Vairavan R. Viswanathan, MD

Medicare activity in 2024

Official CMS public-use data for Vairavan R. Viswanathan, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,464 services
2. Insertion of needle into vein for collection of blood sample (36415)1,159 services
3. Blood test, comprehensive group of blood chemicals (80053)942 services
4. Blood test, lipids (cholesterol and triglycerides) (80061)889 services
5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)783 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%
• Arthritis40%
• Diabetes36%
• Chronic kidney disease32%
• Ischemic heart disease31%

Hospitals where Vairavan R. Viswanathan works

Medicare's Facility Affiliation Data lists Vairavan R. Viswanathan 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.

• Saint Joseph Medical CenterJoliet, IL · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 140007
• Silver Cross Hospital and Medical CentersNew Lenox, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140213

Practice locations

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

• 2100 Glenwood AveJoliet, IL 60435 (815) 725‑2121

Group practices

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

• Dupage Medical Group Ltd1,322 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Joliet

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

• Hajira Khan, MD
• Wael McTabi, MD
• Samindi M. Gunasekara, MD
• Eleanor Bautista, MD
• Manamar Singh, MD
• Karim K. Tourk, MD
• Keyur M. Chauhan, MD
• Abhinav Singla, MD

All internal medicine doctors in Joliet →

Other clinicians in Dupage Medical Group Ltd

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

• Richard R. Anderson, MD
• Meghan E. Seymour, OT
• Jonathan Twu, MD
• Tammam Nehme, MD
• Patrick J. Oleary, MD
• Eugenia V. Velasco, PT

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