Quick answers
- Which hospitals does William C. Yarnell work at?
- Medicare's official clinician data lists William C. Yarnell at 3 hospitals: Decatur Memorial Hospital, Jacksonville Memorial Hospital and Memorial Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William C. Yarnell see patients?
- Medicare's clinician data lists 3 practice locations, including Jacksonville, IL, Decatur, IL and Springfield, IL. Call before your visit to confirm the address.
- What is William C. Yarnell's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does William C. Yarnell accept Medicare assignment?
- Yes. Medicare's clinician data says William C. Yarnell 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 William C. Yarnell?
- (217) 876-8121, as listed in official Medicare / NPI Registry data.
- What is William C. Yarnell's NPI number?
- 1518541556. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William C. Yarnell works
Medicare's Facility Affiliation Data lists William C. Yarnell at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Decatur Memorial HospitalDecatur, IL · Acute Care Hospital · CCN 140135
- Jacksonville Memorial HospitalJacksonville, IL · Critical Access Hospital · CCN 141352
- Memorial Medical CenterSpringfield, IL · Acute Care Hospital · CCN 140148
Practice locations
Addresses where William C. Yarnell is enrolled with Medicare (CMS data updated 2026-10-02).
- 1600 W Walnut StJacksonville, IL 62650
- 2300 N Edward StDecatur, IL 62526 (217) 876‑8121
- 701 N 1st StSpringfield, IL 62781 (217) 788‑3156
Group practices
Medicare enrollment lists William C. Yarnell as a member of these groups (CMS data updated 2026-10-02).
- Midwest Emergency Department Specialists Ltd64 clinicians in the group
- Passavant Memorial Area Hospital Association10 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Jacksonville
Clinicians with the same Medicare primary specialty in Jacksonville, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518541556 |
| 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