Annette Siewert, MD
Obstetrics & Gynecology · Sioux Falls, SDNPI 1376716647
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 17 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 12 manufacturers, the largest accounting for just 23.1% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $131, 2.0 times the $65 reported in 2019. That places this record below the midpoint for obstetrics & gynecology clinicians in SD, where the typical reported total is $271.
Across 17 payments — averaging $15.97 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Sage Therapeutics, LLC$63
- Hologic Sales And Service, LLC$42
- AbbVie$28
- KCI USA, Inc.$24
- Sumitomo Pharma America, Inc.$23
- Astellas Pharma US Inc$19
- plus $73 from 6 others
Across 1 payment — averaging $13,760 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.
- GSK$14K
What the payments were for
- Food & beverage$272100%
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 |
|---|---|---|
| Sage Therapeutics, LLC | 4 | $63 |
| Hologic Sales And Service, LLC | 2 | $42 |
| AbbVie | 2 | $28 |
| KCI USA, Inc. | 1 | $24 |
| Sumitomo Pharma America, Inc. | 1 | $23 |
| Astellas Pharma US Inc | 1 | $19 |
| Supernus Pharmaceuticals, Inc. | 1 | $16 |
| Mallinckrodt Enterprises LLC | 1 | $14 |
| Lupin Inc. | 1 | $12 |
| Teva Pharmaceuticals USA, Inc. | 1 | $12 |
| Merck | 1 | $12 |
| Intuitive Surgical | 1 | $7 |
How this compares
$272 in reported general payments places this provider in the 50th percentile of 96 obstetrics & gynecology providers in South Dakota.
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 Sioux Falls
- Ashley BriggsSioux Falls$15K
- Molly UhingSioux Falls$6K
- Abrea RoarkSioux Falls$5K
- Catherine SchiltzSioux Falls$3K
- Jessica PearsonSioux Falls$1K
- Emily WintertonSioux Falls$1K
- Kaylee RungeSioux Falls$1K
- Kelly TolleySioux Falls$990
- Jeanne Hassebroek-JohnsonSioux Falls$851
- Christen DukeSioux Falls$843
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.