Adam de Havenon, MD
Vascular Neurology · New Haven, CTNPI 1487897898
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $90,988 of the $92,662 with a category attached, or 98.2%. Novo Nordisk accounts for 95.3% of it on its own, with 2 other manufacturers making up the rest. 2025 is the largest year on record at $33,945, 8.3 times the $4,089 reported in 2021.
Across 23 payments — averaging $4028.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$88K
- Integra Lifesciences Corporation$4K
- Viz.ai, Inc.$396
Across 9 payments — averaging $17,677 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.
- Regeneron$134K
- Novartis$12K
- Amgen$12K
What the payments were for
- Consulting fees$90,98898%
- Travel & lodging$1,0691%
- Food & beverage$6051%
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 |
|---|---|---|
| Novo Nordisk | 19 | $88,266 |
| Integra Lifesciences Corporation | 1 | $4,000 |
| Viz.ai, Inc. | 3 | $396 |
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.
- Victoza$38,625
- RYBELSUS$13,095
- CEREBROFLO EVD CATHETER SET$4,000
- Ozempic$1,125
- Viz.AI LVO$307
How this compares
Too few vascular neurology providers in Connecticutto place this figure against a meaningful peer group, so we don't.
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 vascular neurology in New Haven
- Pooja KhatriNew Haven$37K
- Adam JasneNew Haven$3K
- Nishant MishraNew Haven$244
- James GilesNew Haven$0
- Tapan MehtaHartford$99K
- Isaac SilvermanHartford$24K
- Kelly MatmatiHartford$3K
- Paul Eugene LlevaGreenwich$1K
- Navdeep Singh LailNorwich$1K
- Raymond CattonHartford$808
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.