David Gruen, MD
Diagnostic Radiology · Stamford, CTNPI 1215901327
Payments from drug & device makers
What this record shows
The money is spread across several categories — other (46.2%), grants and consulting fees — rather than concentrated in one kind of arrangement. Hologic Inc accounts for 82.1% of it on its own, with 9 other manufacturers making up the rest. Reporting peaked in 2019 at $27,935 and has fallen 88.5% since, to $3,202 in 2025. Among diagnostic radiology clinicians in CT 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 34 payments — averaging $4019.43 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Hologic Inc$112K
- GE HealthCare$24K
- Leica Microsystems Inc.$365
- Lunit Americas, Inc.$103
- Actelion Pharmaceuticals US, Inc.$33
- AstraZeneca$32
- plus $85 from 4 others
What the payments were for
- Consulting fees$14,26410%
- Speaking & faculty fees$13,62510%
- Grants$41,99131%
- Travel & lodging$2,6922%
- Food & beverage$9281%
- Other$63,16046%
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 |
|---|---|---|
| Hologic Inc | 10 | $112,240 |
| GE HealthCare | 16 | $23,803 |
| Leica Microsystems Inc. | 1 | $365 |
| Lunit Americas, Inc. | 1 | $103 |
| Actelion Pharmaceuticals US, Inc. | 1 | $33 |
| AstraZeneca | 1 | $32 |
| United Therapeutics Corporation | 1 | $26 |
| Preventice Services, LLC | 1 | $23 |
| Vapotherm Inc | 1 | $18 |
| Merge Healthcare Incorporated | 1 | $18 |
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.
- SECURVIEW DIAGNOSTIC WORKSTATION$63,160
- Securxchange$41,991
- ULTRASOUND$6,165
- 3Dimensions$149
How this compares
$136,661 in reported general payments places this provider in the 95th percentile of 491 diagnostic radiology providers in Connecticut.
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 diagnostic radiology in Stamford
- Leslie ScouttNew Haven$507K
- Andrew ColucciNorwalk$269K
- David MadoffNew Haven$222K
- Ammar AnbariNorth Franklin$68K
- Julius ChapiroNew Haven$58K
- John LewinNew Haven$56K
- Frank MeleShelton$44K
- Michael HalperinNorth Franklin$37K
- Juan Carlos Perez LozadaNew Haven$37K
- Gregory GerstenSouthbury$32K
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.