John Shen
Physical Medicine & Rehabilitation · Fontana, CANPI 1346398336
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $1,352 of the $1,562 with a category attached, or 86.6%. Every reported general payment came from a single manufacturer, Merck.
Across 7 payments — averaging $223.11 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$2K
Across 41 payments — averaging $31,237 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.
- Merck$1.3M
What the payments were for
- Travel & lodging$1,35287%
- Food & beverage$20913%
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 |
|---|---|---|
| Merck | 7 | $1,562 |
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.
- KEYTRUDA$1,326
How this compares
$1,562 in reported general payments places this provider in the 80th percentile of 830 physical medicine & rehabilitation providers in California.
See all physical medicine & rehabilitation providers in California →
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Gabapentin | 31 | $750 |
| Meloxicam | 39 | $248 |
| Ibuprofen | 20 | $242 |
Paid to pharmacies, not to this prescriber.
Other physical medicine & rehabilitation in Fontana
- Ziyad AyyoubParamount$322K
- Pratik GandhiAnaheim$122K
- Mary OatesSanta Maria$115K
- Kevin BarretteSan Francisco$84K
- Steven SampsonLos Angeles$63K
- Jeffrey ChenSan Diego$59K
- Nanette JoyceSacramento$56K
- Amir RahnavardMonterey$49K
- Kyle RyanSan Diego$39K
- Kyle YangLos Angeles$39K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.