Karthik Krishnan, MD
Allergy & Immunology · Maryville, TNNPI 1306956586
Payments from drug & device makers
Across 610 payments — averaging $671.80 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- GSK$221K
- Amgen$77K
- AstraZeneca$67K
- Teva Pharmaceuticals USA, Inc.$39K
- Regeneron Healthcare Solutions, Inc.$2K
- Genentech USA, Inc.$899
- plus $4K from 25 others
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 |
|---|---|---|
| GSK | 185 | $220,565 |
| Amgen | 16 | $77,197 |
| AstraZeneca | 78 | $66,567 |
| Teva Pharmaceuticals USA, Inc. | 19 | $39,031 |
| Regeneron Healthcare Solutions, Inc. | 74 | $1,569 |
| Genentech USA, Inc. | 46 | $899 |
| CSL Behring | 38 | $840 |
| Sanofi | 33 | $718 |
| Takeda Pharmaceuticals U.S.A., Inc. | 25 | $572 |
| Grifols USA, LLC | 14 | $291 |
| Kaleo, Inc. | 15 | $269 |
| Boehringer Ingelheim | 14 | $254 |
| Novartis | 8 | $159 |
| Hospira, Inc. | 6 | $122 |
| Shire North American Group Inc | 7 | $115 |
| ARS Pharmaceuticals Operations, Inc. | 4 | $92 |
| Pfizer | 5 | $85 |
| Biocryst US Sales Co., LLC | 4 | $83 |
| Optinose US, Inc. | 3 | $60 |
| Pharming Healthcare, Inc. | 3 | $44 |
| Ionis Pharmaceuticals, Inc. | 2 | $42 |
| Lilly USA, LLC | 2 | $40 |
| Tersera Therapeutics LLC | 1 | $29 |
| Incyte Corporation | 1 | $28 |
| Cycle Pharmaceuticals Inc | 1 | $27 |
| ADMA Biomanufacturing LLC | 1 | $25 |
| Merck | 1 | $19 |
| Blueprint Medicines Corporation | 1 | $17 |
| Hikma Pharmaceuticals USA | 1 | $15 |
| Circassia Inc. | 1 | $11 |
| Mylan Specialty L.p. | 1 | $11 |
How this compares
$409,796 in reported general payments places this provider in the 95th percentile of 79 allergy & immunology 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.
Other allergy & immunology in Maryville
- Tidence PrinceMaryville$303K
- Wilson RobinsonMaryville$7K
- Nicholas KolinskyKnoxville$472K
- Jay LiebermanMemphis$270K
- Katherine CahillNashville$208K
- Tammy Heinly McCulleyGermantown$165K
- Phillip LiebermanMemphis$131K
- John FahrenholzNashville$124K
- Marc CromieChattanooga$106K
- Reena PatelMemphis$101K
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.