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Diagnostic Radiology

Steven M. Walczak, MD

Works at hospitals in Orlando, FL · Saint Petersburg, FL · Sebastian, FL … · Florida

Summary

Dr. Steven M. Walczak, MD is a radiologist at 10889 W Colonial Dr, Ocoee, FL 34761. Phone: (407) 331-9355. Accepts Medicare assignment. In 2024, Steven M. Walczak had 446 Original Medicare patients and 1,635 services. NPI 1174519995. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about Steven M. Walczak, 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 Steven M. Walczak accept Medicare assignment?
Yes. Medicare's clinician data says Steven M. Walczak 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 Steven M. Walczak see?
In 2024, CMS data shows 446 Original Medicare patients and 1,635 services for Steven M. Walczak. This counts Original Medicare only and measures volume, not quality.
What is Steven M. Walczak's NPI number?
1174519995. 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 Steven M. Walczak, 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 patients446
Services billed to Medicare1,635
Different services or procedures52
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Injection, gadobutrol, 0.1 ml (A9585)972 services
  2. X-ray of chest, 1 view (71045)97 services
  3. Mri scan of leg joint without contrast (73721)88 services
  4. Mri scan of arm joint without contrast (73221)56 services
  5. 3d radiographic procedure with computerized image postprocessing (76377)55 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 blood pressure75%
  • High cholesterol75%
  • Arthritis67%
  • Ischemic heart disease43%
  • Diabetes36%
  • Anxiety34%

Hospitals where Steven M. Walczak works

Medicare's Facility Affiliation Data lists Steven M. Walczak 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 Steven M. Walczak is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.

Group practices

Medicare enrollment lists Steven M. Walczak as a member of these groups (CMS data updated October 2, 2026).

  • Orlando Health Medical Group Inc2,287 clinicians in the group
  • Ohri LLC154 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in Florida →

Other radiologists in Ocoee

Clinicians with the same Medicare primary specialty in Ocoee, FL — not a recommendation.

All radiologists in Ocoee →

Other clinicians in Orlando Health Medical Group Inc

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

Clinician information

CredentialMD
Medical schoolWayne State University School Of Medicine
Graduation year1992 (34 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1174519995
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