $2,155 and has fallen 83.9% since, to $347 in 2025. Among internal medicine clinicians in CA with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 362 payments — averaging $19.93 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Johnson & Johnson$2K
- Novartis$971
- E.r. Squibb & Sons, L.L.C.$775
- Boehringer Ingelheim$645
- Abiomed$599
- Shionogi Inc$565
- plus $2K from 16 others
What the payments were for
- Food & beverage$7,214100%
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 |
|---|---|---|
| Johnson & Johnson | 78 | $1,516 |
| Novartis | 45 | $971 |
| E.r. Squibb & Sons, L.L.C. | 46 | $775 |
| Boehringer Ingelheim | 24 | $645 |
| Abiomed | 28 | $599 |
| Shionogi Inc | 31 | $565 |
| Pfizer | 28 | $561 |
| Merck | 30 | $546 |
| AstraZeneca(2 entities) | 13 | $218 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 9 | $196 |
| AbbVie(2 entities) | 10 | $162 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 3 | $76 |
| Medtronic | 3 | $57 |
| CSL Behring | 3 | $56 |
| Verona Pharma, Inc. | 2 | $48 |
| Gilead | 2 | $47 |
| Aimmune Therapeutics, Inc. | 2 | $46 |
| Boston Scientific | 1 | $37 |
| Biomerieux Inc | 1 | $28 |
| KCI USA, Inc. | 1 | $26 |
| Cytovale, Inc. | 1 | $21 |
| Paratek Pharmaceuticals, Inc. | 1 | $18 |
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
$7,214 in reported general payments places this provider in the 90th percentile of 13,581 internal 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 |
|---|---|---|
| EliquisApixaban | 40 | $15,165 |
| OzempicSemaglutide | 11 | $10,558 |
| JanuviaSitagliptin Phosphate | 24 | $7,164 |
| AbrysvoRsv Vacc, Pref A And Pref B/Pf | 15 | $4,222 |
| SymproicNaldemedine Tosylate | 16 | $3,707 |
| Aripiprazole | 11 | $3,427 |
| Enoxaparin Sodium | 37 | $2,598 |
| Memantine Hcl | 30 | $2,340 |
| Modafinil | 18 | $1,949 |
| Fluticasone-SalmeterolFluticasone Propion/Salmeterol | 14 | $1,918 |
| Lubiprostone | 15 | $1,465 |
| Atorvastatin Calcium | 48 | $1,098 |
| Ipratropium-AlbuterolIpratropium/Albuterol Sulfate | 29 | $936 |
| Omeprazole | 67 | $928 |
| Baclofen | 15 | $745 |
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 |
|---|---|---|
| PfizerEliquis, Abrysvo | $561 | $19,38755 claims |
| MerckJanuvia | $546 | $7,16424 claims |
| Shionogi IncSymproic | $565 | $3,70716 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 90th percentile of 13,581 internal medicine providers in California.
Other internal medicine in Carson
- Andrew ChengSouth San Francisco$55.1M
- Tung NgoNewport Beach$4.9M
- Christian EversullStanford$2.9M
- Christian SandrockSacramento$2.1M
- Hatim HusainSan Diego$2M
- Teck LingPalo Alto$1.1M
- Hyong Kimla Jolla$1M
- Rohit Loombala Jolla$965K
- Fred CohenSan Francisco$929K
- Steven EdelmanSan Diego$863K
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.