Quick answers
- Does Rehan A. Nizamuddin accept Medicare assignment?
- Yes. Medicare's clinician data says Rehan A. Nizamuddin 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 Rehan A. Nizamuddin see?
- In 2024, CMS data shows 4,018 Original Medicare patients and 5,146 services for Rehan A. Nizamuddin. This counts Original Medicare only and measures volume, not quality.
- What is Rehan A. Nizamuddin's NPI number?
- 1619322252. 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 Rehan A. Nizamuddin, 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 patients | 4,018 |
|---|---|
| Services billed to Medicare | 5,146 |
| Different services or procedures | 103 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Ct scan of chest without contrast (71250)640 services
- Ct scan of abdomen and pelvis with contrast (74177)589 services
- X-ray of chest, 1 view (71045)444 services
- Ct scan of chest with contrast (71260)362 services
- Ct scan of abdomen and pelvis without contrast (74176)284 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 cholesterol75%
- High blood pressure73%
- Arthritis58%
- Ischemic heart disease35%
- Diabetes30%
- Chronic kidney disease29%
Hospitals where Rehan A. Nizamuddin works
Medicare's Facility Affiliation Data lists Rehan A. Nizamuddin 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.
- Advocate Lutheran General HospitalPark Ridge, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140223
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140010
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140130
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140281
- Swedish HospitalChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140114
Practice locations
Addresses where Rehan A. Nizamuddin is enrolled with Medicare (CMS data updated October 2, 2026).
- 2650 Ridge Ave, Suite 2218aEvanston, IL 60201 (847) 503‑4222
Group practices
Medicare enrollment lists Rehan A. Nizamuddin as a member of this group (CMS data updated October 2, 2026).
- Endeavor Health Medical Group3,350 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Evanston
Clinicians with the same Medicare primary specialty in Evanston, IL — not a recommendation.
Other clinicians in Endeavor Health Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Missouri, Kansas City, School Of Medicine |
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619322252 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians