California / St Mary Medical Center
CMS certification 050191 · Long Beach, CA
St Mary Medical Center: charges and Medicare payments
St Mary Medical Center reported 812 Medicare inpatient stays across 26 DRGs in 2024. Across them it charged 5.79 times what it was paid — mid-range in California, number 97 of 247 hospitals with at least 100 stays (state median 5.18×, national 4.15×). Its most frequent stay was DRG 871, Septicemia or Severe Sepsis without MV >96 Hours with MCC: 270 stays at an average charge of $133,043, 47% above the national average. It also billed 245 outpatient services, charging 8.71 times what Medicare paid.
- 1Medicare inpatient stays 812
- 2Charge ÷ paid, inpatient 5.79×
- 3Rank in CA (highest ratio = 1) 97 of 247
- 4CMS price-transparency actions 0
Inpatient stays
For the 26 DRGs that can be compared with the national average, St Mary Medical Center charged more than the national average in 25 (96%). 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 | 270 | $133,043 | +47% | $22,542 |
| 291 Heart Failure and Shock with MCC | 52 | $86,466 | +53% | $15,313 |
| 853 Infectious and Parasitic Diseases with O.R. Procedures with... | 49 | $379,536 | +66% | $61,402 |
| 280 Acute Myocardial Infarction, Discharged Alive with MCC | 41 | $107,399 | +42% | $19,502 |
| 872 Septicemia or Severe Sepsis without MV >96 Hours without MCC | 40 | $66,087 | +35% | $12,635 |
| 640 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and... | 29 | $82,386 | +37% | $15,182 |
| 064 Intracranial Hemorrhage or Cerebral Infarction with MCC | 24 | $111,670 | +12% | $20,869 |
| 193 Simple Pneumonia and Pleurisy with MCC | 24 | $85,188 | +43% | $15,372 |
| 698 Other Kidney and Urinary Tract Diagnoses with MCC | 23 | $112,767 | +54% | $18,986 |
| 100 Seizures with MCC | 22 | $119,325 | +26% | $23,680 |
| 190 Chronic Obstructive Pulmonary Disease with MCC | 22 | $90,260 | +78% | $13,046 |
| 682 Renal Failure with MCC | 20 | $125,490 | +90% | $20,943 |
| 189 Pulmonary Edema and Respiratory Failure | 19 | $76,877 | +34% | $14,928 |
| 481 Hip and Femur Procedures except Major Joint with CC | 19 | $139,722 | +39% | $22,655 |
| 177 Respiratory Infections and Inflammations with MCC | 17 | $134,258 | +90% | $17,456 |
| 065 Intracranial Hemorrhage or Cerebral Infarction with CC or... | 16 | $87,580 | +57% | $12,620 |
| 870 Septicemia or Severe Sepsis with MV >96 Hours | 16 | $323,137 | 0% | $81,428 |
| 281 Acute Myocardial Infarction, Discharged Alive with CC | 14 | $73,064 | +45% | $11,446 |
| 321 Percutaneous Cardiovascular Procedures with Intraluminal... | 14 | $244,961 | +50% | $35,229 |
| 208 Respiratory System Diagnosis with Ventilator Support <=96... | 12 | $204,192 | +50% | $31,246 |
| 552 Medical Back Problems without MCC | 12 | $60,052 | +23% | $10,039 |
| 637 Diabetes with MCC | 12 | $92,913 | +40% | $17,363 |
| 699 Other Kidney and Urinary Tract Diagnoses with CC | 12 | $60,337 | +27% | $12,634 |
| 312 Syncope and Collapse | 11 | $65,349 | +44% | $9,938 |
| 641 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and... | 11 | $57,386 | +55% | $9,959 |
| 689 Kidney and Urinary Tract Infections with MCC | 11 | $79,058 | +54% | $14,425 |
Outpatient services
| Service (APC) | Services | Avg charge | Medicare allowed |
|---|---|---|---|
| Comprehensive Observation Services | 88 | $29,578 | $3,365 |
| Level 4 Urology and Related Services | 24 | $20,432 | $4,286 |
| Level 2 Urology and Related Services | 23 | $2,749 | $840 |
| Level 2 Excision/ Biopsy/ Incision and Drainage | 17 | $12,236 | $1,900 |
| Level 4 Vascular Procedures | 17 | $56,760 | $6,756 |
| Level 1 Laparoscopy and Related Services | 14 | $50,934 | $7,094 |
| Level 5 Urology and Related Services | 14 | $29,225 | $6,362 |
| Level 3 Excision/ Biopsy/ Incision and Drainage | 12 | $16,973 | $3,494 |
| Level 1 Endovascular Procedures | 12 | $32,420 | $4,013 |
| Level 3 Endovascular Procedures | 12 | $81,445 | $13,503 |
| Level 3 Urology and Related Services | 12 | $19,611 | $2,504 |
Against the California average
For Septicemia or Severe Sepsis without MV >96 Hours with MCC (DRG 871), St Mary Medical Center charged $133,043 on average, 7% less than the California average of $143,063, and was paid $22,542 against a state average of $23,020. For Heart Failure and Shock with MCC (DRG 291), St Mary Medical Center charged $86,466 on average, 14% less than the California average of $100,739, and was paid $15,313 against a state average of $15,556. For Infectious and Parasitic Diseases with O.R. Procedures with MCC (DRG 853), St Mary Medical Center charged $379,536 on average, 1% more than the California average of $375,466, and was paid $61,402 against a state average of $62,077. For Acute Myocardial Infarction, Discharged Alive with MCC (DRG 280), St Mary Medical Center charged $107,399 on average, 13% less than the California average of $123,896, and was paid $19,502 against a state average of $19,122. For Comprehensive Observation Services (outpatient APC 8011), its average charge of $29,578 was 29% below the state average of $41,628. For Level 4 Urology and Related Services (outpatient APC 5374), its average charge of $20,432 was 44% below the state average of $36,378. For Level 2 Urology and Related Services (outpatient APC 5372), its average charge of $2,749 was 43% below the state average of $4,853. For Level 2 Excision/ Biopsy/ Incision and Drainage (outpatient APC 5072), its average charge of $12,236 was 17% below the state average of $14,749.
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.