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Radiation Oncology

Leslie A. St. Royal, MD

Works at hospitals in Baraboo, WI · Wisconsin

Summary

Dr. Leslie A. St. Royal, MD is a radiation oncologist at 707 14th St, Baraboo, WI 53913. Phone: (608) 356-1400. Accepts Medicare assignment. NPI 1316044316. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Radiation oncologist (Medicare lists Radiation Oncology)
  • Address: 707 14th St, Baraboo, WI 53913 · Directions
  • Phone: (608) 356‑1400
  • Medicare: Accepts Medicare assignment
  • Hospital: SSM Health St Clare Hospital - Baraboo
  • Group practice: Shared Magnetic Resonance Imaging Facility Inc
  • Medical school: University Of Southern California Keck School Of Medicine · graduated 1978 (48 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Leslie A. St. Royal, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Leslie A. St. Royal accept Medicare assignment?
Yes. Medicare's clinician data says Leslie A. St. Royal accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Leslie A. St. Royal's NPI number?
1316044316. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Leslie A. St. Royal works

Medicare's Facility Affiliation Data lists Leslie A. St. Royal at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Leslie A. St. Royal is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Leslie A. St. Royal as a member of this group (CMS data updated October 2, 2026).

  • Shared Magnetic Resonance Imaging Facility Inc10 clinicians in the group

Specialties

Find other Radiation Oncology doctors in Wisconsin →

Other radiation oncologists in Wisconsin

Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.

All radiation oncologists in Wisconsin →

Other clinicians in Shared Magnetic Resonance Imaging Facility Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Southern California Keck School Of Medicine
Graduation year1978 (48 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1316044316
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians