Kassandra Kay Williams, PA-C
NPI 1992111629ActiveIndividual· Physician Assistant, Medical· Tecumseh, MI
Physician Assistant, Medical (PA-C) with Promedica Central Corporation of Michigan, practicing in Tecumseh, Michigan. Their prescriptions cost Medicare Part D more than their services did: $41,625 for 131 claims, against $1,922 paid for services in 2024. Sage Therapeutics, LLC was the largest of 9 companies reporting payments in 2025, $436.50 in all, mostly food and beverage. Lists Promedica Charles and Virginia Hickman Hospital as a hospital affiliation.
Overview
| NPI | 1992111629 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Jul 2, 2014 |
| Last updated in NPPES | Apr 1, 2026 |
| Certified by provider | Apr 1, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 5601009982 | 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 - Physician Assistant (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 22 |
|---|---|
| Services billed | 38 across 10 procedure codes |
| Paid by Medicare | $1,922 |
Part D prescriptions in 2024
| Prescriptions (claims) | 131 · 174 30-day fills |
|---|---|
| Patients | 54 |
| Total drug cost | $41,625 |
| Generic share | 68% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Promedica Central Corporation of MichiganAdrian, MI · 111 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$436.50 · 18 payments from 9 companies
- 2024$457.87 · 23 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sage Therapeutics, LLC | $113.38 | 3 |
| Sumitomo Pharma America, Inc. | $105.45 | 4 |
| Lilly USA, LLC | $86.18 | 4 |
| Organon LLC | $40.13 | 2 |
| Pfizer Inc. | $20.78 | 1 |
What the 2025 payments were for
- Food and Beverage$436.50 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Tecumseh
- 1386305878