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Diagnostic Radiology

Thomas Schroyer Jr., MD

Works at hospitals in Mount Vernon, IL · Bridgeton, MO · Saint Louis, MO … · Illinois, Missouri

Summary

Thomas Schroyer Jr., MD (Diagnostic Radiology) is listed by Medicare at 5 hospitals in Mount Vernon, IL, Bridgeton, MO and Saint Louis, MO and other places. NPI 1306827829. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Thomas Schroyer Jr., joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Diagnostic RadiologyPrimary specialty
YesAccepts Medicare assignment
22Years since medical school (graduated 2004)
Saint Louis University School Of MedicineMedical school
MaleGender (as listed)
OSF Multi-Specialty GroupGroup practice (+2 more)

Quick answers

Which hospitals does Thomas Schroyer Jr. work at?
Medicare's official clinician data lists Thomas Schroyer Jr. at 5 hospitals: Good Samaritan Regional Health Center, SSM Health Depaul Hospital St Louis, SSM Health St Mary's Hospital - St Louis, SSM Health St Mary's Hospital -Centralia and SSM St Clare Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Thomas Schroyer Jr. see patients?
Medicare's clinician data lists 4 practice locations, including Mount Vernon, IL, Fenton, MO and Centralia, IL. Call before your visit to confirm the address.
What is Thomas Schroyer Jr.'s specialty?
Medicare lists Diagnostic Radiology as the primary specialty.
Does Thomas Schroyer Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Thomas Schroyer Jr. 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 Thomas Schroyer Jr.?
(618) 242-4600, as listed in official Medicare / NPI Registry data.
What is Thomas Schroyer Jr.'s NPI number?
1306827829. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Thomas Schroyer Jr. works

Medicare's Facility Affiliation Data lists Thomas Schroyer Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Thomas Schroyer Jr. is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Thomas Schroyer Jr. as a member of these groups (CMS data updated 2026-10-02).

  • OSF Multi-Specialty Group2,114 clinicians in the group
  • Ernst Radiology Clinic, Inc20 clinicians in the group
  • Ernst Radiology Clinic Inc16 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in Illinois →

Other radiologists in Mount Vernon

Clinicians with the same Medicare primary specialty in Mount Vernon, IL — not a recommendation.

All radiologists in Mount Vernon →

Clinician information

CredentialMD
Medical schoolSaint Louis University School Of Medicine
Graduation year2004
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1306827829
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians