Gwen Allen, MD
Obstetrics & Gynecology · Gardena, CANPI 1306942909
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $2,004 of the $2,396 with a category attached, or 83.6%. It is spread thinly across 28 manufacturers, the largest accounting for just 18.8% — the pattern of someone who eats at a lot of different presentations.
Across 93 payments — averaging $25.76 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$451
- Applied Medical Resources Corporation$300
- Astellas Pharma US Inc$252
- Sumitomo Pharma America, Inc.$207
- Merck$131
- Myovant Sciences Inc.$93
- plus $961 from 22 others
Across 19 payments — averaging $8446.55 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.
- Sumitomo Pharma America, Inc.$116K
- Abbott$44K
What the payments were for
- Travel & lodging$25911%
- Food & beverage$2,00484%
- Education$1336%
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 |
|---|---|---|
| AbbVie(2 entities) | 18 | $451 |
| Applied Medical Resources Corporation | 2 | $300 |
| Astellas Pharma US Inc | 10 | $252 |
| Sumitomo Pharma America, Inc. | 9 | $207 |
| Merck | 7 | $131 |
| Myovant Sciences Inc. | 5 | $93 |
| Shield Therapeutics Inc | 4 | $88 |
| Baxter Healthcare | 2 | $83 |
| Hologic Sales And Service, LLC | 4 | $83 |
| Sage Therapeutics, LLC | 3 | $79 |
| Intuitive Surgical | 1 | $70 |
| BD | 2 | $66 |
| Exeltis, USA Inc. | 3 | $64 |
| Gilead | 2 | $55 |
| Coopersurgical, Inc. | 3 | $51 |
| Bayer | 2 | $43 |
| AMAG Pharmaceuticals, Inc. | 2 | $42 |
| Mayne Pharma Commercial LLC | 4 | $36 |
| Roche Diagnostics Corporation | 1 | $24 |
| Johnson & Johnson | 1 | $24 |
| Organon | 1 | $23 |
| Pfizer | 1 | $23 |
| Mylan Pharmaceuticals Inc. | 1 | $21 |
| Octapharma USA, Inc. | 1 | $20 |
| Smith+Nephew | 1 | $18 |
| Aspira Women's Health Inc | 1 | $18 |
| Lupin Inc. | 1 | $16 |
| Medicem Inc. | 1 | $16 |
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.
- GelPOINT V-Path$259
How this compares
$2,396 in reported general payments places this provider in the 80th percentile of 3,784 obstetrics & gynecology providers in California.
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.
Other obstetrics & gynecology in Gardena
- Steve YuNorthridge$964K
- Samir HageRedlands$640K
- Malcolm MunroLos Angeles$609K
- Michael KrychmanCosta Mesa$547K
- Anita NelsonTorrance$530K
- Jan SegnitzSan Jose$511K
- Risa KaganBerkeley$497K
- Michael GreenOxnard$424K
- Howard SalvaySanta Cruz$421K
- Marc WinterLaguna Hills$399K
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.