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Radiation Oncology

Zain I. Siddiqui, MD

Works at hospitals in Elkhart, IN · South Bend, IN · Indiana

Summary

Dr. Zain I. Siddiqui, MD is a radiation oncologist at 600 E Blvd, Elkhart, IN 46514. Phone: (574) 389-7393. Accepts Medicare assignment. In 2024, Zain I. Siddiqui had 194 Original Medicare patients and 531 services. NPI 1467068502. 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 Zain I. Siddiqui, 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 Zain I. Siddiqui accept Medicare assignment?
Yes. Medicare's clinician data says Zain I. Siddiqui 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 Zain I. Siddiqui see?
In 2024, CMS data shows 194 Original Medicare patients and 531 services for Zain I. Siddiqui. This counts Original Medicare only and measures volume, not quality.
What is Zain I. Siddiqui's NPI number?
1467068502. 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 Zain I. Siddiqui, 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 patients194
Services billed to Medicare531
Different services or procedures7
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)378 services
  2. Hospital discharge day management, more than 30 minutes (99239)59 services
  3. Hospital discharge day management, 30 minutes or less (99238)55 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)23 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%
  • Ischemic heart disease59%
  • Chronic kidney disease49%
  • Arthritis47%
  • Heart failure47%

Hospitals where Zain I. Siddiqui works

Medicare's Facility Affiliation Data lists Zain I. Siddiqui 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.

  • Elkhart General HospitalElkhart, IN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 150018
  • Memorial Hospital of South BendSouth Bend, IN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 150058

Practice locations

Addresses where Zain I. Siddiqui is enrolled with Medicare (CMS data updated October 2, 2026).

  • 600 E BlvdElkhart, IN 46514 (574) 389‑7393
  • 600 E Blvd 4th Fl Hospitalists, Bmg Hospital SpecialtiesElkhart, IN 46514 (574) 647‑3050
  • 615 N Michigan StSouth Bend, IN 46601
  • 615 N Michigan St, Fl 5South Bend, IN 46601 (574) 647‑7275
  • 615 N Michigan St FlSouth Bend, IN 46601

Group practices

Medicare enrollment lists Zain I. Siddiqui as a member of these groups (CMS data updated October 2, 2026).

  • Beacon Medical Group Inc589 clinicians in the group
  • Apogee Medical Group Indiana PC66 clinicians in the group

Specialties

Find other Radiation Oncology doctors in Indiana →

Other radiation oncologists in Indiana

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

All radiation oncologists in Indiana →

Other clinicians in Beacon Medical Group Inc

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

Clinician information

CredentialMD
Graduation year2023 (3 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1467068502
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