Michigan / Ascension St Mary's Hospital
CMS certification 230077 · Saginaw, MI
Ascension St Mary's Hospital: charges and Medicare payments
Ascension St Mary's Hospital reported 832 Medicare inpatient stays across 33 DRGs in 2024. Across them it charged 3.59 times what it was paid — among the higher ratios in Michigan, number 20 of 76 hospitals with at least 100 stays (state median 3.09×, national 4.15×). Its most frequent stay was DRG 871, Septicemia or Severe Sepsis without MV >96 Hours with MCC: 112 stays at an average charge of $52,817, 42% below the national average. It also billed 846 outpatient services, charging 5.44 times what Medicare paid.
- 1Medicare inpatient stays 832
- 2Charge ÷ paid, inpatient 3.59×
- 3Rank in MI (highest ratio = 1) 20 of 76
- 4CMS price-transparency actions 0
Inpatient stays
For the 33 DRGs that can be compared with the national average, Ascension St Mary's Hospital charged more than the national average in 0 (0%). Payments follow Medicare's rates, so they usually vary far less than charges.
| DRG | Stays | Avg charge | vs US | Avg paid |
|---|---|---|---|---|
| 871 Septicemia or Severe Sepsis without MV >96 Hours with MCC | 112 | $52,817 | -42% | $14,526 |
| 291 Heart Failure and Shock with MCC | 75 | $33,751 | -40% | $10,548 |
| 274 Percutaneous and Other Intracardiac Procedures without MCC | 49 | $54,963 | -65% | $23,673 |
| 065 Intracranial Hemorrhage or Cerebral Infarction with CC or... | 38 | $38,232 | -31% | $7,850 |
| 064 Intracranial Hemorrhage or Cerebral Infarction with MCC | 34 | $69,715 | -30% | $15,283 |
| 193 Simple Pneumonia and Pleurisy with MCC | 27 | $39,098 | -35% | $9,421 |
| 853 Infectious and Parasitic Diseases with O.R. Procedures with... | 26 | $112,372 | -51% | $36,856 |
| 189 Pulmonary Edema and Respiratory Failure | 25 | $35,143 | -39% | $9,742 |
| 682 Renal Failure with MCC | 24 | $36,973 | -44% | $11,220 |
| 309 Cardiac Arrhythmia and Conduction Disorders with CC | 23 | $23,058 | -36% | $5,971 |
| 481 Hip and Femur Procedures except Major Joint with CC | 23 | $67,500 | -33% | $15,685 |
| 552 Medical Back Problems without MCC | 23 | $29,192 | -40% | $7,415 |
| 683 Renal Failure with CC | 22 | $32,567 | -20% | $6,922 |
| 280 Acute Myocardial Infarction, Discharged Alive with MCC | 21 | $50,200 | -34% | $11,962 |
| 322 Percutaneous Cardiovascular Procedures with Intraluminal... | 21 | $84,129 | -27% | $13,793 |
| 330 Major Small and Large Bowel Procedures with CC | 21 | $51,876 | -56% | $17,524 |
| 069 Transient Ischemia without Thrombolytic | 20 | $33,687 | -33% | $6,243 |
| 177 Respiratory Infections and Inflammations with MCC | 19 | $36,639 | -48% | $11,755 |
| 287 Circulatory Disorders except AMI, with Cardiac... | 19 | $42,487 | -33% | $8,272 |
| 310 Cardiac Arrhythmia and Conduction Disorders without CC/MCC | 19 | $24,825 | -14% | $4,609 |
| 392 Esophagitis, Gastroenteritis and Miscellaneous Digestive... | 19 | $18,161 | -55% | $6,182 |
| 312 Syncope and Collapse | 18 | $26,539 | -42% | $6,903 |
| 023 Craniotomy with Major Device Implant or Acute Complex Cns... | 17 | $176,663 | -37% | $48,397 |
| 267 Endovascular Cardiac Valve Replacement and Supplement... | 17 | $99,562 | -55% | $35,259 |
| 690 Kidney and Urinary Tract Infections without MCC | 16 | $20,736 | -45% | $6,251 |
| 025 Craniotomy and Endovascular Intracranial Procedures with MCC | 15 | $116,537 | -50% | $32,410 |
| 308 Cardiac Arrhythmia and Conduction Disorders with MCC | 14 | $36,529 | -36% | $9,576 |
| 378 Gastrointestinal Hemorrhage with CC | 14 | $38,120 | -21% | $7,420 |
| 480 Hip and Femur Procedures except Major Joint with MCC | 14 | $79,710 | -43% | $21,849 |
| 872 Septicemia or Severe Sepsis without MV >96 Hours without MCC | 13 | $27,701 | -44% | $7,950 |
| 281 Acute Myocardial Infarction, Discharged Alive with CC | 12 | $30,448 | -40% | $7,062 |
| 313 Chest Pain | 11 | $16,221 | -59% | $5,666 |
| 689 Kidney and Urinary Tract Infections with MCC | 11 | $21,719 | -58% | $8,598 |
Outpatient services
Against the Michigan average
For Septicemia or Severe Sepsis without MV >96 Hours with MCC (DRG 871), Ascension St Mary's Hospital charged $52,817 on average, 3% less than the Michigan average of $54,260, and was paid $14,526 against a state average of $17,096. For Heart Failure and Shock with MCC (DRG 291), Ascension St Mary's Hospital charged $33,751 on average, 6% less than the Michigan average of $35,827, and was paid $10,548 against a state average of $11,565. For Percutaneous and Other Intracardiac Procedures without MCC (DRG 274), Ascension St Mary's Hospital charged $54,963 on average, 38% less than the Michigan average of $89,112, and was paid $23,673 against a state average of $27,005. For Intracranial Hemorrhage or Cerebral Infarction with CC or Tpa in 24 Hours (DRG 065), Ascension St Mary's Hospital charged $38,232 on average, 4% more than the Michigan average of $36,870, and was paid $7,850 against a state average of $9,396. For Comprehensive Observation Services (outpatient APC 8011), its average charge of $12,959 was 16% below the state average of $15,355. For Level 1 Endovascular Procedures (outpatient APC 5191), its average charge of $25,181 was 46% above the state average of $17,272. For Level 2 Excision/ Biopsy/ Incision and Drainage (outpatient APC 5072), its average charge of $6,384 was 13% below the state average of $7,344. For Level 2 Pacemaker and Similar Procedures (outpatient APC 5222), its average charge of $27,651 was 22% below the state average of $35,586.
Price-transparency record
No action in CMS's price-transparency enforcement list (July 2026) matches this hospital's exact name, city and state. That can mean CMS has not reviewed it, or that it is listed under a different name.
Charges are the hospital's list prices averaged over its 2024 Medicare cases; payments are what those cases actually brought in. Neither is what you will pay. For a planned procedure, ask the hospital for its price estimate or, if you are uninsured or self-paying, a good-faith estimate.
Sources: CMS Medicare Inpatient Hospitals — by Provider and Service / by Geography and Service, data year 2024; CMS Medicare Outpatient Hospitals — by Provider and Service / by Geography and Service, data year 2024; CMS Hospital Price Transparency Enforcement Activities and Outcomes, July 2026. Checked 2026-10-24. Methodology.