Short-term acute care hospital · Lake Forest, Illinois · 140 beds · CMS certification number 140130
Northwestern Medicine Lake Forest Hospital
Its Medicare cost reports, read cell by cell. Latest filing: fiscal year ended August 31, 2025, as submitted, stamped by CMS September 28, 2026. 30 years on file, every one shown below.
Fiscal 2025 at a glance
What stands out
- Net patient revenue rose from $68.4M in its first year on file (1996) to $600.0M in 2025.
- Its result from patient care: −$68.3M (2023), −$18.7M (2024), −$27.6M (2025).
- 2 of the 5 short-term acute care hospital peers below with a margin on file also report a loss on patient care for fiscal year 2025.
- Medicaid paid for 4.3% of its inpatient days and Medicare for 34.8%.
- NORTHWESTERN MEMORIAL HEALTHCARE holds 100% of it, on its Medicare enrollment.
Every statement is drawn from figures on this page; nothing is estimated.
30 years of filings
Net patient revenue against operating expenses, each year as filed.
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as submitted
Beside its peers
Short-term acute care hospitals in Illinois with 100 to 199 beds, each on fiscal year 2025.
| Hospital | Beds | Net patient revenue | Operating expenses | Margin |
|---|---|---|---|---|
| Northwestern Medicine Lake Forest Hospital | 140 | $599,993,824 | $627,603,137 | −4.6% |
| Anderson Hospital, Maryville | 144 | $212,168,782 | $202,995,850 | 4.3% |
| Northwestern Medicine Delnor Community Hospital, Geneva | 137 | $503,525,699 | $460,523,520 | 8.5% |
| Methodist Hospital of Chicago, Chicago | 141 | $20,079,867 | $23,150,331 | −15.3% |
| Saint Francis Hospital, Evanston | 138 | $164,501,525 | $203,785,867 | −23.9% |
| HSHS St. Elizabeth's Hospital, Ofallon | 144 | $336,964,761 | $315,242,819 | 6.5% |
Patients and payers
- Discharges
- 13,421S-3 line 14, col 15
- Inpatient days
- 53,923S-3 line 14, col 8
- Beds in use, on an average day
- 148.1days ÷ days in year
- Occupancy
- 105.2%days ÷ bed days
- Medicare share of days
- 34.8%S-3 cols 6 ÷ 8
- Medicaid share of days
- 4.3%S-3 cols 7 ÷ 8
Who owns it
- NORTHWESTERN MEMORIAL HEALTHCARE100%
Related organizations on its own cost report: NM HEALTHCARE, healthcare; NM HOSPITAL, healthcare; NM FOUNDATION, healthcare; NM MEDICAL GROUP, healthcare.
Other hospitals with the same owner: Palos Community Hospital (IL), Northwestern Medicine McHenry Hospital (IL), Northwestern Medicine Delnor Community Hospital (IL), Northwestern Medicine Central Dupage Hospital (IL), Northwestern Memorial Hospital (IL), Northwestern Medicine Kishwaukee Hospital (IL), Northwestern Medicine Valley West Hospital (IL), Northwestern Medicine Marianjoy Rehabilitation Hospital (IL).
Type of control on its cost report: voluntary nonprofit, other.
Owners of 5% or more, from CMS’s hospital ownership file (Medicare enrollment, October 1, 2026).
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Figures: CMS Healthcare Cost Report Information System, file HOSP10FY2024.ZIP, form CMS-2552-10, filed under CMS certification number 140130. Patients and payers: worksheet S-3 Part I of the same filing. Ownership: CMS Hospital All Owners and Hospital Enrollments.
How this page was built: the CMS Medicare cost report, file HOSP10FY2024.ZIP, read September 28, 2026.