Quick answers
- Which hospitals does Heather D. Knowles work at?
- Medicare's official clinician data lists Heather D. Knowles at 5 hospitals: Good Samaritan Regional Hlth Center, Pinckneyville Community Hospital, Salem Township Hospital, SSM Health St Mary's Hospital -Centralia and Washington County Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Heather D. Knowles see patients?
- Medicare's clinician data lists 3 practice locations, including Mount Vernon, IL and Nashville, IL. Call before your visit to confirm the address.
- What is Heather D. Knowles's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Heather D. Knowles accept Medicare assignment?
- Yes. Medicare's clinician data says Heather D. Knowles accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Heather D. Knowles?
- (618) 244-4060, as listed in official Medicare / NPI Registry data.
- What is Heather D. Knowles's NPI number?
- 1922244045. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Heather D. Knowles works
Medicare's Facility Affiliation Data lists Heather D. Knowles at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Good Samaritan Regional Hlth CenterMount Vernon, IL · Acute Care Hospital · CCN 140046
- Pinckneyville Community HospitalPinckneyville, IL · Critical Access Hospital · CCN 141307
- Salem Township HospitalSalem, IL · Critical Access Hospital · CCN 141345
- SSM Health St Mary's Hospital -CentraliaCentralia, IL · Acute Care Hospital · CCN 140034
- Washington County HospitalNashville, IL · Critical Access Hospital · CCN 141308
Practice locations
Addresses where Heather D. Knowles is enrolled with Medicare (CMS data updated 2026-10-02).
- 4109 S Water Tower PlMount Vernon, IL 62864 (618) 244‑4060
- 705 S GrandNashville, IL 62263
- 705 S Grand StNashville, IL 62263 (618) 327‑8236
Group practices
Medicare enrollment lists Heather D. Knowles as a member of these groups (CMS data updated 2026-10-02).
- Washington County Hospital District22 clinicians in the group
- Advanced Urologic Surgeons PC2 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Mount Vernon
Clinicians with the same Medicare primary specialty in Mount Vernon, IL — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922244045 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians