Darius Gilvydis, MD
Diagnostic Radiology · Naperville, ILNPI 1811192867
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $24,237 of the $29,396 with a category attached, or 82.5%. Leica Microsystems Inc. accounts for 77.1% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2023 at $18,161 and has fallen 97.6% since, to $436 in 2024. Among diagnostic radiology clinicians in IL 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 14 payments — averaging $2099.69 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Leica Microsystems Inc.$23K
- Bard Peripheral Vascular, Inc.$5K
- Dilon Technologies, Inc.$2K
What the payments were for
- Consulting fees$24,23782%
- Speaking & faculty fees$4,61616%
- Food & beverage$5432%
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 |
|---|---|---|
| Leica Microsystems Inc. | 10 | $22,677 |
| Bard Peripheral Vascular, Inc. | 3 | $4,718 |
| Dilon Technologies, Inc. | 1 | $2,000 |
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.
- Mammotome revolve$8,360
- DILON 6800 GAMMA CAMERA$2,000
- ORIGINAL MAMMOTOME$1,090
- BIOPSY SITE IDENTIFIERS$344
How this compares
$29,396 in reported general payments places this provider in the 95th percentile of 1,417 diagnostic radiology providers in Illinois.
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 Naperville
- Osmanuddin AhmedChicago$751K
- Mikin PatelChicago$391K
- Ronald HidalgoSpringfield$219K
- Auveek BasuChicago$148K
- Georgia SpearChicago$107K
- James CarrChicago$92K
- Ryan AveryChicago$82K
- Travis HillenBelleville$78K
- Amir BorhaniChicago$58K
- Nita ParekhBarrington$55K
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.