Douglas W. Lillie, MD

Medicare activity in 2024

Official CMS public-use data for Douglas W. Lillie, 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 low level od decision making, if using time, 20 minutes or more (99213)364 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)301 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)198 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)107 services
5. Administration of influenza virus vaccine (G0008)77 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 pressure71%
• High cholesterol54%
• Arthritis33%
• Chronic kidney disease28%
• Diabetes27%
• Ischemic heart disease27%

Hospitals where Douglas W. Lillie works

Medicare's Facility Affiliation Data lists Douglas W. Lillie 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.

• Aurora St Lukes Medical CenterMilwaukee, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520138
• West Allis Memorial HospitalWest Allis, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520139

Practice locations

Addresses where Douglas W. Lillie is enrolled with Medicare (CMS data updated October 2, 2026).

• 2424 S 90th, Suite 310West Allis, WI 53227

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Wisconsin →

Other internal medicine doctors in West Allis

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

• Mazen A. Barakat, MD
• Masroor Munim, MD
• Stuti Shankar, MD
• Hirenkumar Pansheriya, MD
• Stephanie A. Momper, MD
• Catherine V. Aleman, MD
• Eric U. Luy, MD
• Nishant K. Vaidy, MD

All internal medicine doctors in West Allis →

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