Ryan Sullivan, MD
Internal Medicine · Cambridge, MANPI 1881696003
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $21,649 of the $33,296 with a category attached, or 65.0%. 11 manufacturers reported payments, led by E.r. Squibb & Sons, L.L.C. at 32.8% of the total. Reporting peaked in 2023 at $12,152 and has fallen 98.8% since, to $145 in 2025. Among internal medicine clinicians in MA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 27 payments — averaging $1233.18 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- E.r. Squibb & Sons, L.L.C.$11K
- Novartis$11K
- Merck$8K
- Eisai Inc.$2K
- Astrazeneca UK Limited$1K
- Genentech, Inc.$243
- plus $356 from 5 others
Across 704 payments — averaging $12,054 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$1.8M
- Genentech, Inc.$1.7M
- Modernatx, Inc.$1.2M
- Novartis$912K
- Eli Lilly$623K
- Sanofi US Services Inc.$538K
- plus $1.7M from 11 others
What the payments were for
- Consulting fees$21,64965%
- Speaking & faculty fees$8,75026%
- Travel & lodging$2,0826%
- Food & beverage$8152%
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 |
|---|---|---|
| E.r. Squibb & Sons, L.L.C. | 6 | $10,922 |
| Novartis | 4 | $10,625 |
| Merck | 9 | $8,432 |
| Eisai Inc. | 1 | $1,719 |
| Astrazeneca UK Limited | 1 | $1,000 |
| Genentech, Inc. | 1 | $243 |
| Clinigen, Inc. | 1 | $145 |
| Immunocore Limited | 1 | $124 |
| Modernatx, Inc. | 1 | $56 |
| Alkermes, Inc. | 1 | $26 |
| Genentech USA, Inc. | 1 | $4 |
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
$33,296 in reported general payments places this provider in the 95th percentile of 4,983 internal medicine 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 |
|---|---|---|
| Prednisone | 23 | $151 |
Paid to pharmacies, not to this prescriber.
Other internal medicine in Cambridge
- Alan GarberCambridge$4.9M
- Joanna HaasCambridge$268K
- Amy ColsonCambridge$171K
- Madalon MeanyCambridge$123K
- David SchenkeinBoston$5M
- John FallonBoston$1.8M
- Michael MendelsohnBoston$1.6M
- Sandra RichmanBrookline$1.4M
- Gaurav SingalBoston$798K
- Asit ParikhBoston$486K
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.