CMS certification 450184
Memorial Hermann Hospital System
1635 North Loop West, Houston, TX 77008
Memorial Hermann Hospital System has a CMS overall rating of 3 out of 5 stars. 71% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. Of the 25 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 7 and worse on 5. Emergency patients spend a median of 4 h 3 min in its emergency department before leaving (US median 2 h 42 min).
Every figure on this page is published by CMS; we arrange and explain it, and score nothing ourselves.
What patients said
Answers from patients who stayed here, collected by CMS in the national HCAHPS survey: 2,132 completed surveys, 14% response rate, Oct 2024 – Sep 2025.
Emergency department
How long emergency patients spent here and how some time-critical care went, from CMS's timely and effective care measures, Oct 2024 – Sep 2025. CMS classes this emergency department's patient volume as very high; busier departments tend to have longer times, so the national median for departments of the same volume is shown too. These are medians over a year of visits, not a live wait time.
| Measure | This hospital | TX | US |
|---|---|---|---|
| Median time in the emergency department before leaving Lower is better · 401 visits sampled · US median for EDs of the same volume: 3 h 21 min | 4 h 3 min | 2 h 25 min | 2 h 42 min |
| Median time for psychiatric and mental health patients Lower is better · 15 visits sampled | 7 h 18 min | 3 h 53 min | 4 h 17 min |
| Left before being seen Lower is better · 296,823 patients | 1% | 1% | 2% |
| Stroke symptoms: brain scan read within 45 minutes Higher is better · 88 patients | 45% | 67% | 69% |
| Severe sepsis and septic shock: all recommended care given Higher is better · 699 patients | 43% | 68% | 65% |
How Memorial Hermann Hospital System compares with nearby hospitals
The closest hospitals of the same kind that CMS rates or surveys - the same city first, then the same county and ZIP area. Every figure is CMS's: the overall star rating, the share of patients who would definitely recommend the hospital, the median time emergency patients spent before leaving, and how many death, complication, infection and readmission measures CMS found better or worse than the national rate.
| Hospital | CMS stars | Would recommend | ER median time | Vs the nation |
|---|---|---|---|---|
| Memorial Hermann Hospital SystemThis hospital | 3/5 | 71% | 4 h 3 min | 7 better 5 worse |
| HCA Houston Healthcare Medical CenterSame city | 4/5 | 63% | 1 h 15 min | 1 better 1 worse |
| St Joseph Medical CenterSame city | 3/5 | 55% | 3 h | 1 better |
| Ad Hospital East, LLCSame city | Not rated | 64% | — | No different |
| Memorial Hermann Memorial City HospitalSame city | 4/5 | 71% | 4 h 19 min | 6 better |
| Baylor St Lukes Medical CenterSame city | 4/5 | 66% | 2 h 45 min | 5 better 1 worse |
Hospitals differ in size and in how sick their patients are. CMS adjusts its outcome measures for that, but a star or a percentage is a starting point for questions, not a verdict. All hospitals in Houston.
Deaths
How many patients died within 30 days of admission, adjusted by CMS for how sick they were. Lower is better. Data from Jul 2022 – Jun 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| All patients, hospital-wide 14,781 cases | Too few cases | 3% | 3.9% |
| Heart attack 392 cases | Too few cases | 12.4% | 11.9% |
| Heart failure 1,296 cases | Too few cases | 9.9% | 11.1% |
| Pneumonia 1,475 cases | Too few cases | 14.2% | 15.2% |
| Stroke 1,350 cases | Too few cases | 11.5% | 11.9% |
| COPD 319 cases | Too few cases | 9.4% | 8.6% |
| Heart bypass surgery (CABG) 221 cases | Too few cases | 1.7% | 2.4% |
Complications
How often patients had serious complications, most of them after surgery, adjusted for how sick they were. Lower is better. Data from Jul 2022 – Jun 2024.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Serious complications, combined measure | No different | 1.02 likely 0.82 – 1.23 | 1 |
| After hip or knee replacement 58 cases | Too few cases | 4.6% | 4.1% |
| Deaths after a serious but treatable surgical complication 432 cases | Better | 137.67 per 1,000 likely 108.56 per 1,000 – 166.78 per 1,000 | 173.3 per 1,000 |
| Pressure ulcers (bed sores) 17,391 cases | Better | 0.26 per 1,000 likely 0 per 1,000 – 0.58 per 1,000 | 0.63 per 1,000 |
| Collapsed lung caused by a procedure 19,726 cases | No different | 0.2 per 1,000 likely 0.05 per 1,000 – 0.35 per 1,000 | 0.21 per 1,000 |
| Broken bones from falls in the hospital 20,235 cases | No different | 0.19 per 1,000 likely 0.03 per 1,000 – 0.35 per 1,000 | 0.27 per 1,000 |
| Bleeding or hematoma after surgery 4,969 cases | Better | 1.26 per 1,000 likely 0.2 per 1,000 – 2.33 per 1,000 | 2.34 per 1,000 |
| Kidney injury needing dialysis after surgery 1,329 cases | No different | 1.1 per 1,000 likely 0 per 1,000 – 2.51 per 1,000 | 1.67 per 1,000 |
| Breathing failure after surgery 1,369 cases | No different | 9.88 per 1,000 likely 5.56 per 1,000 – 14.2 per 1,000 | 9.42 per 1,000 |
| Blood clots in the lungs or legs after surgery 5,295 cases | No different | 4.34 per 1,000 likely 2.98 per 1,000 – 5.69 per 1,000 | 3.52 per 1,000 |
| Sepsis after surgery 1,305 cases | Worse | 9.19 per 1,000 likely 6.27 per 1,000 – 12.12 per 1,000 | 5.27 per 1,000 |
| Surgical wound splitting open 1,174 cases | No different | 2.08 per 1,000 likely 0.76 per 1,000 – 3.4 per 1,000 | 1.77 per 1,000 |
| Accidental cut or tear during abdominal surgery 4,154 cases | No different | 0.99 per 1,000 likely 0.26 per 1,000 – 1.72 per 1,000 | 1.06 per 1,000 |
Infections caught in the hospital
Standardized infection ratio: 1.0 means as many infections as CMS predicted for a hospital like this one. Lower is better. Data from Oct 2024 – Sep 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Bloodstream infections from central lines (CLABSI) | Better | 0.51 likely 0.32 – 0.76 | 1 |
| Urinary tract infections from catheters (CAUTI) | Better | 0.2 likely 0.1 – 0.35 | 1 |
| Surgical site infections after colon surgery | No different | 0.6 likely 0.33 – 1 | 1 |
| Surgical site infections after abdominal hysterectomy | No different | 1.81 likely 0.84 – 3.44 | 1 |
| MRSA bloodstream infections | Better | 0.45 likely 0.26 – 0.74 | 1 |
| C. diff intestinal infections | Better | 0.17 likely 0.11 – 0.24 | 1 |
Readmissions and return visits
How often patients had to come back to a hospital after going home. Lower is better. Data from Jul 2023 – Jun 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Readmitted after a heart attack 917 cases | Too few cases | 15.5% | 14.4% |
| Readmitted after heart failure 3,791 cases | Too few cases | 21.4% | 21.3% |
| Readmitted after pneumonia 3,278 cases | Too few cases | 18% | 17.3% |
| Readmitted after COPD 960 cases | Too few cases | 20.7% | 20% |
| Readmitted after heart bypass surgery 423 cases | Too few cases | 11.5% | 11% |
| Readmitted after hip or knee replacement 51 cases | Too few cases | 5.5% | 5.8% |
| Days back in hospital after a heart attack 394 cases | Too few cases | 39.2 days per 100 | — |
| Days back in hospital after heart failure 1,546 cases | Too few cases | 10.6 days per 100 | — |
| Days back in hospital after pneumonia 1,521 cases | Too few cases | 15.5 days per 100 | — |
| Unplanned visits after an outpatient colonoscopy 2,275 cases | No different | 12.7 per 1,000 likely 10.2 per 1,000 – 15.7 per 1,000 | 13 per 1,000 |
| Unplanned visits after outpatient surgery 1,658 cases | No different | 1 likely 0.8 – 1.2 | — |
3 more measures had too few cases here to report.
Clinicians registered at this address
168 clinicians give this hospital's street address as their practice location in NPPES, the federal provider registry. The same address can take in offices and clinics in the building, and a listing does not prove admitting privileges or current employment.
| Specialty | Clinicians |
|---|---|
| Hospitalist | 32 |
| Nurse Anesthetist, Certified Registered | 31 |
| Emergency Medicine | 17 |
| Anesthesiology | 11 |
| Acute Care | 10 |
| Physician Assistant | 9 |
| Nurse Practitioner | 8 |
| Physical Therapist | 6 |
| Family | 4 |
| Medical | 4 |
| Pain Medicine | 4 |
| Pharmacist | 3 |
First 12 alphabetically
Money from drug and device companies
Drug and device makers have to report what they pay teaching hospitals to CMS's Open Payments program. At many teaching hospitals most of it is research funding, or royalties for inventions the hospital licensed to a company. A payment on its own does not show a conflict of interest.
- 2019 $167,482
- 2020 $83,581
- 2021 $44,416
- 2022 $147,420
- 2023 $1M
- 2024 $234,715
- 2025 $20,223
What the 2025 general payments were for
| Type of payment | Amount | Payments |
|---|---|---|
| Space rental and facility fees | $11,328 | 2 |
| Medical devices and supplies on long-term loan | $8,860 | 4 |
| Debt forgiveness | $35 | 1 |
Largest paying companies, 2025
| Company | Amount | Payments |
|---|---|---|
| Davol Inc. | $10,328 | 1 |
| Bard Peripheral Vascular, Inc. | $8,100 | 1 |
| Fresenius Kabi USA, LLC | $1,000 | 1 |
| Medtronic, Inc. | $562 | 1 |
| Cochlear Americas | $194 | 1 |
| Qiagen, LLC | $35 | 1 |
| Fisher & Paykel Healthcare Inc | $4 | 1 |
Amounts are as the paying companies reported them to CMS; Open Payments data retrieved 13 Sep 2026. Full record on CMS Open Payments.
How to read this page
- Everything here is published by CMS on Care Compare. We arrange it and explain it; the star ratings and the better / worse verdicts are CMS's, not ours.
- “No different” is the most common result on most measures at most hospitals. CMS only calls a result better or worse when the difference from the national rate is statistically clear.
- Death, complication and readmission rates are adjusted by CMS for how sick patients were, so hospitals that treat sicker patients can be compared fairly.
- Infection results are ratios: 1.0 means as many infections as CMS predicted for a hospital like this one, below 1.0 is fewer.
- These are hospital-wide results. They do not rate an individual doctor, nurse or department, and they are not medical advice.
CMS Care Compare data retrieved 4 Oct 2026, refreshed weekly. Where this data comes from and how we handle it · Report an error
Common questions about Memorial Hermann Hospital System
Is Memorial Hermann Hospital System a good hospital?
Memorial Hermann Hospital System has a CMS overall rating of 3 out of 5 stars. Of the 25 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 7 and worse on 5. These are hospital-wide results published by CMS; they do not rate individual doctors or departments.
Would patients recommend Memorial Hermann Hospital System?
71% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. The figure comes from 2,132 completed HCAHPS surveys.
How long is the wait in the Memorial Hermann Hospital System emergency room?
Emergency patients spend a median of 4 h 3 min in its emergency department before leaving (US median 2 h 42 min). Among US emergency departments with very high patient volume, like this one, the median is 3 h 21 min. 1% of emergency patients left before being seen (US 2%). These are medians over a year of visits, not a live wait time.
Does Memorial Hermann Hospital System receive money from drug and device companies?
Drug and device makers reported $20,223 in payments to Memorial Hermann Hospital System for 2025, under the federal Open Payments program. A payment on its own does not show a conflict of interest.