Chian Kwoh, MD
Rheumatology · Tucson, AZNPI 1730153131
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $10,437 of the $11,593 with a category attached, or 90.0%. EMD Serono, Inc. accounts for 84.6% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2019 at $8,589 and has fallen 99.3% since, to $56 in 2025.
Across 12 payments — averaging $966.07 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- EMD Serono, Inc.$10K
- GSK$2K
- Astrazeneca UK Limited$56
Across 42 payments — averaging $4285.65 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.
- E.r. Squibb & Sons, L.L.C.$71K
- GSK$31K
- Novartis$30K
- EMD Serono, Inc.$23K
- AbbVie$14K
- Eli Lilly$7K
- plus $4K from 2 others
What the payments were for
- Consulting fees$10,43790%
- Travel & lodging$1,0999%
- Food & beverage$560%
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 |
|---|---|---|
| EMD Serono, Inc. | 9 | $9,809 |
| GSK | 2 | $1,728 |
| Astrazeneca UK Limited | 1 | $56 |
How this compares
$11,593 in reported general payments places this provider in the 65th percentile of 102 rheumatology providers in Arizona.
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.
Other rheumatology in Tucson
- Michael MaricicTucson$110K
- Augusto PosadasTucson$81K
- Romy CabacunganTucson$26K
- Jeffrey LoomerTucson$21K
- Ulker TokTucson$20K
- Jawad BilalTucson$19K
- Berchman VazTucson$9K
- James EvansTucson$5K
- Shannon HoweTucson$4K
- Albert RedfordTucson$3K
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.