Matthews Chacko, MD
Interventional Cardiology · Nashville, TNNPI 1497884647
Payments from drug & device makers
What this record shows
Medtronic accounts for 77.8% of it on its own, with 6 other manufacturers making up the rest. That places this record below the midpoint for interventional cardiology clinicians in TN, where the typical reported total is $7,646.
Across 53 payments — averaging $116.37 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$5K
- Boston Scientific$894
- Abiomed$209
- Teleflex LLC$130
- ZOLL Services LLC (a/k/a ZOLL Lifecor Corp)$93
- ZOLL Circulation Inc$28
- plus $15 from 1 others
What the payments were for
- Travel & lodging$3,54658%
- Food & beverage$2,62142%
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 |
|---|---|---|
| Medtronic(2 entities) | 36 | $4,799 |
| Boston Scientific | 11 | $894 |
| Abiomed | 2 | $209 |
| Teleflex LLC | 1 | $130 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 1 | $93 |
| ZOLL Circulation Inc | 1 | $28 |
| Abbott | 1 | $15 |
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.
- CoreValve Evolut$2,287
- SYMPLICITY G3$1,544
- AVVIGO Guidance System$402
- OPTICROSS$281
- ONYX FRONTIER$180
- Impella$161
- TRAPLINER$130
How this compares
$6,168 in reported general payments places this provider in the 40th percentile of 207 interventional cardiology providers in Tennessee.
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 |
|---|---|---|
| XareltoRivaroxaban | 13 | $21,238 |
| Rosuvastatin Calcium | 53 | $774 |
| Isosorbide Mononitrate ErIsosorbide Mononitrate | 44 | $630 |
| Atorvastatin Calcium | 41 | $536 |
| Ezetimibe | 21 | $484 |
| Nifedipine ErNifedipine | 13 | $431 |
| Metoprolol Succinate | 11 | $229 |
| Carvedilol | 13 | $81 |
| Warfarin Sodium | 12 | $70 |
| Losartan Potassium | 24 | $58 |
| Metoprolol Tartrate | 11 | $32 |
Paid to pharmacies, not to this prescriber.
Other interventional cardiology in Nashville
- Jimmy KerriganNashville$644K
- Kashish GoelNashville$558K
- Brian JeffersonNashville$547K
- Michael MorseNashville$353K
- Nadia SuttonNashville$344K
- Samuel HorrNashville$246K
- Colin BarkerNashville$217K
- Leah RajNashville$88K
- Andrew GoodmanNashville$57K
- Jay PatelNashville$48K
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.