Karen Estrada-Stephen, MD
Obstetrics & Gynecology · Chandler, AZNPI 1750812590
Payments from drug & device makers
What this record shows
24 manufacturers reported payments, led by Intuitive Surgical at 57.4% of the total. Reporting peaked in 2024 at $1,781 and has fallen 85.7% since, to $255 in 2025.
Across 49 payments — averaging $53.36 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$2K
- AbbVie$204
- Hologic Sales And Service, LLC$161
- Applied Medical Resources Corporation$103
- Mayne Pharma Commercial LLC$82
- Bayer$73
- plus $491 from 18 others
What the payments were for
- Food & beverage$1,11543%
- Education$1,50057%
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 |
|---|---|---|
| Intuitive Surgical | 1 | $1,500 |
| AbbVie | 6 | $204 |
| Hologic Sales And Service, LLC | 8 | $161 |
| Applied Medical Resources Corporation | 1 | $103 |
| Mayne Pharma Commercial LLC | 6 | $82 |
| Bayer | 3 | $73 |
| Sumitomo Pharma America, Inc. | 3 | $69 |
| Astellas Pharma US Inc | 3 | $60 |
| Biogen | 2 | $57 |
| Baxter Healthcare | 1 | $46 |
| Exeltis, USA Inc. | 2 | $28 |
| Aspira Women's Health Inc | 1 | $25 |
| Johnson & Johnson | 1 | $24 |
| Solventum Corporation | 1 | $24 |
| Millicent US Inc | 1 | $23 |
| Myovant Sciences Inc. | 1 | $20 |
| Organon | 1 | $17 |
| Merck | 1 | $15 |
| Gynesonics, Inc. | 1 | $14 |
| Coopersurgical, Inc. | 1 | $14 |
| Avion Pharmaceuticals | 1 | $14 |
| Optumhealth Care Solutions, LLC | 1 | $14 |
| Minerva Surgical, Inc | 1 | $13 |
| Evofem Biosciences, 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.
- DAVINCI XI$1,500
- Orilissa$121
- ORIAHNN$121
- GelPOINT V-Path$103
How this compares
$2,615 in reported general payments places this provider in the 80th percentile of 757 obstetrics & gynecology providers in Arizona.
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 |
|---|---|---|
| Estradiol | 27 | $1,099 |
| Estradiol (Twice Weekly)Estradiol | 12 | $551 |
| ProgesteroneProgesterone, Micronized | 13 | $471 |
Paid to pharmacies, not to this prescriber.
Other obstetrics & gynecology in Chandler
- Richard DemirChandler$46K
- Jordan NeighborsChandler$33K
- Andrew VillaChandler$17K
- Monte SwarupChandler$8K
- Catherine BrainardTucson$302K
- Micah HarrisScottsdale$217K
- Steven NelsonPhoenix$159K
- Ernesto GomezMesa$145K
- Bj HoPhoenix$134K
- Chijioke SoribePhoenix$117K
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.