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Short Term Acute Care HospitalVoluntary Non-Profit - Church

Ascension St. Mary S Hospital

Ascension Health · Saginaw, MI

800 South Washington Avenue, Saginaw, MI 48601(989) 776-8000

3 of 5

CMS star rating

181

Beds

5,088

Inpatient discharges a year

$244.7M

Net patient revenue a year

32

In-network payers

About this hospital

Ascension St. Mary S Hospital is a 181-bed voluntary non-profit - church hospital in Saginaw, MI, affiliated with Ascension Health. Below you'll find publicly disclosed negotiated rates and facility details, including 32 in-network payers and 326 disclosed rate categories.

  • Rural referral center
  • Reclassified as rural
  • Disproportionate share hospital
  • 340B participant
  • ACO participant
  • Helipad
CCN
230077
NPI
1871507509
Website
mymichigan.org
Health system
Ascension Health
Teaching
Major teaching hospital
County
Saginaw County
Metro area
Saginaw, MI MSA
Medicare contractor
Jurisdiction 8, WPS Government Health Administrators (08001)
In Medicare since
1966
Last CMS survey
2012

Prices for common services

The 24 services Ascension St. Mary S Hospital 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.

Medicine & Surgery · Inpatient

Major cardiothoracic procedure with cardiac catheterization and MCC

MS-DRG 216

$53,231 - $213,586

from 4 insurers · median $103,146

Blue Cross$213,586
Insurer A*$53,231
Insurer B*$79,856
Insurer C*$126,436
Medicare $90,833Nearby hospitals $117,07412% below nearby hospitals

Hospital reports cardiac thoracic surgery services to CMS

CT imaging

CT abdomen and pelvis with contrast

CPT 74177

$318 - $608

from 2 insurers · median $463

Aetna$318
Insurer A*$608
Medicare $333Nearby hospitals $1,09558% below nearby hospitals

Common here, based on CMS Medicare volume

Medicine & Surgery · Inpatient

Spinal fusion except cervical without MCC

MS-DRG 460

$30,364 - $48,266

from 3 insurers · median $39,943

Blue Cross$39,943
Insurer A*$30,364
Insurer B*$48,266
Medicare $27,950Nearby hospitals $47,15015% below nearby hospitals

Hospital reports neurosurgical services to CMS

Digestive procedures

Upper GI endoscopy with biopsy

CPT 43239

$1,227 - $4,196

from 2 insurers · median $2,711

UnitedHealthcare$4,196
Insurer A*$1,227
Medicare $865Nearby hospitals $861215% above nearby hospitals

Common here, based on CMS Medicare volume

How the insurers pay at Ascension St. Mary S Hospital

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
131%
148
Insurer B*16
126%
141
Insurer C*14
77%
010
Insurer D*1
-
00

How we chose these services: 2 appear in this hospital's own Medicare claims, 11 are common here based on CMS Medicare volume, and 11 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 Ascension St. Mary S Hospital, 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 HealthCareSource (incl Common Ground Health Coop)Centene

More about this hospital

  • Quality

    3 of 5 stars

    • 165 min in the ER before going home (US median 148)
    • Medicare readmissions penalty (-0.06%)
    See quality ratings

  • Doctors and services

    Accredited by The Joint Commission

    • Major teaching hospital
    • 37 services, including trauma care
    • 478 affiliated clinicians
    See doctors and services

  • Finances

    $244.7M net patient revenue

    • Operating margin on patient care -32.8%
    • $15.8M unreimbursed and uncompensated care
    • -$11.4M net income
    See finances

  • Ownership and leadership

    Owned by Mymichigan Medical Center Saginaw

    • Church
    • Michael Erickson, 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 Ascension St. Mary S Hospital in the in-network rate files they publish, with the organization NPIs billed under each.

Tax ID (EIN)Plans and networks listing itOrganization NPIs
38-0997730MyMichigan Medical Center Saginaw56Aetna, Cigna, United Healthcare (incl Optum, Rocky Mountain, Health Plan of Nevada, Sierra Health), Allied Benefit Systems, Ambetter and 51 more1871507509 Mymichigan Medical Center Saginaw1780841262 Mymichigan Medical Center Saginaw1912995465 Mymichigan Medical Center Saginawand 44 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

800 South Washington Avenue, Saginaw, MI 48601

(989) 776-8000

Get directions

Frequently asked questions

About Ascension St. Mary S Hospital's rates and hospital price transparency.

How much does an MRI cost at Ascension St. Mary S Hospital?

For MRI brain before and after contrast (CPT 70553), published negotiated rates at Ascension St. Mary S Hospital range from $270 to $409 across 2 insurers. Aetna's rate is $270. The median at nearby comparable hospitals is $1,082. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a CT scan cost at Ascension St. Mary S Hospital?

For CT abdomen and pelvis with contrast (CPT 74177), published negotiated rates at Ascension St. Mary S Hospital range from $318 to $608 across 2 insurers. Aetna's rate is $318. The median at nearby comparable hospitals is $1,095. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a colonoscopy cost at Ascension St. Mary S Hospital?

For Colonoscopy with biopsy (CPT 45380), published negotiated rates at Ascension St. Mary S Hospital range from $1,256 to $4,196 across 2 insurers. UnitedHealthcare's rate is $4,196. The median at nearby comparable hospitals is $1,015. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does a mammogram cost at Ascension St. Mary S Hospital?

For Screening mammography, bilateral (CPT 77067), published negotiated rates at Ascension St. Mary S Hospital range from $83 to $146 across 2 insurers. Blue Cross Blue Shield's rate is $146. The median at nearby comparable hospitals is $243. What a patient pays depends on their plan's deductible, coinsurance and network status.

How much does hip or knee replacement cost at Ascension St. Mary S Hospital?

For Major lower-extremity joint replacement without MCC (MS-DRG 470), published negotiated rates at Ascension St. Mary S Hospital range from $15,778 to $33,461 across 3 insurers. Blue Cross Blue Shield's rate is $33,461. The median at nearby comparable hospitals is $22,281. What a patient pays depends on their plan's deductible, coinsurance and network status.

What is Ascension St. Mary S Hospital's CMS star rating?

Ascension St. Mary S Hospital 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 Ascension St. Mary S Hospital a teaching hospital?

Yes. CMS counts 0.26 Medicare-funded residents per bed at Ascension St. Mary S Hospital for fiscal year 2027, so it is a major teaching hospital.

Does Medicare penalize Ascension St. Mary S Hospital for readmissions?

Yes. Under the Hospital Readmissions Reduction Program, Medicare cuts Ascension St. Mary S Hospital's base inpatient payments by an estimated 0.06% in fiscal year 2027 for more readmissions than expected.

What are the most common Medicare inpatient stays at Ascension St. Mary S Hospital?

In 2024, the most common were septicemia or severe sepsis without mv >96 hours with mcc (112 discharges), heart failure and shock with mcc (75 discharges), percutaneous and other intracardiac procedures without mcc (49 discharges).

What is Ascension St. Mary S Hospital's case mix index?

Ascension St. Mary S Hospital's Medicare case mix index is 1.93 for fiscal year 2027, higher than 73% of hospitals paid under the inpatient prospective payment system.

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.

Compliance MRF

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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  • Missing, duplicate and outdated charge lines identified
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