Sigrid Gardner Williams, M.D.
NPI 1033485511ActiveIndividual· Obstetrics & Gynecology· Tucson, AZ
Obstetrics & Gynecology (M.D.) in Tucson, Arizona, trained at University of Arizona College of Medicine (class of 2012). 20 Medicare patients in 2024, $3,826 paid; nearly all of their 63 Part D prescriptions were generic (97%). Biogen, Inc. was the largest of 3 companies reporting payments in 2025, $87.43 in all, mostly food and beverage.
Overview
| NPI | 1033485511 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 28, 2012 |
| Last updated in NPPES | Oct 3, 2024 |
| Certified by provider | Oct 3, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 57253 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 20 |
|---|---|
| Services billed | 45 across 12 procedure codes |
| Paid by Medicare | $3,826 |
Part D prescriptions in 2024
| Prescriptions (claims) | 63 · 97 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $2,215 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Arizona College of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Genesis OB GYN PLLCOro Valley, AZ · 110 clinicians
Industry payments (Open Payments)
- 2025$87.43 · 4 payments from 3 companies
- 2024$184.80 · 8 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biogen, Inc. | $42.43 | 2 |
| Astellas Pharma US Inc | $25.00 | 1 |
| Hologic Sales and Service, LLC | $20.00 | 1 |
What the 2025 payments were for
- Food and Beverage$87.43 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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