Quick answers
- Does Zahoor A. Makhdoom accept Medicare assignment?
- Yes. Medicare's clinician data says Zahoor A. Makhdoom 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 Zahoor A. Makhdoom see?
- In 2024, CMS data shows 951 Original Medicare patients and 16,099 services for Zahoor A. Makhdoom. This counts Original Medicare only and measures volume, not quality.
- What is Zahoor A. Makhdoom's NPI number?
- 1982667309. 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 Zahoor A. Makhdoom, 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 | 951 |
|---|---|
| Services billed to Medicare | 16,099 |
| Different services or procedures | 65 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)5,558 services
- Injection, midazolam hydrochloride, per 1 mg (J2250)2,841 services
- Injection, diphenhydramine hcl, up to 50 mg (J1200)1,086 services
- Special stained specimen slides to examine tissue including interpretation and report (88313)1,064 services
- Injection, meperidine hydrochloride, per 100 mg (J2175)1,012 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%
- Arthritis51%
- Anxiety29%
- Diabetes28%
- Ischemic heart disease23%
Hospitals where Zahoor A. Makhdoom works
Medicare's Facility Affiliation Data lists Zahoor A. Makhdoom 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.
- Franklin HospitalBenton, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141321
- Heartland Regional Medical CenterMarion, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140184
- Herrin HospitalHerrin, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140011
- Marshall Browning HospitalDu Quoin, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141331
- St Joseph Memorial HospitalMurphysboro, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141334
Practice locations
Addresses where Zahoor A. Makhdoom is enrolled with Medicare (CMS data updated October 2, 2026).
- 110 W Diann LaneCarbondale, IL 62901
- 1100 W Diann LnCarbondale, IL 62901 (618) 549‑8006
Group practices
Medicare enrollment lists Zahoor A. Makhdoom as a member of this group (CMS data updated October 2, 2026).
- Southern Illinois Gi Specialists LLC4 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Southern Illinois Gi Specialists LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982667309 |
| 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