Rex Mabey, MD
Obstetrics & Gynecology · Las Vegas, NVNPI 1720048549
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $3,130 of the $3,742 with a category attached, or 83.6%. Myovant Sciences Inc. accounts for 83.6% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2021 at $3,130 and has fallen 93.7% since, to $196 in 2024.
Across 8 payments — averaging $467.74 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Myovant Sciences Inc.$3K
- Hologic Sales And Service, LLC$219
- Exeltis, USA Inc.$142
- AMAG Pharmaceuticals, Inc.$122
- Astellas Pharma US Inc$115
- AbbVie$14
Across 286 payments — averaging $10,285 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.
- Abbott$1.1M
- Sebela Pharmaceuticals Inc.$545K
- Exeltis, USA Inc.$418K
- Sebela Women's Health Inc.$337K
- AbbVie$269K
- Medicines360$198K
- plus $113K from 5 others
What the payments were for
- Consulting fees$3,13084%
- Food & beverage$61216%
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 |
|---|---|---|
| Myovant Sciences Inc. | 2 | $3,130 |
| Hologic Sales And Service, LLC | 2 | $219 |
| Exeltis, USA Inc. | 1 | $142 |
| AMAG Pharmaceuticals, Inc. | 1 | $122 |
| Astellas Pharma US Inc | 1 | $115 |
| AbbVie | 1 | $14 |
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
$3,742 in reported general payments places this provider in the 80th percentile of 308 obstetrics & gynecology providers in Nevada.
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 |
|---|---|---|
| PremarinEstrogens, Conjugated | 17 | $7,831 |
| Estradiol | 129 | $3,216 |
| ProgesteroneProgesterone, Micronized | 26 | $1,546 |
| Estradiol (Twice Weekly)Estradiol | 14 | $1,449 |
| Clobetasol Propionate | 22 | $272 |
| Hydrocortisone | 12 | $268 |
| Medroxyprogesterone Acetate | 26 | $233 |
| Fluconazole | 46 | $225 |
| Acyclovir | 17 | $192 |
| Ciprofloxacin Hcl | 31 | $135 |
| Zolpidem Tartrate | 14 | $124 |
| Sumatriptan Succinate | 16 | $111 |
Paid to pharmacies, not to this prescriber.
Other obstetrics & gynecology in Las Vegas
- Darin SwainstonLas Vegas$713K
- Christina KushnirLas Vegas$502K
- Lamarr TylerLas Vegas$170K
- Ralph VennartLas Vegas$144K
- Kenneth VolkerLas Vegas$126K
- Navkaran SinghLas Vegas$104K
- Sunwook KimLas Vegas$94K
- Luis Lopez BenitezLas Vegas$89K
- Linda TranLas Vegas$72K
- Raul Romero JosephLas Vegas$61K
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.