Lauren R. Williams, MD

Medicare activity in 2024

Official CMS public-use data for Lauren R. Williams, 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)132 services
2. 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)38 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)30 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 cholesterol61%
• Arthritis56%
• Diabetes54%
• Chronic kidney disease27%
• Ischemic heart disease23%

Hospitals where Lauren R. Williams works

Medicare's Facility Affiliation Data lists Lauren R. Williams 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.

• University of Illinois Hospital and ClinicsChicago, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140150

Practice locations

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

• 1801 W Taylor StChicago, IL 60612
• 845 W Wilson AveChicago, IL 60640 (312) 744‑1295
• 845 W Wilson Ave, Uic MedicineChicago, IL 60640 (312) 744‑1295

Group practices

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

• The Board of Trustees of the University of Illinois1,150 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Chicago

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

• David N. Kiragu, MD
• Jacqueline D. Leavitt, MD
• Bety C. Ciobanu, MD
• Bolanle O. Soyannwo Balogun, MD
• Vanessa Alonso
• Mindy A. Schwartz, MD
• Grace B. Lashore, MD
• Patrick A. Tosetti, MD

All internal medicine doctors in Chicago →

Other clinicians in The Board of Trustees of the University of Illinois

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

• Lizabeth Fernandez
• Alexandra Asrow, MD
• Stephen T. Bartlett, MD
• Amanda J. Andrews
• Jeremy J. Beaulieu
• Heather C. Nixon, 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