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Cardiovascular Disease (Cardiology)

Anna C. Silenzi, DO

Works at hospitals in Milwaukee, WI · Kenosha, WI · Wisconsin

Summary

Dr. Anna C. Silenzi, DO is a cardiologist at 10256 Old Green Bay Rd, Pleasant Prairie, WI 53158. Phone: (262) 551-4200. Accepts Medicare assignment. In 2024, Anna C. Silenzi had 1,394 Original Medicare patients and 3,861 services. NPI 1639365661. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Cardiologist (Medicare lists Cardiovascular Disease (Cardiology))
  • Address: 10256 Old Green Bay Rd, Pleasant Prairie, WI 53158 · Directions (4 more locations)
  • Phone: (262) 551‑4200
  • Medicare: Accepts Medicare assignment
  • Hospitals: Froedtert Memorial Lutheran Hospital, Froedtert South Inc.
  • Group practice: Froedtert South Inc
  • Medical school: graduated 2000 (26 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Anna C. Silenzi, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Anna C. Silenzi accept Medicare assignment?
Yes. Medicare's clinician data says Anna C. Silenzi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Anna C. Silenzi see?
In 2024, CMS data shows 1,394 Original Medicare patients and 3,861 services for Anna C. Silenzi. This counts Original Medicare only and measures volume, not quality.
What is Anna C. Silenzi's NPI number?
1639365661. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Anna C. Silenzi, 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.

Original Medicare patients1,394
Services billed to Medicare3,861
Different services or procedures59
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)921 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)737 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)650 services
  4. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)267 services
  5. Ultrasound of heart with color-depicted blood flow, rate and valve function (93325)101 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%
  • Arthritis50%
  • Ischemic heart disease39%
  • Atrial fibrillation35%
  • Diabetes34%

Hospitals where Anna C. Silenzi works

Medicare's Facility Affiliation Data lists Anna C. Silenzi 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.

Practice locations

Addresses where Anna C. Silenzi is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Anna C. Silenzi as a member of this group (CMS data updated October 2, 2026).

  • Froedtert South Inc161 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Wisconsin →

Other cardiologists in Wisconsin

Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.

All cardiologists in Wisconsin →

Other clinicians in Froedtert South Inc

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

Clinician information

CredentialDO
Graduation year2000 (26 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1639365661
CorrectionsReport an error or suggest an update →

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