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Short Term Acute Care HospitalVoluntary Non-Profit - Private

Advocate Illinois Masonic Medical Center

Advocate Aurora Health · Chicago, IL

836 West Wellington Avenue, Chicago, IL 60657(773) 975-1600

3 of 5

CMS star rating

304

Beds

13,567

Inpatient discharges a year

$982.5M

Net patient revenue a year

39

In-network payers

About this hospital

Advocate Illinois Masonic Medical Center is a 304-bed voluntary non-profit - private hospital in Chicago, IL, affiliated with Advocate Aurora Health. Below you'll find publicly disclosed negotiated rates and facility details, including 39 in-network payers and 445 disclosed rate categories.

  • Rural referral center
  • Reclassified as rural
  • Disproportionate share hospital
  • 340B participant
CCN
140182
NPI
1912014564
Health system
Advocate Aurora Health
Teaching
Major teaching hospital
County
Cook County
Metro area
Chicago-Naperville-Elgin, IL-IN MSA
Medicare contractor
Jurisdiction 6, National Government Services (06101)
In Medicare since
1966
Last CMS survey
2018

Prices for common services

The 24 services Advocate Illinois Masonic Medical Center 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

$9,295 - $11,330

from 4 insurers · median $10,351

Cigna$9,295
Insurer A*$9,635
Insurer B*$11,067
Insurer C*$11,330

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

$13,002 - $16,113

from 4 insurers · median $14,554

Cigna$13,107
Insurer A*$13,002
Insurer B*$16,001
Insurer C*$16,113

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

Gynecology

Hysteroscopy with sampling of the uterine lining

CPT 58558

$8,403 - $9,750

from 2 insurers · median $9,076

Aetna$8,403
Insurer A*$9,750
Medicare $3,267Nearby hospitals $2,446271% above nearby hospitals

11 Medicare claims in Level 4 Gynecologic Procedures (CMS 2024)

CT imaging

CT abdomen and pelvis with contrast

CPT 74177

$298 - $1,452

from 4 insurers · median $811

BCBS Illinois$1,452
Insurer A*$298
Insurer B*$653
Insurer C*$969
Medicare $352Nearby hospitals $61133% above nearby hospitals

Common here, based on CMS Medicare volume

How the insurers pay at Advocate Illinois Masonic Medical Center

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*13
453%
73
Insurer B*14
260%
71
Insurer C*23
248%
200
Insurer D*24
197%
144

How we chose these services: 5 appear in this hospital's own Medicare claims, 11 are common here based on CMS Medicare volume, and 8 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 Advocate Illinois Masonic Medical Center, 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)
AmbetterAmeri HealthAspirus Health PlanAvera Health PlansBanner HealthCentene

More about this hospital

  • Quality

    3 of 5 stars

    • 237 min in the ER before going home (US median 148)
    • Medicare readmissions penalty (-0.27%)
    See quality ratings
  • Doctors and services

    Accredited by DNV

    • Major teaching hospital
    • 44 services, including trauma care
    • 894 affiliated clinicians
    See doctors and services
  • Finances

    $982.5M net patient revenue

    • Operating margin on patient care 12.0%
    • $22.1M unreimbursed and uncompensated care
    • $274.5M net income
    See finances
  • Ownership and leadership

    Owned by Advocate Aurora Health, Inc.

    • Private (not for profit)
    • Dia Nichols, chief executive
    • 340B drug pricing program participant
    See ownership and leadership

Tax IDs and NPIs insurers list

The employer identification numbers (EINs) health plans and networks list for Advocate Illinois Masonic Medical Center in the in-network rate files they publish, with the organization NPIs billed under each.

Tax ID (EIN)Plans and networks listing itOrganization NPIs
36-3196629Advocate Illinois Masonic Medical Center67Aetna, Cigna, United Healthcare (incl Optum, Rocky Mountain, Health Plan of Nevada, Sierra Health), Allied Benefit Systems, Ambetter and 62 more1912014564 Advocate North Side Health Network1639657414 Advocate North Side Health Network1780788323 Advocate North Side Health Networkand 12 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

836 West Wellington Avenue, Chicago, IL 60657

(773) 975-1600

Get directions

Frequently asked questions

About Advocate Illinois Masonic Medical Center's rates and hospital price transparency.

How much does an MRI cost at Advocate Illinois Masonic Medical Center?

For MRI brain before and after contrast (CPT 70553), published negotiated rates at Advocate Illinois Masonic Medical Center range from $298 to $2,509 across 4 insurers. UnitedHealthcare's rate is $298. The median at nearby comparable hospitals is $525. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a CT scan cost at Advocate Illinois Masonic Medical Center?

For CT abdomen and pelvis with contrast (CPT 74177), published negotiated rates at Advocate Illinois Masonic Medical Center range from $298 to $1,452 across 4 insurers. Blue Cross Blue Shield of Illinois's rate is $1,452. The median at nearby comparable hospitals is $611. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a colonoscopy cost at Advocate Illinois Masonic Medical Center?

For Colonoscopy with biopsy (CPT 45380), published negotiated rates at Advocate Illinois Masonic Medical Center range from $3,499 to $3,661 across 2 insurers. Aetna's rate is $3,499. The median at nearby comparable hospitals is $1,741. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does giving birth cost at Advocate Illinois Masonic Medical Center?

For Vaginal delivery, hospital stay (MS-DRG 807), published negotiated rates at Advocate Illinois Masonic Medical Center range from $9,295 to $11,330 across 4 insurers. Cigna's rate is $9,295. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a mammogram cost at Advocate Illinois Masonic Medical Center?

For Screening mammography, bilateral (CPT 77067), published negotiated rates at Advocate Illinois Masonic Medical Center range from $92 to $424 across 4 insurers. Cigna's rate is $231. The median at nearby comparable hospitals is $156. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does hip or knee replacement cost at Advocate Illinois Masonic Medical Center?

For Major lower-extremity joint replacement without MCC (MS-DRG 470), published negotiated rates at Advocate Illinois Masonic Medical Center range from $22,585 to $32,415 across 4 insurers. UnitedHealthcare's rate is $26,071. The median at nearby comparable hospitals is $22,072. What a patient pays depends on their plan's deductible, coinsurance and network status.

What is Advocate Illinois Masonic Medical Center's CMS star rating?

Advocate Illinois Masonic Medical Center has a CMS overall hospital star rating of 3 out of 5 on Medicare Care Compare (CMS data released 2026-08-13). That is lower than 42% of US hospitals.

Is Advocate Illinois Masonic Medical Center a teaching hospital?

Yes. CMS counts 0.82 Medicare-funded residents per bed at Advocate Illinois Masonic Medical Center for fiscal year 2027, so it is a major teaching hospital.

Does Medicare penalize Advocate Illinois Masonic Medical Center for readmissions?

Yes. Under the Hospital Readmissions Reduction Program, Medicare cuts Advocate Illinois Masonic Medical Center's base inpatient payments by an estimated 0.27% in fiscal year 2027 for more readmissions than expected.

What are the most common Medicare inpatient stays at Advocate Illinois Masonic Medical Center?

In 2024, the most common were septicemia or severe sepsis without mv >96 hours with mcc (142 discharges), heart failure and shock with mcc (111 discharges), miscellaneous disorders of nutrition, metabolism, fluids and electrolytes with mcc (40 discharges).

For hospital finance and compliance teams

Running price transparency at a hospital like this one?

The data on this page comes from the files hospitals and payers publish. We help hospitals publish theirs correctly, and take a fresh look at their chargemaster.

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Publish a CMS-compliant machine-readable file

We turn your chargemaster and payer contracts into the CMS template file, then keep it current as rates change.

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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  • cms-hpt.txt file and homepage footer link
  • Refreshed when your contracts change
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Your chargemaster sets the gross charge on every claim, and many payer contracts base payment on it through percent-of-charge, lesser-of and stop-loss terms. We audit it line by line and show how your charges and negotiated rates compare with peer hospitals before your next negotiation.

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CodingPricingPayer contractsCompliance
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  • Missing, duplicate and outdated charge lines identified
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