Calvin Defenbau, NP
Family · Gainesville, GANPI 1265927362
Payments from drug & device makers
Across 29 payments — averaging $19.32 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Corcept Therapeutics$100
- Otsuka America Pharmaceutical, Inc.$79
- Inspire Medical Systems, Inc.$64
- GSK$60
- AbbVie$40
- Aytu Biopharma, Inc.$39
- plus $177 from 8 others
What the payments were for
- Food & beverage$560100%
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 |
|---|---|---|
| Corcept Therapeutics | 5 | $100 |
| Otsuka America Pharmaceutical, Inc. | 4 | $79 |
| Inspire Medical Systems, Inc. | 1 | $64 |
| GSK | 3 | $60 |
| AbbVie | 2 | $40 |
| Aytu Biopharma, Inc. | 1 | $39 |
| AstraZeneca | 2 | $31 |
| Eisai Inc. | 2 | $27 |
| Axsome Therapeutics, Inc. | 1 | $23 |
| Amarin Pharma, Inc. | 1 | $22 |
| Biohaven Pharmaceuticals, Inc. | 1 | $20 |
| Edwards Lifesciences | 1 | $19 |
| Genentech USA, Inc. | 4 | $18 |
| Sanofi Pasteur Inc. | 1 | $16 |
How this compares
$560 in reported general payments places this provider in the 55th percentile of 6,258 family providers in Georgia.
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 |
|---|---|---|
| Albuterol Sulfate HfaAlbuterol Sulfate | 41 | $862 |
| CefuroximeCefuroxime Axetil | 43 | $579 |
| Doxycycline Hyclate | 93 | $546 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 46 | $358 |
| Fluticasone Propionate | 34 | $254 |
| Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst | 21 | $170 |
| Methocarbamol | 25 | $163 |
| Mupirocin | 21 | $150 |
| Diclofenac Sodium | 25 | $122 |
| Cephalexin | 27 | $118 |
| Prednisone | 93 | $92 |
| Montelukast Sodium | 19 | $87 |
| Amoxicillin | 19 | $71 |
| Azithromycin | 17 | $61 |
| Ciprofloxacin Hcl | 13 | $59 |
Paid to pharmacies, not to this prescriber.
Other family in Gainesville
- Kristina JamesGainesville$16K
- Leigh DayGainesville$16K
- Jeanette PirkleGainesville$15K
- Jennifer ButlerGainesville$14K
- Allie McAllisterMarietta$299K
- Tonita WashingtonLawrenceville$153K
- Erin HenryLawrenceville$135K
- Trisha RomanPeachtree City$134K
- Lori ReedMarietta$106K
- Julia BranchCumming$102K
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.