Maryville Inc, Williamstown #2

Maryville Inc is a NJ DMHAS-licensed addiction treatment provider in Williamstown, Gloucester County. Per the 2024 SAMHSA National Directory, the facility offers inpatient/residential, medically supervised detox, and medication-assisted treatment. Accreditation / certification: CARF International. This is one of 1 locations operated under the Maryville Inc organization — see the multi-site section below.

At a glance

• Address: 1903 Grant Avenue, Williamstown, NJ 08094
• County: Gloucester
• Phone: 856-629-0244
• Licensure: NJ DMHAS-licensed (state substance use treatment agency)
• Accreditation: CARF International
• Levels of care: Residential, Residential detoxification, and Short-term residential
• MAT medications offered: Buprenorphine and Naltrexone
• Populations served: Women, Co-occurring mental health and SUD, Co Occurring Pain Sud, and Trauma Survivors
• Payment accepted: Private insurance, NJ FamilyCare (Medicaid), State-funded / SAMHSA block grant, Sliding fee scale, and Self-pay / cash

Program overview

Per public records, Maryville Inc provides inpatient/residential, medically supervised detox, and medication-assisted treatment. The program operates from 1903 Grant Avenue and serves patients across Gloucester County and surrounding areas. Specific day-to-day program schedules, clinical staff composition, and admission capacity are not published in SAMHSA’s directory — these details should be confirmed directly with the facility during your intake call.

What Maryville Inc is documented to offer

• Accreditation: Maryville Inc holds CARF International. Accreditation is a voluntary external quality review — facilities with multiple accreditations have committed to ongoing clinical and operational standards verification.
• Medication-assisted treatment: the facility dispenses or prescribes Buprenorphine and Naltrexone for opioid use disorder. MAT is the most evidence-based pharmacotherapy for OUD.
• Medically supervised detox: the facility offers clinical detoxification, which is essential for safely managing alcohol, benzodiazepine, and high-dose opioid withdrawal.
• NJ FamilyCare accepted: important for Medicaid-covered patients. Verify which of the five current MCO networks the facility participates in before assuming in-network status.
• State-funded slots available: important for uninsured/underinsured NJ residents. Contact the DMHAS Access Center at 844-276-2777 for current availability.

Who Maryville Inc is typically appropriate for

Based on the public data, Maryville Inc is likely appropriate for patients who need 24-hour clinical care — significant withdrawal risk, acute co-occurring symptoms, unstable housing, or prior outpatient failure, patients needing medically supervised inpatient detox before stepping down to residential or outpatient treatment, and patients with co-occurring mental health and substance use disorders needing integrated treatment.

This is a directional assessment from public records — it’s not a substitute for a clinical intake. The facility’s admissions team will assess fit during your initial call.

What to verify before calling Maryville Inc

• NJ DMHAS licensure — confirm current status via the NJ DMHAS licensure lookup.
• Insurance network status — call your insurance carrier and verify that Maryville Inc is currently in-network for your specific plan. Self-reported payer acceptance in the SAMHSA directory is a starting point, not proof of current in-network contract.
• Current level of care availability — ask specifically about bed or slot availability at the level of care you need. SAMHSA-listed services do not guarantee current open admissions.
• Medications policy — if you’re on prescribed buprenorphine, methadone, or other psychiatric medication, confirm the facility’s policy on maintaining your medication during treatment.
• Length-of-stay expectations — ask what a typical length of stay looks like for patients with your clinical presentation.
• MAT specifics — which specific medication(s), induction/transition protocol, and continuation plan post-discharge.
• CARF accreditation — verify current status at carf.org.

Related links

• Gloucester County facilities directory
• Facilities pillar
• NJ MAT providers
• NJ detox facilities
• NJ inpatient facilities
• NJ dual diagnosis programs
• NJ FamilyCare facility filter
• Free and state-funded treatment

Considering Maryville Inc?

Not sure if Maryville Inc is the right fit? Call (888) 699-0742 to talk through your options. We’ll help you understand what to ask, what insurance considerations apply, and how it compares with other facilities in the area.

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About this profile

Sources: SAMHSA 2024 National Directory of Drug and Alcohol Abuse Treatment Programs, NJ DMHAS licensure records.

Last verified: 2026-04-21

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Inclusion is not endorsement. Appearance on this directory reflects publicly-available licensure and accreditation data. It does not imply the site recommends Maryville Inc over any other facility.