Michael Derrick, MD
Pediatric Allergy/Immunology · Murfreesboro, TNNPI 1275828717
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 97.0% of the total across 120 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 20 manufacturers reported payments, led by Sanofi at 26.2% of the total. 2025 is the largest year on record at $968, 4.3 times the $225 reported in 2022.
Across 120 payments — averaging $21.67 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sanofi$682
- AstraZeneca$536
- ARS Pharmaceuticals Operations, Inc.$245
- GSK$235
- Novartis$164
- Grifols USA, LLC$141
- plus $597 from 14 others
What the payments were for
- Food & beverage$2,52297%
- Education$793%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 | 24 | $682 |
| AstraZeneca | 25 | $536 |
| ARS Pharmaceuticals Operations, Inc. | 11 | $245 |
| GSK | 17 | $235 |
| Novartis | 8 | $164 |
| Grifols USA, LLC | 7 | $141 |
| Regeneron Healthcare Solutions, Inc. | 4 | $119 |
| Takeda Pharmaceuticals U.S.A., Inc. | 5 | $112 |
| Octapharma USA, Inc. | 2 | $49 |
| Genentech USA, Inc. | 3 | $46 |
| Kaleo, Inc. | 2 | $41 |
| CSL Behring | 2 | $41 |
| Phadia US Inc. | 2 | $40 |
| Pfizer | 2 | $40 |
| Biocryst US Sales Co., LLC | 1 | $22 |
| Celltrion USA Inc. | 1 | $21 |
| Merck | 1 | $18 |
| Jubilant Hollisterstier LLC | 1 | $17 |
| Hikma Pharmaceuticals USA | 1 | $17 |
| Alk-abello, Inc | 1 | $14 |
How this compares
Too few pediatric allergy/immunology providers in Tennesseeto place this figure against a meaningful peer group, so we don't.
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 |
|---|---|---|
| Epinephrine | 19 | $4,038 |
| Azelastine Hcl | 24 | $913 |
| Fluticasone Propionate | 27 | $329 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 17 | $234 |
| Ipratropium Bromide | 13 | $160 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 12 | $124 |
| Famotidine | 14 | $119 |
| Prednisone | 14 | $40 |
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 |
|---|---|---|
| Hikma Pharmaceuticals USAEpinephrine | $17 | $4,03819 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. There are too few pediatric allergy/immunology providers in Tennesseeon file to place this against a meaningful peer group, so we don't.
Other pediatric allergy/immunology in Murfreesboro
- Leonard BacharierNashville$1.2M
- Eva MillerNashville$141K
- Donna HummellNashville$16K
- Rachel RobisonNashville$14K
- Christie MichaelMemphis$13K
- Stacy DorrisNashville$6K
- Annette CarlisleMemphis$1K
- Ashley EscueMemphis$493
- Catherine HammondMemphis$455
- Yasmin KhanNashville$117
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.