Quick answers
- Does Mary Greeley Medical Center have an emergency room?
- Yes. Medicare (CMS) data lists emergency services at Mary Greeley Medical Center. In a medical emergency, call 911.
- Where is Mary Greeley Medical Center?
- 1111 Duff Avenue, Ames, IA 50010, in Story County, Iowa.
- What is the phone number of Mary Greeley Medical Center?
- (515) 239-2011, as listed by Medicare (CMS).
- What is the Medicare star rating of Mary Greeley Medical Center?
- 4 out of 5 stars in the CMS overall hospital quality rating (CMS data updated 2026-07-22).
Specialties and care areas[4][5][8][9]
- Allergy and Immunology
- Cardiac Care
- Pregnancy Care & Birth
- Cancer Care
- Surgery
- Orthopedics & Sports Medicine
- Rehabilitation & Therapy
- Home Health
Treatments[5][8][9]
- Physical therapy
- Speech and language therapy
- Neurological rehabilitation
- Aquatic physical therapy
- Hospice care
Programs and centers[4][5][8][9]
- Acute (inpatient) Rehabilitation
- Birthways (obstetrics unit)
- Home Health Services
- Hospice Home Care
- Ambulance / Mobile Intensive Care Services
- First Nurse phone line
Visiting and practical information
Recognition[4]
- Magnet Recognition (ANCC), designated 2019
- Malcolm Baldrige National Quality Award (2019)
Doctors and clinicians (303)
303 doctors and other clinicians list Mary Greeley Medical Center as a hospital where they work, in Medicare's official clinician data (updated 2026-10-02). It is not a complete staff list.
Main specialties
- Nurse Practitioner54
- Family Practice51
- Physician Assistant23
- Internal Medicine18
- Anesthesiology17
- Hospitalist16
- Orthopedic Surgery13
- Diagnostic Radiology11
- General Surgery10
- Obstetrics/Gynecology9
- Emergency Medicine9
- Cardiovascular Disease (Cardiology)6
Doctors with a page on this site (303)
- Aaron M. Heiar, DOFamily Practice
- Abigail J. Gabriel, MDInternal Medicine
- Aksana V. TharpNurse Practitioner
- Alejandra Londono Jimenez, MDRheumatology
- Alex Davis, DOEmergency Medicine
- Alexander W. Wickenkamp, MDGeneral Surgery
- Alexandria M. Carroll, MDObstetrics/Gynecology
- Alice C. May, CNMCertified Nurse Midwife (CNM)
- Alicia L. MurphyNurse Practitioner
- Allison E. Testroet, DOFamily Practice
- Allison J. EnessPhysician Assistant
- Allison L. RothNurse Practitioner
- Alyson M. VosbergNurse Practitioner
- Amanda K. Van Wyk, PAPhysician Assistant
- Amanda Van WykNurse Practitioner
- Amy S. TerhaarNurse Practitioner
- Analissa M. KautzaNurse Practitioner
- Anand K. Shah, MDFamily Practice
- Andrea M. BartlingPhysician Assistant
- Andrew J. Mizerak, MDAnesthesiology
- Andrew T. Boyko, MDEmergency Medicine
- Angela R. Olerich, DOFamily Practice
- Ann M. Gessner, DOObstetrics/Gynecology
- Anna E. Statz, DOOsteopathic Manipulative Medicine
And 279 more: the button below opens the full list.
Names link to the doctor’s page on this site when there is one, otherwise to the official NPI Registry record (U.S. Department of Health and Human Services). Find a doctor · Source: CMS Facility Affiliation Data
Other emergency rooms nearby
Hospitals that list emergency services, by straight-line distance (not driving distance).
- Story County Hospital9.2 mi · Nevada, IA · Critical Access Hospital
- Boone County Hospital14 mi · Boone, IA · Critical Access Hospital
- VA Central Iowa Healthcare System28 mi · Des Moines, IA · Federal/VA Acute Care Hospital
- Dallas County Hospital28 mi · Perry, IA · Critical Access Hospital
- Broadlawns Medical Center29 mi · Des Moines, IA · Acute Care Hospital
Other hospitals nearby
- MercyOne Des Moines Medical Center30 mi · Des Moines, IA · Acute Care Hospital
Nursing homes, hospice, home health and dialysis nearby
Medicare-certified providers within 25 miles, by straight-line distance. Hospice and home health care is given at home: their address is the office.
Nursing homes
- Accura Healthcare of Ames, LLC1.7 mi · Ames, IA · 3 of 5 stars
- Green Hills Health Care Center2.7 mi · Ames, IA · 5 of 5 stars
- Northridge Village2.9 mi · Ames, IA · 5 of 5 stars
All nursing homes in the state →
Hospice providers
- Heartland Hospice (West Des Moines)1.2 mi · Ames, IA
- Mary Greeley Hospice Services4.4 mi · Ames, IA · 4 of 5 stars
- Compassus Central Iowa21 mi · Ankeny, IA
All hospice providers in the state →
Home health agencies
- Mary Greeley Home Health Services1.2 mi · Ames, IA
- Home Care Services of Boone Co13 mi · Boone, IA
- Freedom Home Health Care21 mi · Ankeny, IA
All home health agencies in the state →
Dialysis facilities
- DaVita Ames Mary Greeley Dialysis1.2 mi · Ames, IA · 5 of 5 stars
- DaVita Ankeny Dialysis21 mi · Ankeny, IA · 4 of 5 stars
Outpatient surgery centers nearby
Medicare-certified ambulatory surgery centers within 25 miles, by straight-line distance.
- Ames Surgery Center LLC1.2 mi · Ames, IA
- Ankeny Medical Park Surgery Center21 mi · Ankeny, IA
Community care nearby
Health centers, clinics, urgent care and pharmacies closest to this hospital, by straight-line distance, from official HRSA, Medicare and NPI Registry data. In a medical emergency, call 911.
Community health centers
- Primary Health Care - Story County2.9 mi · Ames, IA · Community health center
Clinics and urgent care
- Story Medical Clinic - Nevada8.5 mi · Nevada, IA · Rural health clinic
- Madrid Family Practice Clinic13 mi · Madrid, IA · Rural health clinic
- Story Medical Clinic - Maxwell17 mi · Maxwell, IA · Rural health clinic
Pharmacies
- GRX Holdings LLC1.2 mi · Ames, IA · Community/retail pharmacy
- GRX Holdings LLC1.2 mi · Ames, IA · Community/retail pharmacy
- Hy-Vee Inc1.2 mi · Ames, IA · Community/retail pharmacy
Assisted living nearby
Licensed homes from the official state licence list, by straight-line distance.
- Bickford Cottage Ames1.2 mi · Ames, IA
- Northridge Village1.2 mi · Ames, IA
- Lindens4.4 mi · Ames, IA
- Rose of Ames4.4 mi · Ames, IA
About the Medicare star rating
CMS (the federal Medicare agency) gives many hospitals an overall rating from 1 to 5 stars, based on measures of mortality, safety, readmissions, patient experience and timely care. It is one piece of information: ask your doctor what matters for your care. See the full Medicare profile →
Medicare quality data
What Mary Greeley Medical Center reported to Medicare (CMS), the federal agency that publishes these results for hospitals nationwide. These are averages for many patients, not a prediction for any one person: ask your doctor what matters for your care. In a medical emergency, call 911.
What patients said (patient survey)
What this means: Patients who stayed overnight answered a national survey (HCAHPS) about their stay. More stars mean patients reported a better experience than at other hospitals. The percentages show how often patients gave the best answer, next to the national average.
| Summary star rating (all survey topics) | 4 of 5 stars |
|---|---|
| Overall rating of the hospital | 4 of 5 stars |
| Would recommend the hospital | 5 of 5 stars |
| Nurses communicated well | 4 of 5 stars |
| Doctors communicated well | 4 of 5 stars |
| Staff explained medicines | 4 of 5 stars |
| Information about recovery at home | 4 of 5 stars |
| Room and bathroom kept clean | 4 of 5 stars |
| Quiet at night | 5 of 5 stars |
| Rated the hospital 9 or 10 out of 10 | 79%National average: 72% |
| Would definitely recommend the hospital | 82%National average: 71% |
| Nurses “always” communicated well | 82%National average: 80% |
| Doctors “always” communicated well | 80%National average: 80% |
| Staff “always” explained medicines before giving them | 64%National average: 62% |
| Were given information about recovery at home | 88%National average: 86% |
| Room and bathroom “always” clean | 75%National average: 74% |
| Area around the room “always” quiet at night | 72%National average: 60% |
| Completed surveys | 1,555Response rate: 36% |
Source: Patient survey (HCAHPS) - Hospital — CMS, released July 22, 2026; patients discharged October 2024 to September 2025.
Infections caught in the hospital
What this means: CMS compares the number of infections patients caught in this hospital with the number expected for a hospital like it. The number shown is that ratio: below 1 means fewer infections than expected, above 1 means more. “Better” or “worse” is shown only when the difference is clear in the data.
| Central line bloodstream infections (CLABSI) | 0No different from the national benchmark |
|---|---|
| Catheter-associated urinary tract infections (CAUTI) | 1.258No different from the national benchmark |
| Surgical site infections after colon surgery | 0.889No different from the national benchmark |
| Surgical site infections after abdominal hysterectomy | Not reported to Medicare |
| MRSA bloodstream infections | 0.863No different from the national benchmark |
| Clostridioides difficile (C. diff) intestinal infections | 0.469Better than the national benchmark |
Source: Healthcare Associated Infections - Hospital — CMS, released July 22, 2026; data from October 2024 to September 2025.
Complications and deaths
What this means: Death rates are the share of patients who died within 30 days of going into the hospital for that condition, adjusted for how sick they were. PSI-90 combines several serious complications (a lower number is better). “No different from the national rate” is the most common result and means the hospital is in line with hospitals nationwide.
| Deaths within 30 days: heart attack patients | 11.9% |
|---|---|
| Deaths within 30 days: heart failure patients | 12.6% |
| Deaths within 30 days: pneumonia patients | 16% |
| Deaths within 30 days: COPD patients | 7.2% |
| Deaths within 30 days: stroke patients | 11.5% |
| Deaths within 30 days: coronary bypass surgery (CABG) | Not reported to Medicare |
| Serious complications (patient safety indicator PSI-90) | 0.76No different from the national rate |
| Complications after hip or knee replacement | 4.9% |
Source: Complications and Deaths - Hospital — CMS, released September 10, 2026; data from July 2022 to June 2025.
Return visits to the hospital (readmissions)
What this means: The share of patients who had to be admitted to a hospital again within 30 days after going home, adjusted for how sick they were. A lower percentage is better.
| Returned to any hospital within 30 days (all patients) | Not reported to Medicare |
|---|---|
| Readmitted within 30 days: heart attack | 14.7% |
| Readmitted within 30 days: heart failure | 21.6% |
| Readmitted within 30 days: pneumonia | 18.1% |
| Readmitted within 30 days: COPD | 19% |
| Readmitted within 30 days: coronary bypass surgery | Not reported to Medicare |
| Readmitted within 30 days: hip or knee replacement | 5.3% |
Source: Unplanned Hospital Visits - Hospital — CMS, released September 10, 2026; data from July 2023 to June 2025.
Emergency room times and sepsis care
What this means: ER time is the middle (median) time from arriving at the emergency room to leaving it; busier ERs usually have longer times, so the ER volume is shown too. Leaving before being seen: a lower percentage is better. Sepsis is a life-threatening reaction to an infection; a higher percentage means more patients got every recommended early step.
| Emergency room volume (patients per year) | Medium (20,000–39,999) |
|---|---|
| Average (median) time patients spent in the emergency room before leaving (OP-18b) | 146 minutesNational average: 162 minutes |
| Patients who left the emergency room before being seen (OP-22) | 2%National average: 2% |
| Sepsis patients who got all the recommended early care (SEP-1) | 68%National average: 65% |
Source: Timely and Effective Care - Hospital — CMS, released July 22, 2026; data from January 2024 to December 2024.
ER wait times and Medicare ratings nearby
How this hospital compares with others in the area, ranked only by official Medicare (CMS) numbers.
Prices
We have not been able to read a price file for Mary Greeley Medical Center yet. Every US hospital must publish its standard charges online (federal price transparency rule): look for “price transparency” or “standard charges” on the hospital’s website, or call the hospital and ask for an estimate. In a medical emergency, call 911.
Hospital information
| Hospital type | Acute Care Hospital |
|---|---|
| Address | 1111 Duff Avenue, Ames, IA 50010 |
| County | Story County |
| State | Iowa |
| Phone | (515) 239‑2011 |
| Emergency services | Yes |
| Ownership | Government - Local |
| Medicare overall rating | 4 of 5 stars |
| Birthing-friendly designation | Yes (meets CMS criteria) |
| CMS Certification Number | 160030 |
| Name in Medicare records | MARY GREELEY MEDICAL CENTER |
| Profile level | Medicare data + hospital website |
| Official website | mgmc.org |
| Corrections | Report an error or suggest an update → |
Sources
- Hospital General Information — Centers for Medicare & Medicaid Services (CMS), data updated 2026-07-22, retrieved 2026-10-29
- Medicare Care Compare — official Medicare profile of this hospital
- U.S. Census Bureau Geocoder — map position used for distances
From the hospital’s website
Numbers match the citations above. Checked 2026-11-02.
- Mary Greeley Medical Center — mgmc.org
- Medical Care | Ames, IA - Mary Greeley Medical Center — mgmc.org
- Patients & Visitors | Ames, IA - Mary Greeley Medical Center — mgmc.org
- About — mgmc.org
- Rehabilitation Services — mgmc.org
- Home Health Care — mgmc.org