Aaron Kromhout, MD
Obstetrics · San Luis Obispo, CANPI 1093717472
Payments from drug & device makers
Across 19 payments — averaging $21.13 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Bayer$139
- Astellas Pharma US Inc$71
- AbbVie$48
- Sage Therapeutics, LLC$32
- Pfizer$27
- Exact Sciences$20
- plus $66 from 4 others
What the payments were for
- Food & beverage$402100%
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 |
|---|---|---|
| Bayer | 6 | $139 |
| Astellas Pharma US Inc | 3 | $71 |
| AbbVie | 2 | $48 |
| Sage Therapeutics, LLC | 2 | $32 |
| Pfizer | 1 | $27 |
| Exact Sciences | 1 | $20 |
| Therapeuticsmd, Inc. | 1 | $20 |
| Organon | 1 | $16 |
| Sumitomo Pharma America, Inc. | 1 | $15 |
| Novo Nordisk | 1 | $15 |
How this compares
$402 in reported general payments places this provider in the 40th percentile of 119 obstetrics 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Estradiol | 73 | $6,992 |
| YuvafemEstradiol | 25 | $4,828 |
| ProgesteroneProgesterone, Micronized | 138 | $4,571 |
| DottiEstradiol | 18 | $2,641 |
| Estradiol (Twice Weekly)Estradiol | 35 | $2,429 |
| LyllanaEstradiol | 14 | $2,182 |
| VagifemEstradiol | 11 | $1,800 |
| ValacyclovirValacyclovir Hcl | 17 | $439 |
Paid to pharmacies, not to this prescriber.
Other obstetrics in San Luis Obispo
- Dena TilleySan Luis Obispo$4K
- Peter WangGarden Grove$428K
- Craig SafferSan Diego$164K
- Angela ChenLos Angeles$64K
- Douglas Woelkersla Jolla$58K
- Richard FriedmanBurbank$18K
- Jennifer ByerSanta Rosa$17K
- Omar AzizEl Centro$14K
- Frederica LofquistSan Francisco$14K
- Caitlyn PainterSan Francisco$10K
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.