243 West 18th Street, New York, NY 10011
Mountainside Chelsea – Outpatient Clinic is a private substance use treatment provider in New York, New York, located at 243 West 18th Street. The Outpatient Clinic program is operated by Mountainside Chelsea.
Patients can access intensive outpatient (IOP), standard outpatient counseling, medication-assisted treatment (MAT), co-occurring (dual diagnosis) mental health treatment, and telehealth therapy. Clinicians use approaches such as anger management, brief intervention, cognitive behavioral therapy, motivational interviewing, and relapse prevention. For opioid use disorder, the program uses buprenorphine and naltrexone. It also prescribes medication for alcohol use disorder.
Mountainside Chelsea – Outpatient Clinic accepts private health insurance and cash or self-payment. A sliding fee scale based on income is available. Coverage depends on your specific plan, so verify benefits before admission.
The program accepts young adults, adults, and seniors. It offers specialized groups for clients with co-occurring mental and substance use disorders and clients who have experienced trauma.
Mountainside Chelsea – Outpatient Clinic is accredited by Commission on Accreditation of Rehabilitation Facilities (CARF) and The Joint Commission and licensed or certified by the state substance use treatment agency and state department of health.
Support services include aftercare/continuing care, discharge planning, naloxone and overdose education, and outcome follow-up after discharge.
Sliding fee scale (fee is based on income and other factors)
| Licensing & accreditation | State substance use treatment agency, State department of health, Commission on Accreditation of Rehabilitation Facilities (CARF), The Joint Commission |
|---|---|
| Ages accepted | Young Adults, Adults, Seniors |
| Operated by | Private for-profit organization |
243 West 18th Street
New York, NY 10011
Facility's own contact860-824-1397 · Mountainside.com
Mountainside Chelsea – Outpatient Clinic lists the following levels of care: intensive outpatient (IOP), outpatient, medication-assisted treatment (MAT), dual diagnosis, and telehealth. Services can change, so confirm current programs before admission.
According to SAMHSA data, Mountainside Chelsea – Outpatient Clinic accepts private health insurance and cash or self-payment. Your exact coverage depends on your plan and network status. You can check your benefits with your insurer, or call (877) 847-2855 for a free benefits check.
Mountainside Chelsea – Outpatient Clinic does not list detox services. If you need medically supervised withdrawal first, see detox programs or call (877) 847-2855 for help finding one.
Yes. Mountainside Chelsea – Outpatient Clinic reports accreditation from The Joint Commission and CARF. Accreditation means the facility meets independent quality and safety standards.
Mountainside Chelsea – Outpatient Clinic accepts young adults, adults, and seniors. Specialized groups include adult women, adult men, clients with co-occurring mental and substance use disorders, and clients who have experienced trauma.
Admission usually starts with a phone screening and insurance check, followed by an assessment. You can contact Mountainside Chelsea – Outpatient Clinic directly at 860-824-1397. To compare Mountainside Chelsea – Outpatient Clinic with other options and verify your insurance, call our admissions helpline at (877) 847-2855. Our helpline is not affiliated with Mountainside Chelsea – Outpatient Clinic.
Compare options
New York, NY 10030
Joint Commission accredited
Levels of care
Payment accepted
Medicaid · Private insurance · TRICARE +1 more
“Get help” calls our free helpline, not this facility.
New York, NY 10009
CARF accredited
Levels of care
Payment accepted
Medicaid · Private insurance · Self-pay +2 more
“Get help” calls our free helpline, not this facility.
New York, NY 10010
Joint Commission accredited
Levels of care
Payment accepted
Private insurance · TRICARE · Self-pay +1 more
“Get help” calls our free helpline, not this facility.
New York, NY 10018
Joint Commission accredited
Levels of care
Payment accepted
Medicaid · Private insurance · Self-pay +2 more
“Get help” calls our free helpline, not this facility.
New York, NY 10035
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +2 more
“Get help” calls our free helpline, not this facility.
New York, NY 10019
Joint Commission accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +2 more
“Get help” calls our free helpline, not this facility.
Source: SAMHSA FindTreatment.gov, data updated October 2026. Facilities report this information to SAMHSA, and it can change, so confirm details before admission. A listing is not an endorsement. StartDrugRehab is not affiliated with Mountainside Chelsea – Outpatient Clinic.
