Gilbert Tang, MD
Anesthesiology · Chicago, ILNPI 1356620371
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (49.5%), consulting fees and food and beverage — rather than concentrated in one kind of arrangement. Abbott accounts for 66.7% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2024 at $12,984 and has fallen 89.5% since, to $1,368 in 2025. Among anesthesiology 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 52 payments — averaging $422.82 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Abbott$15K
- Baylis Medical Company Inc$7K
- Siemens Medical Solutions USA, Inc.$205
- ZOLL Services LLC (a/k/a ZOLL Lifecor Corp)$99
- Merck$18
What the payments were for
- Consulting fees$8,20037%
- Speaking & faculty fees$10,87549%
- Travel & lodging$7343%
- Food & beverage$2,17710%
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 |
|---|---|---|
| Abbott | 45 | $14,665 |
| Baylis Medical Company Inc | 3 | $7,000 |
| Siemens Medical Solutions USA, Inc. | 2 | $205 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 1 | $99 |
| Merck | 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.
- MitraClip$8,946
- NRG needle$7,000
- NAVITOR$2,979
- TRICLIP$1,050
- ABSOLUTE PRO$198
- ACUSON SC2000 Diagnostic Ultrasound System$131
How this compares
$21,986 in reported general payments places this provider in the 95th percentile of 1,980 anesthesiology 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 anesthesiology in Chicago
- Nishant ShahChicago$2.1M
- Tolga SuvarChicago$303K
- Dragan GastevskiChicago$240K
- Rushad MarfatiaChicago$67K
- Kurosh TakhtehchianChicago$61K
- Magdalena AnitescuChicago$46K
- Joshua PanChicago$44K
- Sanup PathakChicago$42K
- Jason RossChicago$33K
- Paul HertzChicago$29K
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.