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Diagnostic Radiology

Joao V. Machado Horvat, MD

Works at hospitals in Rochester, MN · Minnesota

Summary

Dr. Joao V. Machado Horvat, MD is a radiologist at 200 1st St SW, Rochester, MN 55905. Phone: (507) 284-2511. Accepts Medicare assignment. In 2024, Joao V. Machado Horvat had 561 Original Medicare patients and 2,161 services. NPI 1952918203. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Radiologist (Medicare lists Diagnostic Radiology)
  • Address: 200 1st St SW, Rochester, MN 55905 · Directions
  • Phone: (507) 284‑2511
  • Medicare: Accepts Medicare assignment
  • Hospital: Mayo Clinic Hospital Rochester
  • Group practice: Mayo Clinic
  • Medical school: graduated 2006 (20 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Joao V. Machado Horvat, 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 Joao V. Machado Horvat accept Medicare assignment?
Yes. Medicare's clinician data says Joao V. Machado Horvat 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.
How many Medicare patients does Joao V. Machado Horvat see?
In 2024, CMS data shows 561 Original Medicare patients and 2,161 services for Joao V. Machado Horvat. This counts Original Medicare only and measures volume, not quality.
What is Joao V. Machado Horvat's NPI number?
1952918203. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Joao V. Machado Horvat, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients561
Services billed to Medicare2,161
Different services or procedures25
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Injection, gadobutrol, 0.1 ml (A9585)1,000 services
  2. Screening mammography (77067)378 services
  3. Screening 3d breast mammography (77063)374 services
  4. Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)87 services
  5. Limited ultrasound scan of 1 breast (76642)83 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol68%
  • High blood pressure57%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)49%
  • Arthritis43%
  • Osteoporosis30%
  • Diabetes23%

Hospitals where Joao V. Machado Horvat works

Medicare's Facility Affiliation Data lists Joao V. Machado Horvat 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 Joao V. Machado Horvat is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Joao V. Machado Horvat as a member of this group (CMS data updated October 2, 2026).

  • Mayo Clinic4,956 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in Minnesota →

Other radiologists in Rochester

Clinicians with the same Medicare primary specialty in Rochester, MN — not a recommendation.

All radiologists in Rochester →

Other clinicians in Mayo Clinic

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

Clinician information

CredentialMD
Graduation year2006 (20 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1952918203
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians