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Internal Medicine

John S. Shallat, MD

Works at hospitals in Peoria, IL · Illinois

Summary

John S. Shallat, MD (Internal Medicine) is listed by Medicare at 1 hospital in Peoria, IL. NPI 1942381306. 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 John S. Shallat, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
30Years since medical school (graduated 1996)
University Of Illinois College Of Med (chi/peor/rock/chm-Urb)Medical school
MaleGender (as listed)
OSF Multi-Specialty GroupGroup practice

Quick answers

Which hospitals does John S. Shallat work at?
Medicare's official clinician data lists John S. Shallat at 1 hospital: Saint Francis Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does John S. Shallat see patients?
Medicare's clinician data lists 1 practice location in Peoria, IL. Call before your visit to confirm the address.
What is John S. Shallat's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does John S. Shallat accept Medicare assignment?
Yes. Medicare's clinician data says John S. Shallat 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 John S. Shallat?
(309) 683-5050, as listed in official Medicare / NPI Registry data.
What is John S. Shallat's NPI number?
1942381306. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where John S. Shallat works

Medicare's Facility Affiliation Data lists John S. Shallat 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 John S. Shallat is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists John S. Shallat as a member of this group (CMS data updated 2026-10-02).

  • OSF Multi-Specialty Group2,114 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Peoria

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

All internal medicine doctors in Peoria →

Clinician information

CredentialMD
Medical schoolUniversity Of Illinois College Of Med (chi/peor/rock/chm-Urb)
Graduation year1996
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1942381306
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