Heather Diann Knowles, APN-BC ACNP
NPI 1922244045ActiveIndividual· Nurse Practitioner, Acute Care· Mount Vernon, IL
Nurse Practitioner, Acute Care (APN-BC ACNP) with Washington County Hospital District and 1 other group, practicing in Mount Vernon, Illinois. Their prescriptions cost Medicare Part D more than their services did: $292,009 for 2,149 claims, against $67,340 paid for services in 2024. Autolus Inc was the largest of 18 companies reporting payments in 2025, $2,300 in all, mostly honoraria. Lists Good Samaritan Regional Hlth Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1922244045 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APN-BC ACNP |
| Sole proprietor | No |
| NPI issued | Dec 18, 2008 |
| Last updated in NPPES | Mar 12, 2026 |
| Certified by provider | Mar 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | 209007400 | IL |
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 - Nurse Practitioner (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 628 |
|---|---|
| Services billed | 2,796 across 26 procedure codes |
| Paid by Medicare | $67,340 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,149 · 4,537 30-day fills |
|---|---|
| Patients | 490 |
| Total drug cost | $292,009 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Washington County Hospital DistrictNashville, IL · 22 clinicians
- Advanced Urologic Surgeons PCMount Vernon, IL · 2 clinicians
Hospital affiliations
- Good Samaritan Regional Hlth CenterMount Vernon, IL
- Pinckneyville Community HospitalPinckneyville, IL
- Salem Township HospitalSalem, IL
- Ssm Health St Mary's Hospital -CentraliaCentralia, IL
- Washington County HospitalNashville, IL
Industry payments (Open Payments)
- 2025$2,300 · 49 payments from 18 companies
- 2024$945.02 · 52 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Autolus Inc | $1,295 | 1 |
| Janssen Biotech, Inc. | $248.10 | 10 |
| Pfizer Inc. | $91.31 | 5 |
| Novartis Pharmaceuticals Corporation | $90.22 | 4 |
| Bayer Healthcare Pharmaceuticals Inc. | $73.65 | 4 |
What the 2025 payments were for
- Honoraria$1,295 · 1 payment
- Food and Beverage$920.33 · 47 payments
- Education$84.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records