Karthiek Narala, MD
Interventional Cardiology · Henderson, NVNPI 1730416371
Payments from drug & device makers
Across 409 payments — averaging $107.31 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Shockwave Medical, Inc$27K
- Medtronic$4K
- Abiomed$3K
- Philips North America LLC$2K
- Cagent Vascular Inc$2K
- Asahi Intecc USA, Inc.$1K
- plus $6K from 32 others
What the payments were for
- Consulting fees$14,50033%
- Speaking & faculty fees$9,90023%
- Travel & lodging$2,7866%
- Food & beverage$16,42237%
- Education$2000%
- Gifts$840%
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 |
|---|---|---|
| Shockwave Medical, Inc | 52 | $26,818 |
| Medtronic(2 entities) | 72 | $3,717 |
| Abiomed | 41 | $2,745 |
| Philips North America LLC | 22 | $1,853 |
| Cagent Vascular Inc | 1 | $1,800 |
| Asahi Intecc USA, Inc. | 15 | $1,329 |
| Novartis | 38 | $628 |
| Abbott | 9 | $614 |
| Boston Scientific | 14 | $552 |
| Penumbra, Inc. | 5 | $494 |
| Amgen | 22 | $373 |
| Johnson & Johnson | 20 | $306 |
| E.r. Squibb & Sons, L.L.C. | 17 | $297 |
| Teleflex LLC | 6 | $251 |
| Astellas Pharma US Inc | 5 | $249 |
| W. L. Gore & Associates, Inc. | 2 | $204 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 12 | $203 |
| Terumo Medical Corporation | 3 | $182 |
| Cvrx, Inc. | 2 | $166 |
| AstraZeneca | 4 | $149 |
| Sanofi-aventis U.S. LLC | 8 | $147 |
| Esperion Therapeutics, Inc. | 5 | $105 |
| Pfizer | 6 | $105 |
| Chiesi USA, Inc. | 2 | $100 |
| Boehringer Ingelheim | 5 | $81 |
| Kowa Pharmaceuticals America, Inc. | 3 | $66 |
| Cardiovascular Systems Inc. | 4 | $57 |
| Kiniksa Pharmaceuticals International, PLC | 2 | $57 |
| Irhythm Technologies, Inc. | 2 | $52 |
| Amarin Pharma, Inc. | 2 | $30 |
| Itamar Medical Inc | 1 | $29 |
| Davol Inc. | 1 | $27 |
| Regeneron Healthcare Solutions, Inc. | 1 | $23 |
| Merck | 1 | $18 |
| Preventice Services, LLC | 1 | $17 |
| Novo Nordisk | 1 | $17 |
| Bard Peripheral Vascular, Inc. | 1 | $17 |
| GE HealthCare | 1 | $16 |
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.
- Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter$18,258
- Vascular Lithotripsy$7,690
- Serrantor$1,800
- Impella$1,536
- HawkOne$1,423
- IGT D Peripheral$884
- ASAHI PTCA Guide Wire$620
- CoreValve Evolut$432
- CROSSBOSS$264
- Penumbra System$248
- (6571) Eagle Eye$245
- Asahi Peripheral Vascular Wires$223
- GORE CARDIOFORM Septal Occluder$204
- Diamondback Peripheral$180
- Quadra Assura CRT Defibrillator$171
- (0792) MM IVUS Other$150
- Indigo$141
- Glidesheath$140
- Heartrail$140
- TR Band$140
How this compares
$43,892 in reported general payments places this provider in the 85th percentile of 62 interventional cardiology providers in Nevada.
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 interventional cardiology in Henderson
- Jeffrey LevismanHenderson$228K
- Howard BroderHenderson$168K
- Nicholas KalayehHenderson$17K
- Dane JeficHenderson$17K
- Cam ChojiHenderson$8K
- Cres MirandaLas Vegas$660K
- Adrian Mercado-AlamoLas Vegas$118K
- Nayab ZafarLas Vegas$102K
- William ChuLas Vegas$75K
- Chanwit RoongsritongReno$60K
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.