Quick answers
- Which hospitals does Jason J. McAllaster work at?
- Medicare's official clinician data lists Jason J. McAllaster at 5 hospitals: Clay County Hospital, HSHS Holy Family Hospital Inc, Memorial Medical Center, Sarah Bush Lincoln Health Center and St Anthonys Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jason J. McAllaster see patients?
- Medicare's clinician data lists 7 practice locations, including Greenville, IL, Effingham, IL and Springfield, IL. Call before your visit to confirm the address.
- What is Jason J. McAllaster's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Jason J. McAllaster accept Medicare assignment?
- Yes. Medicare's clinician data says Jason J. McAllaster 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 Jason J. McAllaster?
- (618) 664-1230, as listed in official Medicare / NPI Registry data.
- What is Jason J. McAllaster's NPI number?
- 1306874466. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jason J. McAllaster works
Medicare's Facility Affiliation Data lists Jason J. McAllaster at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Clay County HospitalFlora, IL · Critical Access Hospital · CCN 141351
- HSHS Holy Family Hospital IncGreenville, IL · Acute Care Hospital · CCN 140137
- Memorial Medical CenterSpringfield, IL · Acute Care Hospital · CCN 140148
- Sarah Bush Lincoln Health CenterMattoon, IL · Acute Care Hospital · CCN 140189
- St Anthonys Memorial HospitalEffingham, IL · Acute Care Hospital · CCN 140032
Practice locations
Addresses where Jason J. McAllaster is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 200 Health Care DrGreenville, IL 62246 (618) 664‑1230
- 300 N MapleEffingham, IL 62401 (217) 528‑7541
- 300 N Maple St PO BoxEffingham, IL 62401
- 300 N Maple St PO Box, Suite 1268Effingham, IL 62401
- 503 N Maple StEffingham, IL 62401 (217) 342‑2121
Group practices
Medicare enrollment lists Jason J. McAllaster as a member of these groups (CMS data updated 2026-10-02).
- Springfield Clinic, LLP687 clinicians in the group
- HSHS Holy Family Hospital Inc25 clinicians in the group
- St Anthonys Memorial Hospital of the Hospital Sisters of the Third25 clinicians in the group
- Marshall Clinic Effingham S C14 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306874466 |
| 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