Port Jefferson, New York
Mather Hospital
Free profile
Acute Beds
195
Acute Beds w/ Subprovider
249
Facility Type
Short Term Acute
Ownership
Voluntary Nonprofit, Other
Medicare Teaching Status
Teaching Hospital
CMS Certification Number
330185
Latest cost report FYE
12/31/25
Free profile data as of September 18, 2026 (HCRIS).
Full financials
Net patient revenue
$379M
Total operating expenses
$392M
Case mix index
1.80
Medicare utilization rate
30%
Download Mather Hospital data (CSV)
Utilization trendsMetric definitions
One point per cost report, labelled by its fiscal year end. Hollow points mark reports covering more or fewer than 12 months or a change of fiscal year end; the tooltip and table view show the period.
Days (Excl Nursery)Total Acute Inpatient Days (Excl Nursery)
Days (Inc Nursery)
Discharges
Avg. Length of Stay (ALOS) Excl NurseryTotal Acute Inpatient Days (Excl Nursery) / Total Acute Inpatient Discharges
Average Daily Census (ADC) Excl NurseryTotal Acute Inpatient Days (Excl Nursery) / Days in Period
Occupancy (Inc Nursery)Total Acute Inpatient (W Nursery) Days / Total Acute Inpatient (W Nursery) Available Days
Occupancy (Excl Nursery)Total Acute Inpatient Days (Excl Nursery) / Total Acute Inpatient Available Days (Excl Nursery)
SQFT: Acute Inpatient
SQFT: Total
IP Gross Revenue
OP Gross Revenue
Misc Non Patient RevenueTotal Non-Patient Revenue [Other Income] - Contributions & Donations - Gov Appropriations - Income from Investments
Net IncomeOperating Income + Non Patient Revenue - Total Other Expense
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