Zareena R. Khan, MD

Medicare activity in 2024

Official CMS public-use data for Zareena R. Khan, 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. Anesthesia for lens surgery (00142)36 services
2. Insertion of artery tube for blood sampling or infusion through skin (36620)16 services
3. Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)16 services
4. Anesthesia for procedure for total knee joint replacement (01402)11 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%
• Arthritis67%
• Diabetes40%
• Ischemic heart disease36%
• Chronic kidney disease33%

Hospitals where Zareena R. Khan works

Medicare's Facility Affiliation Data lists Zareena R. Khan 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 Condell Medical CenterLibertyville, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140202

Practice locations

Addresses where Zareena R. Khan is enrolled with Medicare (CMS data updated October 2, 2026).

• 801 S Milwaukee AveLibertyville, IL 60048 (847) 279‑0061

Group practices

Medicare enrollment lists Zareena R. Khan as a member of this group (CMS data updated October 2, 2026).

• Advocate Health and Hospitals Corporation3,118 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Illinois →

Other anesthesiologists in Libertyville

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

• Marc C. Donahue, MD
• Anthony T. Tantoco, MD
• Steven C. Marquardt, MD
• Jessica Carani
• Nadeem A. Mirza, MD
• Michael J. Hruskocy, MD
• Anna M. Makowiecki, MD
• Michael R. Marinello, MD

All anesthesiologists in Libertyville →

Other clinicians in Advocate Health and Hospitals Corporation

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

• Chanannait Paisansathan, MD
• Brian D. Sklar, MD
• Joy Iskandar, DO
• Simon M. Adanin, DO
• Rebecca E. McFall, MD
• Gleb Gorelick, 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