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Acute care hospital Emergency roomLevel III trauma

Oconomowoc Memorial Hospital in Oconomowoc, WI

Directions (262) 569-9400 prohealthcare.org

In a medical emergency, call 911. This page is for information only.

Overview

About Oconomowoc Memorial Hospital

Oconomowoc Memorial Hospital is an acute care hospital in Oconomowoc, Waukesha County, Wisconsin. It reports its ownership to Medicare as nonprofit (private). It provides emergency services. It is listed as a Level III trauma center. Its CMS Overall Hospital Quality Star Rating is 5 out of 5. It has 156 licensed beds, according to state license data via HIFLD. It meets the CMS Birthing-Friendly designation criteria for maternity care. The nearest other listed hospital is Aurora Medical Center - Summit, about 0.6 mi away.

CMS Care Compare

Quality ratings

5
Overall Hospital Quality Star Rating, out of 5

How this hospital compares with the national rate on each measure group:

Mortality
6 no different
Deaths within 30 days for conditions such as heart attack, heart failure, pneumonia and stroke.
Safety of care
3 no different
Infections and complications acquired in the hospital.
Readmission
1 better · 8 no different
Unplanned returns to the hospital after discharge.

Source: Centers for Medicare & Medicaid Services, Hospital General Information. How star ratings work.

Emergency department

Emergency room times

136 min
Median time in the ER before leaving (OP-18b)
0.0%
Left before being seen (OP-22)
low
Emergency department volume

Lower times are better. Reporting period ending September 2025. Source: CMS Timely and Effective Care. What these numbers mean.

Safety of care

Infections and sepsis care

  • Clostridioides difficile (C. diff) infectionsNo different · SIR 0.45

80% of patients with severe sepsis or septic shock received all the recommended early care steps (SEP-1). Higher is better.

SIR is the standardized infection ratio: below 1 means fewer infections than predicted for a hospital like this one. Period ending September 2025. Source: CMS Healthcare-Associated Infections and Timely and Effective Care.

HCAHPS survey

What patients say

  • Patient survey star rating
  • Would definitely recommend76%
  • Rated the hospital 9 or 1076%
  • Completed surveys509

Survey period ending September 2025. Source: CMS HCAHPS Patient Survey.

Map

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43.10137, -88.48648

Within 25 miles

Nearby hospitals

Frequently asked questions

Where is Oconomowoc Memorial Hospital located?

Oconomowoc Memorial Hospital is at 791 E Summit Ave, Oconomowoc, WI 53066 in Waukesha County.

Does Oconomowoc Memorial Hospital have an emergency room?

Yes. Oconomowoc Memorial Hospital reports emergency services to Medicare, and patients spent a median of 136 minutes in its emergency department before leaving. In a life-threatening emergency, call 911.

What is the CMS star rating of Oconomowoc Memorial Hospital?

Oconomowoc Memorial Hospital has a CMS Overall Hospital Quality Star Rating of 5 out of 5. The rating combines measures of mortality, safety of care, readmission, patient experience and timely and effective care, compared with hospitals nationwide.

Is Oconomowoc Memorial Hospital a trauma center?

Yes. It is listed as a Level III trauma center in the HIFLD hospitals data, which is compiled from state trauma registries (source date April 2024). Trauma designations are renewed periodically, so confirm with the Wisconsin EMS or trauma program. In an emergency, call 911: paramedics take seriously injured patients to the right trauma center.

What is the phone number of Oconomowoc Memorial Hospital?

The main phone number on record with Medicare is (262) 569-9400.

Would patients recommend Oconomowoc Memorial Hospital?

In the most recent HCAHPS patient survey (509 completed surveys), 76% of patients said they would definitely recommend the hospital, and 76% rated it 9 or 10 out of 10.

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