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Verified Treatment Center

GateHouse

Nashua, NH · 03063

SAMHSA Verified PHP IOP Dual Dx
Specializes in Trauma-Informed

Key Takeaways for GateHouse

  • PHP · IOP · Dual Dx offered
  • Accepts Medicaid, Private insurance, TRICARE/VA
  • SAMHSA-listed facility
  • Direct line available · Helpline free & confidential 24/7

About GateHouse

GateHouse is an addiction-treatment facility located in Nashua, NH. The facility offers a continuum of care across multiple levels — PHP, IOP, Dual Dx — which means it can, in principle, hold a patient across the arc of a typical treatment episode. What follows is an orientation — not a review — to the practical questions worth asking before admission.

Care levels at GateHouse

The care-level question matters because what a facility offers is what it can realistically treat well. The facility offers a continuum of care across multiple levels — PHP, IOP, Dual Dx — which means it can, in principle, hold a patient across the arc of a typical treatment episode. The practical question is whether it is genuinely strong at each level, or whether one level is the core business and the others are secondary. Before admission, an independent clinical assessment (from a primary-care doctor, licensed substance-use counselor, or addiction-medicine physician) can confirm whether GateHouse's offerings match the clinical need.

Insurance and payment

GateHouse accepts both Medicaid and commercial insurance, which is the broadest payer profile and typically correlates with programs that operate at scale across the economic spectrum. The facility also accepts TRICARE or military benefits. What tends to produce post-admission financial surprise is not the facility being out of network — it is the verbal assurance that did not make it into writing. Ask for the written VOB before admission, save the email, and the rest of the financial conversation becomes a lot simpler.

Specialty programming

The facility's documented specialty programming includes: Adult women, Adult men, Seniors or older adults. Specialty programming varies substantially by facility — some facilities offer "dual diagnosis" as a marketing category but not a clinical differentiator. Ask for the specific clinical-team credentials and the actual hours of specialty-specific content per week.

Before you call

Three questions to put to GateHouse before admission: the specific ASAM level the facility is billing; the written Verification of Benefits for your specific plan product; the MAT policy (continuation of buprenorphine or methadone during residential, specifically). If the clinical situation involves opioid use disorder, confirm explicitly whether GateHouse offers medication-assisted treatment — buprenorphine, methadone, or naltrexone. Programs that do not are operating outside the current standard of care. Getting answers in writing protects against the downstream surprises.

Listing sourced from the SAMHSA Behavioral Health Treatment Services Locator. Data last synced April 2026. Verify current programs directly with the facility.

GateHouse at a Glance

Levels of care

PHP · IOP · Dual Dx

Service settings

Outpatient, Outpatient day treatment or partial hospitalization, Intensive outpatient treatment

Therapy approaches

Anger management, Brief intervention, Cognitive behavioral therapy, Contingency management/motivational incentives, Motivational interviewing, Matrix Model

Age groups

Young Adults, Adults

Special populations

Adult women, Adult men, Seniors or older adults, Clients who have experienced trauma

Insurance & Payment Accepted

Confirm in-network status before admission — verification is free.

Medicare

Private insurance

Coverage details →

TRICARE / VA

Coverage details →

Contact & Location

Address

491 Amherst Street, Nashua, NH 03063

Facility direct line

717-393-3215