Sian West-Porter, D.O.
NPI 1821479130ActiveIndividual· Obstetrics & Gynecology· Kalamazoo, MI
Obstetrics & Gynecology (D.O.) with Bronson Methodist Hospital, practicing in Kalamazoo, Michigan. Their prescriptions cost Medicare Part D more than their services did: $3,046 for 73 claims, against $1,035 paid for services in 2024. Biogen, Inc. was the largest of 5 companies reporting payments in 2025, $107.30 in all, mostly food and beverage. Lists Bronson Methodist Hospital as a hospital affiliation.
Overview
| NPI | 1821479130 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 11, 2015 |
| Last updated in NPPES | Mar 13, 2023 |
| Certified by provider | Mar 13, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 5101021924 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 12 |
|---|---|
| Services billed | 16 across 4 procedure codes |
| Paid by Medicare | $1,035 |
Part D prescriptions in 2024
| Prescriptions (claims) | 73 · 143 30-day fills |
|---|---|
| Patients | 31 |
| Total drug cost | $3,046 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Bronson Methodist HospitalKalamazoo, MI · 729 clinicians
Hospital affiliation
- Bronson Methodist HospitalKalamazoo, MI
Industry payments (Open Payments)
- 2025$107.30 · 5 payments from 5 companies
- 2024$106.54 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biogen, Inc. | $29.90 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $28.12 | 1 |
| Coopersurgical, Inc. | $19.04 | 1 |
| Ethicon US, LLC | $15.79 | 1 |
| Meditrina | $14.45 | 1 |
What the 2025 payments were for
- Food and Beverage$107.30 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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