Michigan / Ascension Macomb Oakland Hosp-Warren Campus
CMS certification 230195 · Warren, MI · 1 entry in CMS's price-transparency list
Ascension Macomb Oakland Hosp-Warren Campus: charges and Medicare payments
Ascension Macomb Oakland Hosp-Warren Campus reported 2,782 Medicare inpatient stays across 83 DRGs in 2024. Across them it charged 3.08 times what it was paid — mid-range in Michigan, number 41 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: 366 stays at an average charge of $49,956, 45% below the national average. It also billed 2,121 outpatient services, charging 6.77 times what Medicare paid.
- 1Medicare inpatient stays 2,782
- 2Charge ÷ paid, inpatient 3.08×
- 3Rank in MI (highest ratio = 1) 41 of 76
- 4CMS price-transparency actions 1
Inpatient stays
For the 83 DRGs that can be compared with the national average, Ascension Macomb Oakland Hosp-Warren Campus charged more than the national average in 1 (1%). 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 | 366 | $49,956 | -45% | $16,499 |
| 280 Acute Myocardial Infarction, Discharged Alive with MCC | 216 | $45,838 | -40% | $13,665 |
| 291 Heart Failure and Shock with MCC | 148 | $31,507 | -44% | $11,137 |
| 193 Simple Pneumonia and Pleurisy with MCC | 106 | $33,374 | -44% | $11,341 |
| 177 Respiratory Infections and Inflammations with MCC | 79 | $37,878 | -46% | $13,994 |
| 853 Infectious and Parasitic Diseases with O.R. Procedures with... | 79 | $109,522 | -52% | $38,652 |
| 682 Renal Failure with MCC | 66 | $37,754 | -43% | $11,875 |
| 189 Pulmonary Edema and Respiratory Failure | 65 | $32,648 | -43% | $10,692 |
| 640 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and... | 59 | $34,529 | -43% | $11,316 |
| 321 Percutaneous Cardiovascular Procedures with Intraluminal... | 50 | $96,952 | -41% | $24,784 |
| 872 Septicemia or Severe Sepsis without MV >96 Hours without MCC | 50 | $23,190 | -53% | $9,102 |
| 698 Other Kidney and Urinary Tract Diagnoses with MCC | 48 | $42,355 | -42% | $13,904 |
| 281 Acute Myocardial Infarction, Discharged Alive with CC | 43 | $28,532 | -43% | $8,101 |
| 689 Kidney and Urinary Tract Infections with MCC | 43 | $27,597 | -46% | $10,169 |
| 064 Intracranial Hemorrhage or Cerebral Infarction with MCC | 42 | $48,353 | -52% | $16,589 |
| 392 Esophagitis, Gastroenteritis and Miscellaneous Digestive... | 40 | $21,968 | -45% | $6,997 |
| 870 Septicemia or Severe Sepsis with MV >96 Hours | 36 | $132,834 | -59% | $51,954 |
| 481 Hip and Femur Procedures except Major Joint with CC | 35 | $65,406 | -35% | $18,148 |
| 683 Renal Failure with CC | 34 | $22,404 | -45% | $8,573 |
| 190 Chronic Obstructive Pulmonary Disease with MCC | 32 | $30,478 | -40% | $9,894 |
| 603 Cellulitis without MCC | 32 | $19,498 | -48% | $8,012 |
| 811 Red Blood Cell Disorders with MCC | 32 | $41,654 | -39% | $12,025 |
| 377 Gastrointestinal Hemorrhage with MCC | 31 | $46,601 | -45% | $15,301 |
| 637 Diabetes with MCC | 31 | $30,901 | -54% | $12,187 |
| 065 Intracranial Hemorrhage or Cerebral Infarction with CC or... | 30 | $38,122 | -32% | $9,512 |
| 101 Seizures without MCC | 30 | $26,261 | -46% | $8,101 |
| 378 Gastrointestinal Hemorrhage with CC | 30 | $36,102 | -26% | $8,916 |
| 812 Red Blood Cell Disorders without MCC | 29 | $23,655 | -47% | $8,091 |
| 641 Miscellaneous Disorders of Nutrition, Metabolism, Fluids and... | 27 | $22,104 | -40% | $7,024 |
| 309 Cardiac Arrhythmia and Conduction Disorders with CC | 26 | $25,619 | -29% | $6,835 |
| 690 Kidney and Urinary Tract Infections without MCC | 26 | $23,963 | -37% | $7,484 |
| 391 Esophagitis, Gastroenteritis and Miscellaneous Digestive... | 24 | $32,075 | -47% | $11,271 |
| 552 Medical Back Problems without MCC | 23 | $24,158 | -51% | $8,879 |
| 312 Syncope and Collapse | 21 | $23,146 | -49% | $7,513 |
| 069 Transient Ischemia without Thrombolytic | 20 | $37,692 | -25% | $7,959 |
| 208 Respiratory System Diagnosis with Ventilator Support <=96... | 20 | $58,153 | -57% | $22,765 |
| 314 Other Circulatory System Diagnoses with MCC | 20 | $64,991 | -31% | $18,459 |
| 393 Other Digestive System Diagnoses with MCC | 20 | $42,897 | -44% | $14,419 |
| 522 Hip Replacement with Principal Diagnosis of Hip Fracture... | 20 | $61,533 | -40% | $17,380 |
| 308 Cardiac Arrhythmia and Conduction Disorders with MCC | 19 | $37,730 | -33% | $10,993 |
| 472 Cervical Spinal Fusion with CC | 19 | $71,377 | -50% | $25,565 |
| 282 Acute Myocardial Infarction, Discharged Alive without CC/MCC | 18 | $28,974 | -33% | $6,665 |
| 305 Hypertension without MCC | 18 | $20,892 | -48% | $7,146 |
| 388 Gastrointestinal Obstruction with MCC | 18 | $29,653 | -57% | $12,612 |
| 389 Gastrointestinal Obstruction with CC | 18 | $23,456 | -40% | $7,331 |
| 638 Diabetes with CC | 18 | $23,123 | -45% | $8,218 |
| 884 Organic Disturbances and Intellectual Disability | 18 | $39,139 | -37% | $13,512 |
| 981 Extensive O.R. Procedures Unrelated To Principal Diagnosis... | 18 | $131,996 | -39% | $36,584 |
| 092 Other Disorders of Nervous System with CC | 17 | $39,551 | -23% | $9,417 |
| 194 Simple Pneumonia and Pleurisy with CC | 17 | $19,074 | -50% | $7,382 |
| 242 Permanent Cardiac Pacemaker Implant with MCC | 17 | $99,436 | -38% | $28,389 |
| 283 Acute Myocardial Infarction, Expired with MCC | 17 | $66,159 | -36% | $17,109 |
| 287 Circulatory Disorders except AMI, with Cardiac... | 17 | $49,185 | -23% | $10,253 |
| 310 Cardiac Arrhythmia and Conduction Disorders without CC/MCC | 17 | $16,837 | -41% | $5,066 |
| 480 Hip and Femur Procedures except Major Joint with MCC | 17 | $84,685 | -39% | $24,062 |
| 699 Other Kidney and Urinary Tract Diagnoses with CC | 17 | $17,522 | -63% | $8,260 |
| 100 Seizures with MCC | 16 | $39,511 | -58% | $16,764 |
| 175 Pulmonary Embolism with MCC or Acute Cor Pulmonale | 16 | $41,591 | -36% | $12,390 |
| 322 Percutaneous Cardiovascular Procedures with Intraluminal... | 16 | $68,764 | -40% | $16,739 |
| 091 Other Disorders of Nervous System with MCC | 15 | $40,791 | -51% | $14,846 |
Showing the 60 most frequent of 83 DRGs.
Outpatient services
Against the Michigan average
For Septicemia or Severe Sepsis without MV >96 Hours with MCC (DRG 871), Ascension Macomb Oakland Hosp-Warren Campus charged $49,956 on average, 8% less than the Michigan average of $54,260, and was paid $16,499 against a state average of $17,096. For Acute Myocardial Infarction, Discharged Alive with MCC (DRG 280), Ascension Macomb Oakland Hosp-Warren Campus charged $45,838 on average, 4% less than the Michigan average of $47,816, and was paid $13,665 against a state average of $13,931. For Heart Failure and Shock with MCC (DRG 291), Ascension Macomb Oakland Hosp-Warren Campus charged $31,507 on average, 12% less than the Michigan average of $35,827, and was paid $11,137 against a state average of $11,565. For Simple Pneumonia and Pleurisy with MCC (DRG 193), Ascension Macomb Oakland Hosp-Warren Campus charged $33,374 on average, 7% less than the Michigan average of $35,850, and was paid $11,341 against a state average of $11,562. For Comprehensive Observation Services (outpatient APC 8011), its average charge of $9,931 was 35% below the state average of $15,355. For Level 4 Urology and Related Services (outpatient APC 5374), its average charge of $21,167 was 25% above the state average of $16,877. For Level 1 Endovascular Procedures (outpatient APC 5191), its average charge of $22,753 was 32% above the state average of $17,272. For Level 3 Vascular Procedures (outpatient APC 5183), its average charge of $16,334 was 4% above the state average of $15,679.
Price-transparency record
CMS's enforcement list records these actions for a hospital named Ascension Macomb Oakland Hosp-Warren Campus in Warren, MI, under the federal hospital price-transparency rule (45 CFR part 180), which requires hospitals to post their standard charges online:
- Met Requirements — 2025-04-16 (CMS case 3854)
A warning notice or corrective-action request is not a finding of wrongdoing; "Met Requirements" and closure notices record that CMS's review ended. Matched to this hospital by exact name, city and state.
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.