Tien-I Su, MD
Rheumatology · Whittier, CANPI 1750581930
Payments from drug & device makers
Across 1,002 payments — averaging $8399.41 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$4.2M
- Eli Lilly$1.2M
- AbbVie$1M
- GSK$807K
- Gilead$701K
- Pfizer$140K
- plus $378K from 28 others
Across 6 payments — averaging $21,670 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Eli Lilly$130K
What the payments were for
- Grants$7,50056%
- Food & beverage$5,87944%
- Education$350%
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 |
|---|---|---|
| Amgen(2 entities) | 49 | $4,152,940 |
| Eli Lilly | 56 | $1,234,530 |
| AbbVie | 286 | $1,001,881 |
| GSK | 197 | $807,280 |
| Gilead | 43 | $701,487 |
| Pfizer | 61 | $140,206 |
| American Regent | 1 | $111,131 |
| Novartis | 30 | $34,351 |
| Kiniksa Pharmaceuticals, Ltd. | 71 | $32,736 |
| Janssen Research & Development, LLC | 25 | $32,092 |
| Sanofi US Services Inc. | 12 | $31,995 |
| Boehringer Ingelheim | 8 | $25,353 |
| E.r. Squibb & Sons, L.L.C. | 20 | $24,741 |
| Hexal AG | 25 | $21,696 |
| Kiniksa Pharmaceuticals International, PLC | 22 | $20,231 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $17,000 |
| Swing Therapeutics, Inc. | 4 | $8,958 |
| Boehringer Ingelheim International GmbH | 36 | $7,284 |
| Ironwood Pharmaceuticals, Inc | 2 | $5,178 |
| Anika Therapeutics, Inc. | 2 | $2,200 |
| Sandoz | 1 | $1,394 |
| Johnson & Johnson | 13 | $481 |
| Sanofi | 7 | $278 |
| Genentech USA, Inc. | 6 | $158 |
| Sobi, Inc | 2 | $144 |
| Cumberland Pharmaceuticals, Inc. | 4 | $139 |
| Bristol Myers Squibb | 4 | $86 |
| Lilly USA, LLC | 3 | $57 |
| UCB, Inc. | 2 | $55 |
| AstraZeneca | 3 | $48 |
| Actelion Pharmaceuticals US, Inc. | 2 | $34 |
| Aurinia Pharma U.S., Inc. | 1 | $32 |
| Hikma Pharmaceuticals USA | 1 | $19 |
| United Therapeutics Corporation | 1 | $12 |
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
$8,416,206 in reported general payments places this provider in the 95th percentile of 808 rheumatology 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 |
|---|---|---|
| ProliaDenosumab | 38 | $63,891 |
| TymlosAbaloparatide | 15 | $40,242 |
| Mycophenolate Mofetil | 30 | $3,903 |
| Lidocaine | 17 | $3,306 |
| Sildenafil Citrate | 21 | $2,715 |
| Diclofenac Sodium | 78 | $2,643 |
| Hydroxychloroquine Sulfate | 62 | $2,485 |
| MethotrexateMethotrexate Sodium | 72 | $1,742 |
| Gabapentin | 87 | $1,741 |
| Leflunomide | 20 | $1,687 |
| Duloxetine Hcl | 41 | $1,591 |
| Cevimeline Hcl | 15 | $975 |
| Alendronate Sodium | 91 | $648 |
| Pregabalin | 25 | $367 |
| Celecoxib | 16 | $286 |
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 |
|---|---|---|
| AmgenProlia | $4,152,940 | $63,89138 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 95th percentile of 808 rheumatology providers in California.
Other rheumatology in Whittier
- Samy MetyasCovina$12.9M
- Christine ThaiHuntington Beach$8.5M
- Eric LeeUpland$6.9M
- Orrin TroumSanta Monica$6.9M
- Shirley PangFullerton$5.7M
- William RobinsonStanford$5.1M
- Dan laTujunga$5.1M
- Christina Charles-SchoemanLos Angeles$4.8M
- Suneet GrewalWest Hollywood$3.8M
- Gerald Hola Palma$3.6M
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.