Psychiatric hospital · Amityville, New York · 202 beds · CMS certification number 334027
South Oaks Hospital
Its Medicare cost reports, read cell by cell. Latest filing: fiscal year ended December 31, 2025, as submitted, stamped by CMS June 23, 2026. 30 years on file, every one shown below.
Fiscal 2025 at a glance
What stands out
- Net patient revenue rose from $50.5M in its first year on file (1996) to $123.4M in 2025.
- Its result from patient care: −$11.0M (2023), −$2.7M (2024), −$6.6M (2025).
- Medicaid paid for 5.3% of its inpatient days and Medicare for 10.0%.
- NORTHWELL HEALTHCARE INC 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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Beside its peers
Psychiatric hospitals in New York with 200 to 399 beds, each on fiscal year 2025.
| Hospital | Beds | Net patient revenue | Operating expenses | Margin |
|---|---|---|---|---|
| South Oaks Hospital | 202 | $123,425,514 | $129,987,449 | −5.3% |
| Kirby Forensic Psychiatric Center, New York | 235 | $77,054,757 | ||
| Manhattan Psychiatric Center, New York | 231 | $94,015,743 | ||
| Mid Hidson Psychiatric Center, New Hampton | 285 | $81,570,596 | ||
| Rochester Psychiatric Center, Rochester | 233 | $76,634,787 | ||
| South Beach Psychiatric Center, Staten Island | 260 | $99,265,477 |
Patients and payers
- Discharges
- 3,268S-3 line 14, col 15
- Inpatient days
- 57,798S-3 line 14, col 8
- Beds in use, on an average day
- 158.8days ÷ days in year
- Occupancy
- 78.4%days ÷ bed days
- Medicare share of days
- 10.0%S-3 cols 6 ÷ 8
- Medicaid share of days
- 5.3%S-3 cols 7 ÷ 8
Who owns it
- NORTHWELL HEALTHCARE INC100%
Other hospitals with the same owner: South Shore University Hospital (NY), Huntington Hospital Association (NY), North Shore University Hospital (NY), Peconic Bay Medical Center (NY), Lenox Hill Hospital (NY), Staten Island University Hospital (NY), Northern Westchester Hospital (NY), Glen Cove Hospital (NY), John T Mather Memorial Hospital (NY), Long Island Jewish Medical Center (NY), Phelps Hospital (NY), Plainview Hospital (NY).
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 HOSP10FY2025.ZIP, form CMS-2552-10, filed under CMS certification number 334027. 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 HOSP10FY2025.ZIP, read June 23, 2026.