Katherine Cahill, MD
Allergy & Immunology · Nashville, TNNPI 1518133644
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $64,988 of the $72,785 with a category attached, or 89.3%. 17 manufacturers reported payments, led by Sanofi at 28.5% of the total. 2025 is the largest year on record at $21,529, more than ten times the $727 reported in 2019.
Across 61 payments — averaging $1193.20 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sanofi$21K
- GSK$15K
- Eli Lilly$9K
- AstraZeneca$6K
- Boehringer Ingelheim International GmbH$6K
- Novartis$4K
- plus $13K from 11 others
Across 5 payments — averaging $27,009 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Novo Nordisk$135K
- Amgen$141
What the payments were for
- Consulting fees$64,98889%
- Speaking & faculty fees$2,6904%
- Travel & lodging$3,6525%
- Food & beverage$1,4342%
- Education$210%
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 |
|---|---|---|
| Sanofi | 16 | $20,719 |
| GSK | 7 | $14,646 |
| Eli Lilly | 6 | $9,191 |
| AstraZeneca | 3 | $5,907 |
| Boehringer Ingelheim International GmbH | 11 | $5,678 |
| Novartis | 4 | $3,940 |
| Regeneron | 2 | $3,720 |
| Genentech, Inc. | 1 | $2,220 |
| Sanofi US Services Inc. | 1 | $1,800 |
| Sanofi Pasteur Inc. | 1 | $1,683 |
| Blueprint Medicines Corporation | 1 | $1,530 |
| Astrazeneca AB | 2 | $806 |
| Deciphera Pharmaceuticals Inc. | 1 | $600 |
| Intuitive Surgical | 2 | $224 |
| Genentech USA, Inc. | 1 | $66 |
| Regeneron Healthcare Solutions, Inc. | 1 | $35 |
| Sanofi-aventis U.S. LLC | 1 | $21 |
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.
How this compares
$72,785 in reported general payments places this provider in the 85th 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Dupixent PenDupilumab | 37 | $127,910 |
| Dupixent SyringeDupilumab | 24 | $86,713 |
| Fasenra PenBenralizumab | 11 | $56,805 |
| Zileuton ErZileuton | 14 | $22,361 |
| Arnuity ElliptaFluticasone Furoate | 13 | $3,308 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| GSKArnuity Ellipta | $14,646 | $3,30813 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 85th percentile of 79 allergy & immunology providers in Tennessee.
Other allergy & immunology in Nashville
- John FahrenholzNashville$124K
- Derek DaminNashville$44K
- Bruce WolfNashville$15K
- Robert ValetNashville$5K
- Grace KooNashville$3K
- Nicholas KolinskyKnoxville$472K
- Tidence PrinceMaryville$269K
- Tammy Heinly McCulleyGermantown$165K
- Phillip LiebermanMemphis$131K
- Marc CromieChattanooga$106K
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.