491 Amherst Street Suite105, Nashua, NH 03063
Our 10-point score combines licensing and accreditation, the levels of care and payment options this facility reports, and patient ratings from Google and StartDrugRehab.com reviewers. Paid or claimed listings never change a score. Read full methodology
Patient ratings use 86 Google reviews (4.2★), weighted toward a 4.0 average until there are enough reviews to be reliable.
Located at 491 Amherst Street in Nashua, New Hampshire, GateHouse Treatment is a private addiction treatment program.
Care options include partial hospitalization (PHP), intensive outpatient (IOP), co-occurring (dual diagnosis) mental health treatment, and telehealth therapy. Clinicians use approaches such as anger management, brief intervention, cognitive behavioral therapy, contingency management/motivational incentives, and motivational interviewing.
Payment options include Medicaid, military insurance (TRICARE), private health insurance, and cash or self-payment. Coverage depends on your specific plan, so verify benefits before admission.
The program accepts young adults, adults, and seniors. It offers specialized groups for women, men, and seniors or older adults.
GateHouse Treatment is accredited by The Joint Commission.
Based on SAMHSA-listed programs in our directory. Rankings use the StartDrugRehab Score; facilities can't pay to change them. Distances are straight-line.
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| Licensing & accreditation | The Joint Commission |
|---|---|
| Ages accepted | Young Adults, Adults, Seniors |
| Operated by | Private for-profit organization |
Hillsborough County, NH has 26 SAMHSA-listed addiction treatment facilities for 430,462 residents. 5 facilities in the county list detox services. 93 people died of a drug overdose in the county in the 12 months to March 2026 (CDC provisional data): 21.6 per 100,000 residents, compared with 18 statewide.
Source: StartDrugRehab Treatment Deserts 2026, built from SAMHSA FindTreatment.gov, U.S. Census 2024 population estimates and CDC overdose data. Counts are SAMHSA-listed facilities only.
GateHouse Treatment lists the following levels of care: partial hospitalization (PHP), intensive outpatient (IOP), dual diagnosis, and telehealth. Services can change, so confirm current programs before admission.
According to SAMHSA data, GateHouse Treatment accepts medicaid, federal military insurance (e.g., tricare), 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 (833) 589-6933 for a free benefits check.
GateHouse Treatment does not list detox services. If you need medically supervised withdrawal first, see detox programs or call (833) 589-6933 for help finding one.
Yes. GateHouse Treatment reports accreditation from The Joint Commission. Accreditation means the facility meets independent quality and safety standards.
GateHouse Treatment accepts young adults, adults, and seniors. Specialized groups include adult women, adult men, seniors or older adults, and clients who have experienced trauma.
Hillsborough County, NH has 26 SAMHSA-listed treatment facilities for about 430,462 residents: 5 list detox services, 22 offer buprenorphine or methadone treatment and 3 offer 24-hour care (2026 data).
GateHouse Treatment is #4 of 10 ranked programs in Nashua in our 2026 ranking, based on the StartDrugRehab Score (accreditation, levels of care, payment options, data completeness and patient ratings). Facilities cannot pay to change their rank.
The nearest other SAMHSA-listed programs are Greater Nashua Mental Health (Nashua, under 1 miles), Greater Nashua Council on Alcoholism – Keystone Hall (Nashua, 1.1 miles), and Harbor Care – Cynthia Day Family Center (Nashua, 1.1 miles). Distances are straight-line.
GateHouse Treatment has a 4.2-star rating from 86 Google reviews (as of November 2026). Ratings reflect individual experiences and are not a measure of clinical quality.
Admission usually starts with a phone screening and insurance check, followed by an assessment. You can contact GateHouse Treatment directly at 603-945-5525. Our admissions helpline at (833) 589-6933 can connect you with a licensed treatment provider, which may not be GateHouse Treatment. Our helpline is not affiliated with GateHouse Treatment.
Compare options
Nashua, NH 03060
Joint Commission accredited
Levels of care
Payment accepted
Medicaid · Private insurance · TRICARE +1 more
“Get help” calls our free helpline, not this facility.
Nashua, NH 03063
CARF accredited
Levels of care
Payment accepted
Medicaid · Private insurance · TRICARE +1 more
“Get help” calls our free helpline, not this facility.
Nashua, NH 03063
CARF accredited
Levels of care
Payment accepted
Medicaid · Self-pay
“Get help” calls our free helpline, not this facility.
Nashua, NH 03060
Joint Commission accredited
Levels of care
Payment accepted
Medicaid · Private insurance · TRICARE +1 more
“Get help” calls our free helpline, not this facility.
Nashua, NH 03060
CARF accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +3 more
“Get help” calls our free helpline, not this facility.
Nashua, NH 03060
NCQA accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 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. Logo courtesy of gatehousetreatment.com. A listing is not an endorsement. StartDrugRehab.com is not affiliated with GateHouse Treatment.
