Mark Hathaway
Obstetrics & Gynecology · Washington, DCNPI 1720068133
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $153,938 of the $179,560 with a category attached, or 85.7%. 6 manufacturers reported payments, led by Organon at 59.7% of the total. Reporting peaked in 2024 at $44,214 and has fallen 52.0% since, to $21,244 in 2025. Among obstetrics & gynecology clinicians in DC 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 331 payments — averaging $542.48 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Organon$107K
- Bayer$32K
- Merck$22K
- Coopersurgical, Inc.$9K
- Afaxys, Inc.$6K
- Medicines360$3K
What the payments were for
- Consulting fees$16,3379%
- Speaking & faculty fees$153,93886%
- Travel & lodging$7,3564%
- Food & beverage$1,8811%
- Education$480%
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 | 209 | $107,189 |
| Bayer | 50 | $31,517 |
| Merck | 46 | $22,397 |
| Coopersurgical, Inc. | 9 | $9,410 |
| Afaxys, Inc. | 6 | $5,963 |
| Medicines360 | 11 | $3,086 |
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
$179,560 in reported general payments places this provider in the 95th percentile of 195 obstetrics & gynecology providers in District of Columbia.
See all obstetrics & gynecology providers in District of Columbia →
Other obstetrics & gynecology in Washington
- Renuka Darolia AdelizziWashington$72K
- Jovana TavcarWashington$5K
- Rachel ScottWashington$5K
- Jamila PerrittWashington$5K
- Stephanie HackWashington$4K
- Nicholas HazenWashington$4K
- Serina FloydWashington$4K
- Amr MadkourWashington$4K
- Peng YeWashington$3K
- Sarah SwartzWashington$3K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.