Chio Yokose, MD
Rheumatology · Boston, MANPI 1295145811
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $883 of the $1,083 with a category attached, or 81.5%. Every reported general payment came from a single manufacturer, Amgen.
Across 7 payments — averaging $154.65 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$1K
Across 1 payment — averaging $234,833 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.
- ANI Pharmaceuticals, Inc.$235K
What the payments were for
- Travel & lodging$88382%
- Food & beverage$20018%
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 | 7 | $1,083 |
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.
- KRYSTEXXA$803
How this compares
$1,083 in reported general payments places this provider in the 55th percentile of 265 rheumatology providers in Massachusetts.
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 |
|---|---|---|
| Humira(Cf) PenAdalimumab | 25 | $210,761 |
| ActemraTocilizumab | 18 | $41,819 |
| Colchicine | 24 | $2,024 |
| Hydroxychloroquine Sulfate | 64 | $1,934 |
| Prednisone | 120 | $1,091 |
| MethotrexateMethotrexate Sodium | 19 | $653 |
| Allopurinol | 46 | $406 |
| Sulfasalazine DrSulfasalazine | 15 | $354 |
| Gabapentin | 12 | $98 |
Paid to pharmacies, not to this prescriber.
Other rheumatology in Boston
- Marilyn PikeBoston$1.4M
- John StoneBoston$926K
- Lee SimonBoston$600K
- Jeffrey SparksBoston$299K
- Tanya LaidlawBoston$244K
- Tuhina NeogiBoston$242K
- Michael WeinblattBoston$228K
- Michael BrennerBoston$115K
- Zachary WallaceBoston$106K
- Flavia CastelinoBoston$96K
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.