Ahmed F. Siddiqui, DO

Medicare activity in 2024

Official CMS public-use data for Ahmed F. 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.

Most frequent services

1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)438 services
2. Hospital discharge day management, more than 30 minutes (99239)171 services
3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)60 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)31 services
5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)15 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%
• Heart failure53%
• Ischemic heart disease52%
• Arthritis48%
• Anxiety43%

Hospitals where Ahmed F. Siddiqui works

Medicare's Facility Affiliation Data lists Ahmed F. 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.

• CGH Medical CenterSterling, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140043
• Morrison Community HospitalMorrison, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141329

Practice locations

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

• 100 E Le Fevre RdSterling, IL 61081 (815) 625‑0400
• 6374 N Lincoln Ave, Suite 201Chicago, IL 60659 (630) 465‑5891

Group practices

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

• CGH Medical Center197 clinicians in the group
• Kidney Specialists of Illinois, LLC4 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Sterling

Clinicians with the same Medicare primary specialty in Sterling, IL — not a recommendation.

• Eric Gale, MD
• Iyad A. Jundi, MD
• Peter J. Sharis, MD
• Kalpesh A. Patel, MD
• Cordus Easington, MD
• Vincent J. Racanelli, DO
• Todd W. Gray, MD
• Twinkle Singh

All internal medicine doctors in Sterling →

Other clinicians in CGH Medical Center

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

• Tyler J. Thompson, CNA
• Louise A. Witherspoon, MD
• Eric Gale, MD
• Keith L. Pham, MD
• Laurie A. Zollinger, AU
• Hassan A. Kieso, MD

Clinician information

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