Oxford Health Plans Addiction Treatment Coverage on Long Island
Oxford Health Plans is a UnitedHealthcare subsidiary specializing in employer-sponsored coverage for the New York, New Jersey, and Connecticut tri-state area. Oxford is one of the most popular commercial health plans for Long Island employers and provides comprehensive addiction treatment coverage.
Tri-State
Coverage Area
NY / NJ / CT focused
UHC
Backbone
Optum behavioral network
100%
MAT Coverage
Suboxone, Vivitrol, Sublocade
Popular
With Employers
Top LI commercial plan
What Oxford Health Covers for Addiction Treatment
Under the Mental Health Parity and Addiction Equity Act, Oxford covers substance use disorder treatment at parity with medical/surgical benefits:
Covered MAT Medications
Oxford covers all FDA-approved medications for opioid and alcohol use disorders through Optum's formulary:
Suboxone
Buprenorphine/Naloxone
Use: Opioid dependence
Form: Film / Tablet
Sublocade
Extended-release buprenorphine
Use: Opioid dependence
Form: Monthly injection
Vivitrol
Extended-release naltrexone
Use: Opioid & alcohol
Form: Monthly injection
Brixadi
Buprenorphine ER injection
Use: Opioid dependence
Form: Weekly/Monthly injection
Oxford Plans Accepted for Rehab
Oxford Freedom (PPO)
Most flexible plan — in-network and out-of-network benefits with no referrals needed. Lower cost-sharing at in-network OASAS facilities. Popular with Long Island employers.
Oxford Liberty (EPO)
In-network only plan with competitive premiums. No referrals needed. Covers all levels of addiction treatment within Oxford's network.
Oxford Metro (HMO)
In-network only with PCP coordination. Lowest premiums. Covers all levels of addiction treatment at in-network OASAS facilities.
Oxford Medicare Advantage
For adults 65+ or those with qualifying disabilities. Covers medically necessary addiction treatment including detox, rehab, and MAT.
Prior Authorization Requirements
| Level of Care | In-Network | Out-of-Network (Freedom) |
|---|---|---|
| Outpatient Counseling | No prior auth required | No prior auth required |
| Intensive Outpatient (IOP) | No prior auth required | Prior auth required |
| Partial Hospitalization (PHP) | Prior auth required | Prior auth required |
| Inpatient Detox | Prior auth required | Prior auth required |
| Residential Treatment | Prior auth required | Prior auth required |
| MAT (Suboxone/Vivitrol) | Varies by medication | Prior auth required |
How to Verify Your Oxford Health Benefits
Locate your Oxford member ID
Find your member ID number on your Oxford Health Plans insurance card. Note whether you have a Freedom, Liberty, or Metro plan.
Call Oxford Member Services
Call 1-800-444-6222 to verify your behavioral health and substance abuse benefits. Ask about covered services, copays, and in-network providers on Long Island.
Or call us for free verification
Our team can verify your Oxford benefits for free and connect you with an appropriate in-network treatment center on Long Island.
Begin treatment
Once benefits are verified, begin treatment — often the same day for outpatient. The facility handles prior authorization through Optum for higher levels of care.
Where Oxford Health Is Accepted on Long Island
Nassau County
- • Detox & residential programs
- • Outpatient clinics (IOP/PHP)
- • MAT providers & clinics
- • Optum behavioral network
Suffolk County
- • Hospital-based detox units
- • Residential rehabilitation
- • Outpatient treatment programs
- • Sober living residences
Your Parity Rights Under Federal & NY Law
Under the MHPAEA and Timothy's Law, Oxford Health cannot impose more restrictive limitations on substance use disorder treatment than on medical/surgical benefits.
- Addiction treatment covered at parity with medical/surgical benefits
- Co-pays and deductibles must be comparable
- Prior auth cannot be more restrictive than for medical care
Frequently Asked Questions About Oxford Health Rehab Coverage
Related Insurance Guides
Verify Your Oxford Health Benefits — Free & Confidential
Our team can verify your Oxford Health Plans coverage and connect you with an appropriate in-network treatment center on Long Island.
Call 844-338-6969Available 24/7 — No obligation
Medical Disclaimer: This page is for informational purposes only and does not constitute medical advice. Coverage details may vary by specific Oxford plan. Always verify your individual benefits with Oxford Member Services (1-800-444-6222) before beginning treatment. Information is current as of March 2026.