Who Paid My Doc
Mark Kay
Stanford, CA Medical Doctor
CMS profile 2786084
300 Pasteur Dr, Stanford, CA 94305
General payments
$97,430
Research payments
$0
Ownership & investment interest
$0
Research they led as principal investigator
$26,157
Through program year 2025, Mark Kay of Stanford, CA is reported in the CMS Open Payments database as having received $97,430 across 26 general payments and $0 in research payments paid to them. Separately, studies naming them as principal investigator received $26,157 in research payments, paid to institutions rather than to them.
No combined total General, research and ownership are kept apart. Each is reported under its own rules, and ownership is not money that moved at all but the value of a stake held. A meal, a clinical trial grant and a shareholding do not add up to anything meaningful, so this site does not add them. The principal-investigator line is research money paid to institutions for studies they led — not to them — and is not added to anything either.
By program year
5 rows| Year | Kind | Relative to this record's peak year | Amount | Records |
|---|---|---|---|---|
| 2025 | General | $24,000 | 1 | |
| 2024 | General | $39,644 | 17 | |
| 2023 | General | $12,800 | 1 | |
| 2022 | General | $13,186 | 6 | |
| 2021 | General | $7,800 | 1 |
Beside peers
- Mark Kay
- California median
- Middle half of California
- National median
In program year 2025, general payments to Mark Kay were reported at $24,000. Among 98,626 California profiles paid that year, the median was $172 and the middle half received between $54 and $610.
Show as a table
| Year | Mark Kay | California median | Middle half | National median |
|---|---|---|---|---|
| 2019 | $0 | $161 | $50–$652 | $163 |
| 2020 | $0 | $114 | $34–$392 | $114 |
| 2021 | $7,800 | $137 | $41–$509 | $132 |
| 2022 | $13,186 | $152 | $48–$573 | $149 |
| 2023 | $12,800 | $162 | $50–$581 | $160 |
| 2024 | $39,644 | $162 | $52–$583 | $164 |
| 2025 | $24,000 | $172 | $54–$610 | $169 |
Breakdown
Records
26 reportedEvery payment, record by record
Date, company, amount, what it was for and the product named — filter by year, kind and company, or download as CSV.
Related records
What this means
U.S. law requires drug and medical device manufacturers to report payments and transfers of value they make to physicians and teaching hospitals. The Centers for Medicare & Medicaid Services publishes that record each year. This page shows what was reported about this person, and nothing else.
An ownership interest is different from the other two. It is not a payment: it is a stake — shares, options, a partnership holding — that a physician or an immediate family member held in a manufacturer during that year. The figure shown is what the stake was reported to be worth.
Research payments frequently pass through a clinician to the institution running a trial, and rarely represent personal income. They should be read differently from general payments.