Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Diagnostic Radiology

Thomas E. Johnson, MD

Works at hospitals in Sioux Falls, SD · Estherville, IA · Marshall, MN … · South Dakota, Iowa, Minnesota

Summary

Thomas E. Johnson, MD (Diagnostic Radiology) is listed by Medicare at 5 hospitals in Sioux Falls, SD, Estherville, IA and Marshall, MN and other places. NPI 1245624436. 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 E. Johnson, 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
11Years since medical school (graduated 2015)
University Of North Dakota School Of MedicineMedical school
MaleGender (as listed)

Quick answers

Which hospitals does Thomas E. Johnson work at?
Medicare's official clinician data lists Thomas E. Johnson at 5 hospitals: Avera Heart Hospital of South Dakota, Avera Holy Family Hospital, Avera Marshall Regional Medical Ctr, Avera McKennan Hospital & University Health Center and Brookings Health System. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Thomas E. Johnson see patients?
Medicare's clinician data lists 15 practice locations, including Yankton, SD, Sioux Falls, SD and Madison, SD. Call before your visit to confirm the address.
What is Thomas E. Johnson's specialty?
Medicare lists Diagnostic Radiology as the primary specialty.
Does Thomas E. Johnson accept Medicare assignment?
Yes. Medicare's clinician data says Thomas E. Johnson 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 E. Johnson?
(605) 322-4878, as listed in official Medicare / NPI Registry data.
What is Thomas E. Johnson's NPI number?
1245624436. 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 E. Johnson works

Medicare's Facility Affiliation Data lists Thomas E. Johnson 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 E. Johnson is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 15; the Medicare profile lists all.

Group practices

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

  • Avera McKennan959 clinicians in the group
  • Sacred Heart Health Services153 clinicians in the group
  • Avera Queen of Peace122 clinicians in the group
  • Avera Marshall99 clinicians in the group
  • Madison Community Hospital47 clinicians in the group
  • Urology Specialists Chartered47 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in South Dakota →

Other radiologists in Yankton

Clinicians with the same Medicare primary specialty in Yankton, SD — not a recommendation.

All radiologists in Yankton →

Clinician information

CredentialMD
Medical schoolUniversity Of North Dakota School Of Medicine
Graduation year2015
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1245624436
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