Mark Firestone, MD
Obstetrics & Gynecology · Aventura, FLNPI 1558349563
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $111,773 of the $133,292 with a category attached, or 83.9%. Mayne Pharma Commercial LLC accounts for 81.3% of it on its own, with 25 other manufacturers making up the rest. 2025 is the largest year on record at $62,108, more than ten times the $1,454 reported in 2019. Among obstetrics & gynecology clinicians in FL with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 344 payments — averaging $387.48 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Mayne Pharma Commercial LLC$108K
- AbbVie$21K
- Exeltis, USA Inc.$808
- Astellas Pharma US Inc$562
- Amgen$382
- Therapeuticsmd, Inc.$277
- plus $2K from 20 others
Across 67 payments — averaging $4588.76 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.
- Mylan Inc.$211K
- Mylan Technologies Inc.$63K
- Mitsubishi Tanabe Pharma Development America, Inc.$17K
- Bayer$13K
- Myovant Sciences Inc.$2K
What the payments were for
- Consulting fees$6751%
- Speaking & faculty fees$111,77384%
- Travel & lodging$9,5057%
- Food & beverage$11,0718%
- Education$2690%
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 |
|---|---|---|
| Mayne Pharma Commercial LLC | 111 | $108,400 |
| AbbVie(2 entities) | 84 | $21,016 |
| Exeltis, USA Inc. | 10 | $808 |
| Astellas Pharma US Inc | 12 | $562 |
| Amgen | 8 | $382 |
| Therapeuticsmd, Inc. | 14 | $277 |
| Bayer | 10 | $262 |
| Exact Sciences | 10 | $205 |
| Vertical Pharmaceuticals, LLC | 20 | $201 |
| Coopersurgical, Inc. | 10 | $175 |
| Millicent US Inc | 8 | $160 |
| Evofem Biosciences, Inc. | 7 | $138 |
| Radius Health, Inc. | 5 | $102 |
| Organon | 7 | $94 |
| Pfizer | 5 | $89 |
| Avion Pharmaceuticals | 3 | $70 |
| Hologic Sales And Service, LLC | 2 | $55 |
| Duchesnay USA Incorporated | 4 | $54 |
| Merck | 3 | $49 |
| Sumitomo Pharma America, Inc. | 3 | $47 |
| AMAG Pharmaceuticals, Inc. | 2 | $44 |
| Shield Therapeutics Inc | 2 | $38 |
| Ascend Therapeutics US, LLC | 1 | $19 |
| Biogen | 1 | $19 |
| Lupin Inc. | 1 | $16 |
| Zyla Life Sciences, Inc. | 1 | $12 |
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
$133,292 in reported general payments places this provider in the 95th 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 |
|---|---|---|
| MyrbetriqMirabegron | 19 | $10,627 |
| ImvexxyEstradiol | 31 | $10,622 |
| PremarinEstrogens, Conjugated | 24 | $10,385 |
| Estradiol | 105 | $8,442 |
| Estradiol (Twice Weekly)Estradiol | 32 | $2,471 |
| ProgesteroneProgesterone, Micronized | 88 | $2,167 |
| ValacyclovirValacyclovir Hcl | 25 | $936 |
| Alendronate Sodium | 55 | $713 |
| Raloxifene Hcl | 14 | $539 |
| Terconazole | 13 | $477 |
| Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip | 11 | $277 |
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 |
|---|---|---|
| Astellas Pharma US IncMyrbetriq | $562 | $10,62719 claims |
| Therapeuticsmd, Inc.Imvexxy | $277 | $10,62231 claims |
| PfizerPremarin | $89 | $10,38524 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 95th percentile of 2,438 obstetrics & gynecology providers in Florida.
Other obstetrics & gynecology in Aventura
- 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.