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Short Term Acute Care HospitalVoluntary Non-Profit - Private

St. Catherine Of Siena Medical Cente

Catholic Health Services of Long Island · Smithtown, NY

50 Route 25-A, Smithtown, NY 11787(631) 862-3000

5 of 5

CMS star rating

445

Beds

8,395

Inpatient discharges a year

$267.7M

Net patient revenue a year

36

In-network payers

About this hospital

St. Catherine Of Siena Medical Cente is a 445-bed voluntary non-profit - private hospital in Smithtown, NY, affiliated with Catholic Health Services of Long Island. Below you'll find publicly disclosed negotiated rates and facility details, including 36 in-network payers and 375 disclosed rate categories.

CCN
330401
NPI
1982663423
Health system
Catholic Health Services of Long Island
Teaching
No Medicare-funded residents
County
Suffolk County
Metro area
New York-Newark-Jersey City, NY-NJ MSA
Medicare contractor
Jurisdiction K, National Government Services (13001)
In Medicare since
2000
Last CMS survey
2022

Prices for common services

The 24 services St. Catherine Of Siena Medical Cente most likely performs, ranked by likely volume and what it is paid. Each service names one insurer. * marks hidden insurer names; A, B and C rank the remaining rates from low to high and reset for each service.

Book a demo to see hidden insurer names, more payer rates, and hospital data, or start a free trial.

Childbirth · Inpatient

Vaginal delivery, hospital stay

MS-DRG 807

$11,443 - $12,611

from 4 insurers · median $11,921

UnitedHealthcare$11,832
Insurer A*$11,443
Insurer B*$12,010
Insurer C*$12,611

CMS lists this service as CPT 59400, the obstetrician's global fee. The hospital bills the delivery stay as MS-DRG 807, so these are facility case rates.

Hospital reports neonatal nursery services to CMS

Childbirth · Inpatient

Cesarean delivery, hospital stay

MS-DRG 788

$15,648 - $20,067

from 4 insurers · median $16,217

UnitedHealthcare$15,920
Insurer A*$15,648
Insurer B*$16,514
Insurer C*$20,067

CMS lists this service as CPT 59510, the obstetrician's global fee. The hospital bills the delivery stay as MS-DRG 788, so these are facility case rates.

Hospital reports neonatal nursery services to CMS

Medicine & Surgery · Inpatient

Spinal fusion except cervical without MCC

MS-DRG 460

$64,003 - $82,759

from 4 insurers · median $67,362

Aetna$67,971
Insurer A*$64,003
Insurer B*$66,753
Insurer C*$82,759
Medicare $26,411Nearby hospitals $90,33725% below nearby hospitals

18 Medicare discharges for this DRG in CMS hospital data

Medicine & Surgery · Inpatient

Major cardiothoracic procedure with cardiac catheterization and MCC

MS-DRG 216

$185,286 - $264,266

from 4 insurers · median $211,939

Aetna$264,266
Insurer A*$185,286
Insurer B*$208,165
Insurer C*$215,714
Medicare $90,833Nearby hospitals $271,30722% below nearby hospitals

Hospital reports cardiac thoracic surgery services to CMS

How the insurers pay at St. Catherine Of Siena Medical Cente

Median rate as a percent of Medicare across the outpatient services above, and how many services sit above or below the same insurer's median at nearby hospitals. * marks hidden insurer names. These table labels track the same insurers across services; the labels on each service card reset.

InsurerServicesMedian % of MedicareAbove nearbyBelow nearby
Insurer A*24
256%
55
Insurer B*24
232%
415
Insurer C*24
218%
66
Insurer D*24
215%
29

How we chose these services: 6 appear in this hospital's own Medicare claims, 12 are common here based on CMS Medicare volume, and 6 are typical for the service lines it reports to CMS. Rates come from insurer and hospital price transparency files as of October 2026. Rates under a quarter of Medicare or over 20 times Medicare are left out as likely physician-fee rows or file errors. Book a demo to see all 300 CMS shoppable services for St. Catherine Of Siena Medical Cente, or start a free trial.

Insurance Accepted

Acceptance varies by plan and service. Confirm coverage with your insurer or the hospital's billing department.

Medicare
Aetna
BCBS
Cigna
United Healthcare (incl Optum, Rocky Mountain, Health Plan of Nevada, Sierra Health)
Ameri HealthAspirus Health PlanAvera Health PlansBanner HealthCenteneEMI Health

More about this hospital

  • Quality

    5 of 5 stars

    • 206 min in the ER before going home (US median 148)
    • No Medicare readmissions penalty
    See quality ratings
  • Doctors and services

    Accredited by The Joint Commission

    • No Medicare-funded residents
    • 34 services
    • 498 affiliated clinicians
    See doctors and services
  • Finances

    $267.7M net patient revenue

    • Operating margin on patient care -24.2%
    • $8.5M unreimbursed and uncompensated care
    • -$57.3M net income
    See finances
  • Ownership and leadership

    Owned by Catholic Health System of Long Island Inc

    • Church
    • Patrick M O'Shaughnessy, chief executive
    See ownership and leadership

Tax IDs and NPIs insurers list

The employer identification numbers (EINs) health plans and networks list for St. Catherine Of Siena Medical Cente in the in-network rate files they publish, with the organization NPIs billed under each.

Tax ID (EIN)Plans and networks listing itOrganization NPIs
06-1562701St Catherine Of Siena Medical Center58Aetna, Cigna, United Healthcare (incl Optum, Rocky Mountain, Health Plan of Nevada, Sierra Health), Allied Benefit Systems, Ameri Health and 53 more1982663423 St. Catherine Of Siena Medical Center1497741763 St. Catherine Of Siena Medical Center1407815830 St. Catherine Of Siena Medical Centerand 9 more

Source: PayerPrice analysis of insurers' Transparency in Coverage in-network files. An EIN can cover several hospitals and clinics in a health system, and insurers sometimes list other organizations' NPIs under it.

Location

50 Route 25-A, Smithtown, NY 11787

(631) 862-3000

Get directions

Frequently asked questions

About St. Catherine Of Siena Medical Cente's rates and hospital price transparency.

How much does a CT scan cost at St. Catherine Of Siena Medical Cente?

For CT abdomen and pelvis with contrast (CPT 74177), published negotiated rates at St. Catherine Of Siena Medical Cente range from $676 to $828 across 4 insurers. Cigna's rate is $777. The median at nearby comparable hospitals is $694. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a colonoscopy cost at St. Catherine Of Siena Medical Cente?

For Colonoscopy with biopsy (CPT 45380), published negotiated rates at St. Catherine Of Siena Medical Cente range from $2,579 to $4,243 across 4 insurers. Blue Cross Blue Shield's rate is $3,485. The median at nearby comparable hospitals is $3,350. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does giving birth cost at St. Catherine Of Siena Medical Cente?

For Vaginal delivery, hospital stay (MS-DRG 807), published negotiated rates at St. Catherine Of Siena Medical Cente range from $11,443 to $12,611 across 4 insurers. UnitedHealthcare's rate is $11,832. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a mammogram cost at St. Catherine Of Siena Medical Cente?

For Screening mammography, bilateral (CPT 77067), published negotiated rates at St. Catherine Of Siena Medical Cente range from $217 to $297 across 4 insurers. Cigna's rate is $297. The median at nearby comparable hospitals is $214. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does hip or knee replacement cost at St. Catherine Of Siena Medical Cente?

For Major lower-extremity joint replacement without MCC (MS-DRG 470), published negotiated rates at St. Catherine Of Siena Medical Cente range from $34,778 to $43,096 across 4 insurers. Aetna's rate is $37,618. The median at nearby comparable hospitals is $55,311. What a patient pays depends on their plan's deductible, coinsurance and network status.

What is St. Catherine Of Siena Medical Cente's CMS star rating?

St. Catherine Of Siena Medical Cente has a CMS overall hospital star rating of 5 out of 5 on Medicare Care Compare (CMS data released 2026-08-13). That is the top rating, shared by 12% of US hospitals.

Is St. Catherine Of Siena Medical Cente a teaching hospital?

CMS reports no Medicare-funded interns or residents at St. Catherine Of Siena Medical Cente for fiscal year 2027.

Does Medicare penalize St. Catherine Of Siena Medical Cente for readmissions?

No. St. Catherine Of Siena Medical Cente has no Hospital Readmissions Reduction Program penalty in fiscal year 2027.

What are the most common Medicare inpatient stays at St. Catherine Of Siena Medical Cente?

In 2024, the most common were septicemia or severe sepsis without mv >96 hours with mcc (496 discharges), heart failure and shock with mcc (152 discharges), esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc (124 discharges).

What is St. Catherine Of Siena Medical Cente's case mix index?

St. Catherine Of Siena Medical Cente's Medicare case mix index is 1.59 for fiscal year 2027, higher than 39% of hospitals paid under the inpatient prospective payment system.

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CMS v3 example: standard_charge_information[0]
{
  "description": "MRI of brain (no contrast)",
  "code_information": [
    { "code": "611", "type": "RC" },
    { "code": "70551", "type": "CPT" }
  ],
  "standard_charges": [{
    "setting": "outpatient",
    "minimum": 250,
    "maximum": 400,
    "gross_charge": 1200,
    "discounted_cash": 1080,
    "payers_information": [
      {
        "payer_name": "Platform Health Insurance",
        "plan_name": "PPO",
        "methodology": "fee schedule",
        "standard_charge_dollar": 400
      },
      {
        "payer_name": "Region Health Insurance",
        "plan_name": "HMO",
        "methodology": "fee schedule",
        "standard_charge_dollar": 250
      }
    ]
  }]
}
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