Michael Callahan, MD
Otolaryngic Allergy · Gainesville, GANPI 1063564243
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $2,117 of the $2,725 with a category attached, or 77.7%. 12 manufacturers reported payments, led by Stryker at 49.8% of the total.
Across 52 payments — averaging $52.41 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$1K
- Aerin Medical Inc.$330
- Optinose US, Inc.$272
- Regeneron Healthcare Solutions, Inc.$229
- Sanofi$165
- Integra Lifesciences Corporation$150
- plus $224 from 6 others
What the payments were for
- Travel & lodging$60822%
- Food & beverage$2,11778%
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 |
|---|---|---|
| Stryker | 11 | $1,357 |
| Aerin Medical Inc. | 5 | $330 |
| Optinose US, Inc. | 14 | $272 |
| Regeneron Healthcare Solutions, Inc. | 10 | $229 |
| Sanofi | 5 | $165 |
| Integra Lifesciences Corporation | 1 | $150 |
| Inspire Medical Systems, Inc. | 1 | $72 |
| Intersect ENT, Inc. | 1 | $68 |
| Tactile Systems Technology Inc | 1 | $37 |
| Merck | 1 | $25 |
| GSK | 1 | $15 |
| Phathom Pharmaceuticals, Inc. | 1 | $7 |
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.
- SCOPIS ENT$716
- XPRESS ENT DILATION SYSTEM$357
- FIAGON NAVIGATION UNIT$161
- Acclarent Aera$150
- Inspira Air$150
- RELIEVA SPINPLUS NAV$150
- TruDi Probe$150
- VIVAER STYLUS$147
- RHINAER STYLUS$147
How this compares
Too few otolaryngic allergy providers in Georgiato 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 |
|---|---|---|
| Ipratropium Bromide | 111 | $7,107 |
| Azelastine Hcl | 64 | $2,443 |
| Ciprofloxacin-DexamethasoneCiprofloxacin Hcl/Dexameth | 11 | $1,220 |
| Tobramycin-DexamethasoneTobramycin/Dexamethasone | 25 | $1,043 |
| Fluticasone Propionate | 76 | $1,010 |
| Ofloxacin | 32 | $790 |
| Mometasone Furoate | 28 | $773 |
| Famotidine | 40 | $305 |
| Doxycycline Monohydrate | 17 | $225 |
| Mupirocin | 15 | $77 |
| Cephalexin | 11 | $73 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 11 | $59 |
| Ondansetron OdtOndansetron | 13 | $53 |
| Prednisone | 17 | $30 |
Paid to pharmacies, not to this prescriber.
Other otolaryngic allergy in Gainesville
- Sarah WiseAtlanta$77K
- John DelgaudioAtlanta$49K
- David DillardAthens$9K
- Michael SylvesterFayetteville$5K
- David OliverSavannah$5K
- Thomas EdwardsDecatur$4K
- Daniel SpielmanAtlanta$4K
- Kody BolkAtlanta$2K
- Emily BarrowAtlanta$1K
- Anthony BotrosAtlanta$820
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.