Cassandra J. Lacher, DO
NPI 1467746651ActiveIndividual· Internal Medicine, Medical Oncology· Bourbonnais, IL
Internal Medicine, Medical Oncology (DO) in Bourbonnais, Illinois, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $2,924,569 for 1,873 claims, against $79,710 paid for services in 2024. Celgene Corporation was the largest of 8 companies reporting payments in 2025, $239.61 in all, mostly food and beverage.
Overview
| NPI | 1467746651 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 5, 2011 |
| Last updated in NPPES | Feb 6, 2024 |
| Certified by provider | Feb 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 036163032 | IL |
| Internal Medicine, Medical Oncology | 207RX0202X | 02005519A | IN |
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 - Medical Oncology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 425 |
|---|---|
| Services billed | 1,498 across 13 procedure codes |
| Paid by Medicare | $79,710 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,873 · 3,190 30-day fills |
|---|---|
| Patients | 330 |
| Total drug cost | $2,924,569 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | At Still University of Health Sciences, College of Osteo Med, Kirksville |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Riverside Health SystemWillmington, IL · 199 clinicians
Hospital affiliations
- Good Samaritan HospitalVincennes, IN
- Morris Hospital & Healthcare CentersMorris, IL
- Presence St Marys HospitalKankakee, IL
- Riverside Medical CenterKankakee, IL
Industry payments (Open Payments)
- 2025$239.61 · 11 payments from 8 companies
- 2024$554.34 · 25 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Celgene Corporation | $78.89 | 3 |
| Merck Sharp & Dohme LLC | $33.15 | 2 |
| Jazz Pharmaceuticals Inc. | $29.02 | 1 |
| Abbvie Inc. | $27.80 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $22.03 | 1 |
What the 2025 payments were for
- Food and Beverage$239.61 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other medical oncologists in Bourbonnais
- 1467556837