Source: CMS Care Compare, July 2026 releaseER figures are medians, not live waitsAbout the data
Visiting Mariners Hospital
Tavernier, FL 33070
County: Monroe Directions Apple Maps Call (305) 434-3000
- Photo ID and your insurance, Medicare or Medicaid card
- A list of your medicines, doses and allergies
- Your doctor's name and phone number
- A phone charger
Nearby hospitals
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- 41mi Healthsouth Rehab Hospital Miami, FL Call Healthsouth Rehab Hospital Directions to Healthsouth Rehab Hospital (Google Maps) Details for Healthsouth Rehab Hospital
- 41mi Fishermen's Community Hospital Marathon, FL · Emergency room · median ER visit 1 hr 58 min Call Fishermen's Community Hospital Directions to Fishermen's Community Hospital (Google Maps) Details for Fishermen's Community Hospital
Quick answers about Mariners Hospital
How long is the ER wait at Mariners Hospital?
CMS doesn't publish live wait times. Over the 12 months CMS reported, patients treated and sent home spent a median of 1 hr 58 min in the Mariners Hospital emergency room (the average across Florida hospitals is 2 hr 35 min). 0% of ER patients left before being seen. For tonight's wait, call (305) 434-3000. In an emergency, call 911.
What is the phone number for Mariners Hospital?
The main phone number for Mariners Hospital is (305) 434-3000, from Medicare's hospital records.
Call (305) 434-3000What is the address of Mariners Hospital?
Mariners Hospital is at 91500 Overseas Highway, Tavernier, FL 33070.
Directions (opens Google Maps)Does Mariners Hospital have an emergency room?
Yes. Mariners Hospital has an emergency department, according to Medicare data.
What is Mariners Hospital's Medicare star rating?
Mariners Hospital has an overall rating of 5 out of 5 stars from the Centers for Medicare & Medicaid Services (CMS). Star ratings come from CMS quality and safety measures, not patient reviews.
Quality and performance
Centers for Medicare & Medicaid Services · data as of July 2026
Patients treated and sent home from the emergency department at Mariners Hospital spend a median of 1 hour 58 minutes there. That is 37 minutes shorter than the average across Florida hospitals (2 hours 35 minutes).
Source: CMS Hospital General Information and Timely & Effective Care. Wait times are a median over a past 12-month reporting period, not live data. Not affiliated with CMS or with Mariners Hospital. For a medical emergency, call 911.
Compare ER waits across Florida · How Florida hospitals rank on star ratings · Other Critical Access hospitals in Florida · How we source this data · Something wrong on this page? Tell us
What patients say
CMS patient survey (HCAHPS) · 68 completed surveys · patients discharged Oct 2024 – Sep 2025
88% would definitely recommend it (U.S. average 71%). 91% rated it 9 or 10 out of 10.
The patient survey (HCAHPS) asks a random sample of adult patients about their recent hospital stay. CMS adjusts the results for the mix of patients and how the survey was done, so hospitals can be compared fairly. CMS gives a star rating only to hospitals with at least 100 completed surveys, so this hospital has answer percentages but no stars. These results come from fewer than 100 completed surveys, so CMS advises using them with caution. About the data.
Infections, complications and deaths
Centers for Medicare & Medicaid Services · compared with hospitals nationwide
Death rates within 30 days
| Patients treated for | This hospital | U.S. |
|---|---|---|
| Pneumonia patients | 11.4% | 15.2% |
| COPD patients | 7.2% | 8.6% |
| Hospital-wide, all conditions | 3.6% | 3.9% |
Risk-adjusted rates. CMS has not published a statistical better/worse comparison for these death rates in the current release, so small differences from the U.S. rate may be chance.
"Better" or "worse" means CMS found the difference from the national benchmark statistically significant; most hospitals are "no different". Infection results compare the infections a hospital reported with the number predicted for a hospital of its size and type (a ratio below 1 means fewer than predicted). Death and complication rates are risk-adjusted for how sick patients were. Each death rate counts deaths within 30 days of a hospital stay, pooled over one to three years of Medicare patients depending on the measure. About the data.
What insurance does Mariners Hospital accept?
Original Medicare: Medicare-certified, so it can bill Original Medicare (Medicare number 101313). Medicare Advantage plans have their own networks, which this section does not cover.
2027 Marketplace plans in Florida that list this hospital
| Insurer | Plans in network | Network tier |
|---|---|---|
| Florida Blue | 89 of 121 plans | Preferred |
| AvMed | 64 of 64 plans | Preferred |
| Oscar | 64 of 64 plans | Preferred |
2027 plan year, individual Marketplace (ACA) plans only.Health insurance in Florida
Plans that include this hospital: Florida Blue BlueOptions Bronze 24J, Florida Blue BlueOptions Bronze 24J01-18S, Florida Blue BlueOptions Gold 24J, Florida Blue BlueOptions Gold 24J01-20S, Florida Blue BlueOptions Platinum 24J, Florida Blue BlueOptions Platinum 24J01-21S Compare plans
What insurance does Mariners Hospital accept?
In the 2027 HealthCare.gov Marketplace plan data (insurer network files loaded November 4, 2026), Mariners Hospital is in network for 3 Marketplace insurers in Florida: Florida Blue (89 of 121 plans), AvMed (64 of 64 plans) and Oscar (64 of 64 plans). This covers Marketplace (ACA) plans only, not Medicare Advantage, Medicaid or employer plans. Networks differ from plan to plan and can change, so confirm with the insurer before you get care.
Does Mariners Hospital take Medicare?
Mariners Hospital is a Medicare-certified hospital (CMS Certification Number 101313), according to CMS hospital data. Medicare Advantage plans have their own networks, which this page does not cover; check with your plan before you get care.
Does Mariners Hospital accept Florida Blue?
Mariners Hospital is in network for 89 of 121 plans that Florida Blue sells on the Florida Marketplace in 2027, according to Florida Blue's network file loaded November 4, 2026. Not every Florida Blue plan includes it. Networks differ from plan to plan and can change, so confirm with the insurer before you get care.
Does Mariners Hospital accept AvMed?
Mariners Hospital is in network for 64 of 64 plans that AvMed sells on the Florida Marketplace in 2027, according to AvMed's network file loaded November 4, 2026. Networks differ from plan to plan and can change, so confirm with the insurer before you get care.
Does Mariners Hospital accept Oscar?
Mariners Hospital is in network for 64 of 64 plans that Oscar sells on the Florida Marketplace in 2027, according to Oscar's network file loaded November 4, 2026. Networks differ from plan to plan and can change, so confirm with the insurer before you get care.
Source: the insurers' 2027 machine-readable provider files listed in the CMS Marketplace public use files, loaded November 4, 2026, matched to hospitals by NPI from CMS Hospital Enrollments. How we match networks to hospitals Networks change; confirm with your insurer before you go.
Readmissions and return visits
Centers for Medicare & Medicaid Services · Medicare patients · Jul 2023 – Jun 2025
On the 4 readmission and return-visit measures CMS could compare, Mariners Hospital was no different from the national rate or its expected level.
Back in the hospital within 30 days
| After a stay for | This hospital | U.S. | CMS comparison |
|---|---|---|---|
| Pneumonia | 17.1% | 17.3% | Not compared |
| COPD (chronic lung disease) | 20.2% | 20% | Not compared |
Return trips after a stay or procedure
Readmission rates count Medicare patients who were admitted to any acute-care hospital within 30 days of leaving this one, adjusted for how sick they were. "Better" or "worse" means CMS found the difference from the national rate statistically significant; most hospitals are "no different". Return-day and outpatient-surgery measures compare the hospital with what CMS expected for its own patients. The Readmissions Reduction Program ratios are shown as CMS publishes them; whether a hospital's payments are reduced depends on how its ratios compare with similar hospitals, so a ratio above 1.00 alone doesn't mean a penalty. About the data.
Timely and effective care
Centers for Medicare & Medicaid Services · all patients unless noted · Oct 2024 – Sep 2025
Mariners Hospital's emergency department is classed by CMS as low volume.
| Measure | This hospital | U.S. |
|---|---|---|
| Stroke: brain scan read within 45 minutes of ER arrivalPatients arriving with stroke symptoms whose head CT or MRI was interpreted within 45 minutes. Higher is better. 15 patients. | 87% | 69% |
| Typical time in the ER before going homeMedian minutes from arrival to leaving, for ER patients sent home (not counting mental health patients or transfers). Lower is better. 339 patients. | 118 min | 162 min |
| Typical ER time for mental health patients sent homeMedian minutes from arrival to leaving. Lower is better. 13 patients. | 224 min | 257 min |
| Typical ER time for patients transferred to another facilityMedian minutes from arrival to leaving. Lower is better. 43 patients. | 249 min | 287 min |
| Patients who left the ER before being seenLower is better. 11,139 patients. | 0% | 2% |
| Health care workers vaccinated against fluHigher is better. 403 patients. | 85% | 78% |
| Discharged on two opioids, or an opioid and a benzodiazepinePatients sent home with prescriptions that raise the risk of overdose when combined. Lower is better. 134 patients. | 13% | 15% |
| Colonoscopy: right follow-up interval for average-risk patientsHigher is better. 115 patients. | 100% | 93% |
CMS publishes these process-of-care measures without a better/worse verdict, so the U.S. figure is shown for context; small differences, or results based on few patients, may not mean much. About the data.
Care after a stay at Mariners Hospital
Medicare-certified providers near this hospital, with their CMS ratings. A hospital discharge planner can make the referral.
Skilled nursing facilities nearby
- 2.5mi Oasis at the Keys Nursing and Rehab Tavernier, FL · 120 beds Medicare overall 2 of 5 stars · Short-stay quality 1 of 5
Skilled nursing ratings and inspections at Nursing Homes In Each State
Source: CMS Care Compare. Distances are approximate.
Doctors at Mariners Hospital
225 Medicare-enrolled doctors and other clinicians list this hospital as an affiliation, across 27 specialties.
Find doctors in Tavernier
Medicare-enrolled specialists with a practice in Tavernier, with addresses, phone numbers and the hospitals they work with.
Size and finances
Medicare cost report · fiscal year ending Sep 2024
As reported by the hospital to CMS; not audited. Operating margin is income from patient care divided by net patient revenue and leaves out investment income and donations. Compare Florida hospital finances.
Who owns Mariners Hospital
Medicare enrollment and ownership records (PECOS)
Medicare lists the hospital's legal name as Mariners Hospital Inc, a non-profit organization, incorporated 1994.
404 doctors and other clinicians list Mariners Hospital as a hospital affiliation in Medicare's clinician directory.
Organizations with 5% or more ownership (directly or through other companies), partnership interests or operational control, as the hospital reported them to Medicare. Records can lag behind recent sales. Individuals are not listed. Who owns America's hospitals.
Non-profit finances
IRS Form 990 · tax year ending Sep 2023 · Mariners Hospital Inc (EIN 59-1987355)
As filed with the IRS by Mariners Hospital Inc. Matched by name and address, so check the filing to confirm it's the right organization. See the full Form 990 filings · Non-profit hospital finances.
The area around Mariners Hospital
HRSA shortage designations and BLS pay data
Mental health: Monroe is a federally designated health professional shortage area. Highest shortage score 14.
Nurse pay: registered nurses in Florida earn a median $84,190 a year. Healthcare salaries in Florida.
Shortage areas are designated by the Health Resources and Services Administration where there are too few primary care, mental health or dental providers for the population; scores run from 0 to 25 for primary and mental health care and 0 to 26 for dental care, higher meaning greater need. Florida shortage areas
Closest other hospitals
Healthcare pay in Florida
Registered nurses across Florida (all employers) earned a median of $84,190 a year (BLS, May 2025).Registered Nurse (RN) salary in FloridaNurse Practitioner salary in FloridaRespiratory Therapist salary in FloridaHealthcare salaries in Florida
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Cite this data
Writing about Mariners Hospital? You're welcome to quote these figures. They are free to use under CC BY 4.0: please credit HospitalsInEachState.com and link to this page.