Quick answers
- Does Aziz Ahmed accept Medicare assignment?
- Yes. Medicare's clinician data says Aziz Ahmed 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 Aziz Ahmed see?
- In 2024, CMS data shows 1,155 Original Medicare patients and 4,309 services for Aziz Ahmed. This counts Original Medicare only and measures volume, not quality.
- What is Aziz Ahmed's NPI number?
- 1962403998. 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 Aziz Ahmed, 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 | 1,155 |
|---|---|
| Services billed to Medicare | 4,309 |
| Different services or procedures | 77 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)991 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)652 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)418 services
- Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)384 services
- Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (99454)363 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%
- Arthritis54%
- Diabetes49%
- Anxiety44%
- Heart failure44%
Hospitals where Aziz Ahmed works
Medicare's Facility Affiliation Data lists Aziz Ahmed 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.
- Elmhurst Memorial HospitalElmhurst, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140200
- Holy Cross HospitalChicago, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140133
- Loretto HospitalChicago, IL · Acute Care Hospital · Emergency services: listed by Medicare · CCN 140083
- Mt Sinai Hospital Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140018
- UChicago Medicine AdventHealth GlenoaksGlendale Heights, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140292
Practice locations
Addresses where Aziz Ahmed is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 120 N Oak StHinsdale, IL 60521 (708) 856‑9000
- 13 Pembroke LnOak Brook, IL 60523 (630) 532‑8999
- 1401 S California AveChicago, IL 60608 (773) 522‑6656
- 2653 W Ogden Ave, Fl 3 Suite AChicago, IL 60608 (773) 257‑6672
- 2701 W 68th StChicago, IL 60629 (773) 884‑9000
Group practices
Medicare enrollment lists Aziz Ahmed as a member of these groups (CMS data updated October 2, 2026).
- Mount Sinai Community Foundation248 clinicians in the group
- Loretto Hospital40 clinicians in the group
- Adventist Midwest Health15 clinicians in the group
- Adventist Glenoaks Hospital2 clinicians in the group
Specialties
Other internal medicine doctors in Hinsdale
Clinicians with the same Medicare primary specialty in Hinsdale, IL — not a recommendation.
Other clinicians in Mount Sinai Community Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962403998 |
| 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