Robert Drenchko, DO
Obstetrics & Gynecology · Largo, FLNPI 1396179073
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $7,151 of the $8,825 with a category attached, or 81.0%. Organon accounts for 83.4% of it on its own, with 28 other manufacturers making up the rest. Reporting peaked in 2023 at $4,596 and has fallen 95.3% since, to $214 in 2025. Among obstetrics & gynecology clinicians in FL with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 108 payments — averaging $81.71 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Organon$7K
- Therapeuticsmd, Inc.$172
- Amgen$132
- Bayer$115
- Daiichi Sankyo Inc.$111
- Astellas Pharma US Inc$103
- plus $836 from 23 others
What the payments were for
- Speaking & faculty fees$7,15181%
- Food & beverage$1,67419%
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 |
|---|---|---|
| Organon | 35 | $7,356 |
| Therapeuticsmd, Inc. | 12 | $172 |
| Amgen | 2 | $132 |
| Bayer | 6 | $115 |
| Daiichi Sankyo Inc. | 6 | $111 |
| Astellas Pharma US Inc | 6 | $103 |
| Gynesonics, Inc. | 2 | $98 |
| Exeltis, USA Inc. | 4 | $77 |
| Sumitomo Pharma America, Inc. | 3 | $76 |
| Hologic Sales And Service, LLC | 3 | $58 |
| AbbVie | 4 | $58 |
| Pfizer | 3 | $54 |
| Myriad Women's Health, Inc. | 2 | $52 |
| Exact Sciences | 2 | $38 |
| Roche Diagnostics Corporation | 2 | $35 |
| Agios Pharmaceuticals, Inc. | 1 | $33 |
| Mayne Pharma Commercial LLC | 2 | $33 |
| BD | 1 | $30 |
| Millicent US Inc | 1 | $24 |
| Merck | 2 | $23 |
| Medtronic | 1 | $22 |
| Sage Therapeutics, LLC | 1 | $22 |
| Shield Therapeutics Inc | 1 | $17 |
| Coopersurgical, Inc. | 1 | $16 |
| Optumhealth Care Solutions, LLC | 1 | $16 |
| Boston Scientific | 1 | $14 |
| Baxter Healthcare | 1 | $14 |
| AstraZeneca | 1 | $13 |
| Mylan Pharmaceuticals Inc. | 1 | $13 |
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
$8,825 in reported general payments places this provider in the 90th percentile of 2,438 obstetrics & gynecology providers in Florida.
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 |
|---|---|---|
| Metronidazole | 11 | $20 |
Paid to pharmacies, not to this prescriber.
Other obstetrics & gynecology in Largo
- Steven McCarusCelebration$2.3M
- Elliot CazesTampa$725K
- Charles BloomWinter Park$652K
- Jay CohenPlantation$556K
- Omar ZwainWinter Park$531K
- Keith AquaWellington$473K
- Jeffrey KotzenPalm Beach Gardens$413K
- Glenn BankertCrestview$388K
- Erica StockwellCelebration$321K
- Scott JordanFort Lauderdale$316K
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.