Lewis B. Somberg, MD

Medicare activity in 2024

Official CMS public-use data for Lewis B. Somberg, 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)29 services
2. Critical care, first 30-74 minutes (99291)20 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 cholesterol74%
• Arthritis50%
• Chronic kidney disease43%
• Ischemic heart disease39%
• Anxiety38%

Hospitals where Lewis B. Somberg works

Medicare's Facility Affiliation Data lists Lewis B. Somberg 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.

• Froedtert Memorial Lutheran HospitalMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520177

Practice locations

Addresses where Lewis B. Somberg is enrolled with Medicare (CMS data updated October 2, 2026).

• 8701 W Watertown PlankMilwaukee, WI 53226 (414) 805‑3666
• 8701 Watertown Plank Rd, Room 4041 MfrcMilwaukee, WI 53226 (414) 805‑3666
• W129n7055 Northfield DrMenomonee Falls, WI 53051 (262) 253‑5400

Group practices

Medicare enrollment lists Lewis B. Somberg as a member of these groups (CMS data updated October 2, 2026).

• The Medical College of Wisconsin Inc2,115 clinicians in the group
• Froedtert Andthe Medical College of Wisconsin Community Physicians Inc1,285 clinicians in the group

Specialties

• General Surgeryprimary
• Critical Care (Intensivists)also

Find other General Surgery doctors in Wisconsin →

Other general surgeons in Milwaukee

Clinicians with the same Medicare primary specialty in Milwaukee, WI — not a recommendation.

• William L. Ritt, DO
• Adam J. Basler, MD
• Ibrahim A. Khrais, MD
• Christopher P. Johnson, MD
• Andrew S. Kastenmeier, MD
• Luckshi Rajendran, MD
• David J. Milia
• William F. Digilio, MD

All general surgeons in Milwaukee →

Other clinicians in The Medical College of Wisconsin Inc

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

• Glen D. Solomon, MD
• Alison A. Volz
• Dmitriy Kogan, MD
• Susan M. Thoreson, NP
• Andrea K. Rossi
• Bimatshu Pyakuryal, 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