Cassandra Slemmer, PA-C
NPI 1639604432ActiveIndividual· Physician Assistant· Wenatchee, WA
Physician Assistant (PA-C) with Central Washington Health Services Association, practicing in Wenatchee, Washington. Their prescriptions cost Medicare Part D more than their services did: $161,021 for 384 claims, against $7,558 paid for services in 2024. Janssen Biotech, Inc. reported $25.31 in payments in 2025, mostly food and beverage. Lists Confluence Health Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1639604432 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Apr 29, 2017 |
| Last updated in NPPES | Dec 14, 2023 |
| Certified by provider | Dec 14, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA60761023 | WA |
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 (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 100 |
|---|---|
| Services billed | 134 across 13 procedure codes |
| Paid by Medicare | $7,558 |
Part D prescriptions in 2024
| Prescriptions (claims) | 384 · 616 30-day fills |
|---|---|
| Patients | 197 |
| Total drug cost | $161,021 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Central Washington Health Services AssociationWenatchee, WA · 721 clinicians
Hospital affiliations
- Confluence Health HospitalWenatchee, WA
- Mid Valley Hospital & ClinicOmak, WA
Industry payments (Open Payments)
- 2025$25.31 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $25.31 | 1 |
What the 2025 payments were for
- Food and Beverage$25.31 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 70 physician assistants in Wenatchee · All physician assistants in Washington