Cassandra Lynn Williamson, PA
NPI 1457565392ActiveIndividual· Physician Assistant· Dayton, OH
Physician Assistant (PA) with Premier Health Specialists Inc and 1 other group, practicing in Dayton, Ohio. Medicare paid $25,892 for services to 228 patients in 2024. Abbvie Inc. was the largest of 17 companies reporting payments in 2025, $1,979 in all, mostly food and beverage. Lists Kettering Health Dayton and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1457565392 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | May 10, 2007 |
| Last updated in NPPES | Dec 9, 2019 |
| Certified by provider | Dec 9, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 50.002157 | OH |
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 (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 228 |
|---|---|
| Services billed | 381 across 7 procedure codes |
| Paid by Medicare | $25,892 |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- Premier Health Specialists IncDayton, OH · 580 clinicians
- Digestive Specialists IncDayton, OH · 25 clinicians
Hospital affiliations
- Kettering Health DaytonDayton, OH
- Kettering Health Main CampusKettering, OH
- Kettering Health MiamisburgMiamisburg, OH
- Miami Valley HospitalDayton, OH
- Soin Medical CenterBeaver Creek, OH
Industry payments (Open Payments)
- 2025$1,979 · 92 payments from 17 companies
- 2024$1,608 · 94 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $686.50 | 31 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $387.30 | 25 |
| Janssen Biotech, Inc. | $155.46 | 4 |
| Genzyme Corporation | $144.02 | 3 |
| Ipsen Biopharmaceuticals, Inc | $115.38 | 6 |
What the 2025 payments were for
- Food and Beverage$1,880 · 91 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 251 physician assistants in Dayton · All physician assistants in Ohio