Serving the Florida Keys since day one

Confidential Drug Testing & Addiction Treatment for the Keys Community

Guidance Clinic of the Middle Keys delivers comprehensive substance abuse treatment, workplace drug screening, and family medicine — all under one roof in Marathon, Florida.

Call Now Explore Services
Guidance Clinic of the Middle Keys exterior

Your Trusted Local Health Partner

Located on the Overseas Highway, we serve Marathon and the entire Florida Keys with compassionate, confidential care for substance abuse recovery and preventive health.

✓
HIPAA-compliant & confidential

SAMHSA Listed

Certified Treatment

Same-Day Testing

Walk-ins Welcome

Locally Owned

Marathon, FL

What We Offer

Comprehensive Care, One Location

From workplace drug screening to long-term addiction recovery, Guidance Clinic provides the full spectrum of services the Keys need.

Drug Testing & Screening

DOT-certified and non-DOT drug screening for employers, individuals, and families. Fast, accurate, and fully confidential results.

DOT Compliant Same-Day Results Chain of Custody

Addiction Treatment

Evidence-based substance abuse treatment programs tailored to each patient. From detox support to ongoing recovery, we walk alongside you.

Detox Support Outpatient Care Counseling

Family Medicine

Primary care for the whole family — routine checkups, chronic condition management, and preventive health services right here in Marathon.

Annual Exams Preventive Care Chronic Care

Employer Services

Comprehensive workplace drug testing programs for Florida Keys businesses. We handle everything from policy consultation to result reporting.

Policy Setup Group Rates Fast Reporting

Confidential Care

Your privacy matters. All services are delivered with strict HIPAA compliance in a private, judgment-free environment — critical in our close-knit community.

HIPAA Compliant Private Setting No Judgment

Walk-In Available

No appointment needed for drug screening. Walk in during business hours and get tested the same day — perfect for last-minute employer requirements.

No Appointment Quick Turnaround Convenient Hours
Florida Keys medical clinic setting

3380 Overseas Hwy

Marathon, FL 33050

About Us

A Pillar of Health in the Florida Keys

Guidance Clinic of the Middle Keys has been a cornerstone of healthcare in Marathon for years. Situated along the Overseas Highway, we are the go-to destination for residents and visitors who need reliable, compassionate medical services — especially in the critical areas of substance abuse treatment and drug testing.

The Florida Keys present unique health challenges. Isolated from mainland resources, islanders need a clinic that understands their circumstances — one that combines professional medical standards with the warmth and discretion a tight-knit community demands. That is exactly what we provide.

SAMHSA-certified facility
DOT-approved drug testing
Private, confidential setting
Experienced medical staff
Why Choose Us

The Keys' First Choice for Confidential Care

Being the only clinic of our kind in the Middle Keys means we carry a responsibility that goes beyond medicine — we are part of this community's fabric.

Community-Rooted

We understand the unique challenges of island life — from tourism-driven stress to limited access to specialized care.

Absolute Privacy

In a small community, discretion is everything. Every interaction is handled with the utmost confidentiality and respect.

Fast & Efficient

Same-day drug testing, quick result turnaround, and walk-in availability — because you can't always wait.

Compassionate Care

Addiction is a health issue, not a moral failing. We treat every patient with dignity, empathy, and zero judgment.

Ready to Take the Next Step?

Whether you need a drug test for work, are seeking help for yourself or a loved one, or need primary care — we are here. Call today to schedule your visit.

(305) 289-6150 Get Directions
Contact Us

Visit Us in Marathon

We are conveniently located on the Overseas Highway in the heart of Marathon. Walk-ins are welcome for drug testing, or call ahead to schedule an appointment for treatment or family medicine.

Address

3380 Overseas Hwy
Marathon, FL 33050-2343

Business Hours

Monday – Friday: 8:00 AM – 5:00 PM

Saturday – Sunday: Closed

Send Us a Message

Have a question about our services? Fill out the form and we will get back to you.

Is this your business? Claim your website
Your own domain includedLive in minutes, edit anytime
Claim my website