Mountainside Chelsea
Mountainside Chelsea is an addiction treatment facility at 243 West 18th Street in New York, New York, offering partial hospitalization or residential treatment, outpatient treatment, and medication-assisted treatment, according to its SAMHSA FindTreatment.gov listing as of April 10, 2026. The same record also lists opioid treatment medications. Payment options listed in the record include Cash or self-payment and Private health insurance. The directory lists 860-824-1397 as the facility's phone number. All details on this page come from that federal record and should be confirmed directly with the facility.
243 West 18th Street, New York, NY, 10011
Contact & Location
Address: 243 West 18th Street, New York, NY, 10011
Phone: 860-824-1397
Website: https://Mountainside.com
Services & Programs
Treatment Types
- Opioid Treatment Medications
- Outpatient
- Partial Hospitalization / Residential
- Substance Use Medication-Assisted Treatment
Insurance & Payment
- Cash or self-payment
- Private health insurance
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Levels of care this record lists, across New York: Residential · Medication-Assisted Treatment · Outpatient · Partial Hospitalization (PHP)
Need Help Deciding?
Contact Mountainside Chelsea directly at 860-824-1397, or call the SAMHSA National Helpline for free, confidential referrals 24/7.
SAMHSA Helpline: 1-800-662-HELP