If you have a medical emergency, please call 911.

Mariners Hospital in Tavernier, a vital part of the Florida Keys community, is a top-rated hospital in Florida for quality, safety of care and a low readmission rate. Located in the Upper Keys, Mariners operates the only hospital-based hyperbaric chamber in the Keys, which uses oxygen therapy to treat many illnesses and injuries, including diving-related decompression sickness, non-healing wounds, radiation tissue damage, and carbon monoxide poisoning.

Services & Specialties Available

  • 3D Mammography
  • Allergic Reaction - Minor
  • Asthma Attacks - Minor
  • Audio and Vision Test
  • Back, Neck & Spine Services
  • Bone Density (DEXA Scan)
  • Breast Biopsy
  • Breast Surgery
  • Cancer Diagnostic Testing
  • Cancer Patient Support Services
  • Cancer Preventive Screenings
  • Cancer Surgery
  • Cardiac Rehabilitation Services
  • Cardiology Services
  • Cardiovascular Diagnostic Testing Services
  • Cardiovascular Disease Prevention Services
  • Cholesterol Screening
  • Colon & Rectal Surgery
  • Common Cold
  • Comprehensive Blood Testing
  • Core Biopsy
  • Coronavirus Screening
  • Coughs
  • COVID-19 Antibody (IgG) Testing
  • CT Scan
  • Cuts & Scrapes
  • Diabetes
  • Diarrhea
  • Digital X-Ray
  • Dislocations
  • Drug Screening
  • Ear Nose & Throat
  • Earaches & Ear Infections
  • Electrocardiogram
  • Emergency Care
  • Endocrinology
  • Endoscopy Services
  • Fever
  • Flu & Flu Shots
  • Fluoroscopy Studies
  • Galactogram
  • Gastroenterology
  • General Surgery
  • Gynecology
  • Headaches
  • Heart Failure Services
  • Holter Monitor
  • Hospice & Palliative Care
  • Hyperbaric Medicine
  • Infectious Disease
  • Infusion Services
  • Internal Medicine
  • Laboratory Services
  • Laboratory Services
  • Minor Bug Bites & Allergic Reactions
  • Minor Rashes & Skin Disorders
  • Minor Wounds & Burns
  • MRI
  • Nausea
  • Neurology
  • Non - Invasive Vascular Ultrasound
  • Non-surgical Treatments
  • Nose Bleeds
  • Nuclear Medicine Studies
  • Nutrition
  • Oculoplastic Surgery
  • Orthognathic Surgery
  • Orthopedic Trauma
  • Pediatric Orthopedics
  • PET/CT Scan
  • Physical Medicine & Rehabilitation
  • Physical Therapy
  • Pink Eye
  • Pregnancy Testing
  • Primary Care Sports Medicine
  • Pulmonary
  • Radiation Therapies
  • Rapid Flu, Strep Throat and Mono Testing
  • Respiratory Infections
  • School & Sports Physicals
  • Simple Bone Fractures
  • Sinus Infections
  • Sleep Medicine
  • Sore Throat and Strep
  • Sports Medicine
  • Sprains & Strains
  • STD Testing
  • Stroke Services
  • Surgery
  • Tetanus Shots
  • Total Joint Replacement
  • Ultrasound
  • Urology
  • UTI Treatment
  • Vascular Disease Services
  • Vascular Services
  • Vomiting
  • Women's Health
  • Wound Care


91500 Overseas Highway
Tavernier, Florida 33070

Get Directions

About Mariners Hospital

Founded in 1962, Mariners Hospital is the only hospital serving the Upper Keys community. A 25-bed critical access hospital with medical-surgical and intensive care units, Mariners is proud to offer an outstanding, compassionate healthcare experience. It is home to one of the southernmost branches of Baptist Health's Miami Cancer Institute. Specialized nurses, trained by the Oncology Nursing Society in chemotherapy/biotherapy administration and pain management, offer care in a supportive and healing environment. The Diabetes Care Center and Sleep Diagnostic Center are also located on campus, as well as swing bed services, which are available to patients who are recovering from illness or injury and require specialized care. SPECT/CT scans were added to its imaging capabilities, which combines two different diagnostic scans into one for a more complete view of the body region being looked at. This is particularly useful for helping to identify tumors, brain injuries, and spinal fractures. Additionally, to help the Keys community achieve a new level of well-being, the 7,000-square-foot Wellness Center, located in the Tassell Medical Arts Building, offers a comprehensive line of gym equipment, exercise physiologists, group exercise classes and personal training.

Mariners Hospital Wellness Center

Explore our website to learn more about us and how we can help you achieve your health, fitness and wellness goals.

Mariners Hospital Awarded Laboratory Accreditation from The Joint Commission

Mariners Hospital Awarded Laboratory Accreditation from The Joint Commission

Mariners Hospital has earned The Joint Commission’s Gold Seal of Approval® for Laboratory Accreditation by demonstrating continuous compliance with its performance standards. The Gold Seal is a symbol of quality that reflects a healthcare organization’s commitment to providing safe and quality patient care.

Pathway to Excellence

Pathway to Excellence

Mariners Hospital achieved Pathway to Excellence designation from the American Nurses Credentialing Center in 2012. Mariners was the first hospital in the state of Florida to receive this designation, which serves as confirmation of our commitment to nursing excellence and an environment where collaboration between all hospital departments is highly valued and supported.

Nominate a Nurse

Nominate a Nurse

If you are a patient, family member, medical staff, support staff or volunteer, and would like to nominate a deserving nurse for The DAISY Award, click here.

COVID-19 Safety Precautions

COVID-19 Safety Precautions

At Baptist Health, we’ve always maintained high standards of safety and cleanliness. Now, in addition to our existing ongoing safety procedures, we’ve added new measures to keep us all well.

Visitor Information

For the health and safety of our patients, our visitor policy is as follows:

  • Visiting hours are from 7 a.m.-9 p.m.
  • After 9 p.m., all patients must enter and exit through the Emergency Department. The main lobby will be closed.
  • Elective procedures or diagnostic imaging patients may have one adult visitor on the day of procedure and/or testing. Exceptions may be made for special circumstances on a case-by-case basis.

Active screening for symptoms is taking place at entrance to the Emergency Room only.

The visitation policy is managed by the Patient Experience and Security teams. They may be reached at 1-833-Mybaptist.

Updated 9/30/22


Reserved Parking is available for the patients visiting our facility. There is also a valet service, and a public transportation drop off a block away from our facility.

Gift Shop

The Mariners Treasures Gift Shop is located in the main lobby of the hospital.

Hours of Operation

Monday - Friday: 10:00am - 4:00pm / Saturday: 11:00am - 2:00pm / Sunday: Closed. To place an order call the South Miami Hospital gift shop at 305-434-3645 .

Forms of payment accepted include Visa, Master Card, American Express and Discover Card.

Deliveries to a patient's rooms can be arranged throughout the day.

Insurances Accepted

To view the insurances accepted at this hospital, click here.


Mariners Hospital is committed to providing consumers of healthcare services with pricing information so they may better anticipate and understand their financial responsibilities and be able to make informed healthcare decisions.

Learn More


Pay a Bill

Paying your bill online is fast, easy, and secure.

Patient Portal

Access your medical records, test results, and track health conditions, allergies and medications through myBaptistHealth.

Patient Rights & Responsibilities

Baptist Health believes it’s important for you to take an active part in your healthcare.

Requesting Medical Records

All patient health care information at Baptist Health South Florida is confidential and protected by State and Federal laws and HIPAA regulations.

Recent Baptist Health News

*Estimated wait times are estimates only and cannot be guaranteed. While your medical condition will be evaluated by a qualified health care professional after your arrival, The estimated wait time indicated is the average estimated time it will take for you to be seen by a treating medical professional (physician, nurse, practitioner or physician assistant.

Depending on your medical condition and that of other patients at the center, the estimated wait time can change since patients are seen based on the severity of their condition, and the more critical patients are seen first. This estimate is provided for information purposes only and cannot be guaranteed.

During your visit at our facility, you may receive services from our facility as well as from other health care providers. You may receive a separate bill from these other health care providers, and they may or may not participate in the same health insurance plans as the facility. You should contact the health care providers who may render services to you for a list of the insurance plans with which they participate. You may also request from the facility and other health care providers a personalized estimate of charges. For a list of health care providers and medical practices who may provide services to you during your visit a Baptist Health facility, click here

If you have any questions regarding a separate statement/invoice you received from a health care provider, please contact the specific health care provider’s or group’s billing offices.

If however, you have any questions or concerns directly pertaining to your Baptist Health facility bill, please contact our Patient Financial Services Department at 786-596-6507.

Additional information regarding patient billing and collection procedures, our financial assistance policy and charitable care program is available on our site.

Good Faith Estimate

If you are uninsured, you have a right to receive a Good Faith Estimate of Expected Charges under the No Surprises Act. Learn more.

Your Rights and Protections Against Surprise Medical Bills

When you get emergency care or get treated by an out-of-network provider at an in-network hospital or ambulatory surgical center, you are protected from surprise billing or balance billing. Learn more.

Resources for Hospital Data

Florida's Agency for Health Care Administration (AHCA) makes available data on hospital prices and performance on their Internet website at FloridaHealthFinder.gov and Pricing.FloridaHealthFinder.gov. The data on hospital prices and performance are based on a compilation of charges for the average patient. A patient's bill may vary from the average shown, depending upon the severity of illness and individual care needs. The service bundle information is a non-personalized estimate of costs that may be incurred by the patient for anticipated services and that actual costs will be based on services actually provided to the patient.