GateHouse Treatment

✓ Last verified from the SAMHSA dataset on June 16, 2026 · call to confirm availability and details before going

Contact

491 Amherst Street, Nashua, NH 03063

Phone: (603) 945-5525

Insurance and payment

  • Insurance accepted; network status unknown
  • Medicaid accepted; plan participation unknown
  • Cash / self-pay available
  • Military insurance accepted

Call to verify network status, benefits, prior authorization, and any out-of-pocket costs before scheduling.

Services

Type of Care

Substance use treatmentTreatment for co-occurring substance use plus either serious mental illness (SMI) in adults and/or serious emotional disturbance (SED) in children

Service Setting

OutpatientOutpatient day treatment or partial hospitalizationIntensive outpatient treatment

External Opioid Medications Source

In-network prescribing entityOther contracted prescribing entityNo formal relationship with prescribing entity

Type of Alcohol Use Disorder Treatment

Accepts clients using medication assisted treatment for alcohol use disorder but prescribed elsewhere

External Source of Medications Used for Alcohol Use Disorder Treatment

In-network prescribing entityOther contracted prescribing entityNo formal relationship with prescribing entity

Type of Opioid Treatment

Accepts clients using MAT but prescribed elsewhere

Treatment Approaches

Anger managementBrief interventionCognitive behavioral therapyContingency management/motivational incentivesMotivational interviewingMatrix ModelRelapse preventionSubstance use disorder counselingTrauma-related counselingTelemedicine/telehealth therapy

Facility Operation

Private for-profit organization

License/Certification/Accreditation

The Joint Commission

Payment/Insurance Accepted

MedicaidFederal military insurance (e.g., TRICARE)Private health insuranceCash or self-payment

Special Programs/Groups

Adult womenAdult menSeniors or older adultsClients who have experienced trauma

Assessment/Pre-treatment

Comprehensive substance use assessmentOutreach to persons in the communityScreening for tobacco useScreening for substance useScreening for mental disorders

Testing

Breathalyzer or blood alcohol testingDrug and alcohol oral fluid testingDrug or alcohol urine screeningHIV testingSTD testingTesting for Hepatitis B (HBV)Testing for Hepatitis C (HCV)

Transitional Services

Discharge PlanningNaloxone and overdose educationOutcome follow-up after discharge

Recovery Support Services

Self-help groupsHousing servicesAssistance with obtaining social servicesMentoring/peer supportEmployment counseling or training

Education and Counseling Services

Health education services other than HIV/AIDS or hepatitisSubstance use disorder educationIndividual counselingGroup counselingFamily counselingMarital/couples counseling

Facility Smoking Policy

Smoking permitted in designated area

Age Groups Accepted

Young AdultsAdultsSeniors

Sex Accepted

FemaleMale

Language Services

Sign language services for the deaf and hard of hearing

Facility Vaping Policy

Vaping permitted in designated area

Ancillary Services

Case management serviceSocial skills developmentTransportation assistanceSuicide prevention services

When you call, ask:

  • Are you taking new patients right now?
  • Do you accept my insurance, Medicaid, or a sliding fee scale?
  • Is there a waitlist — and how long?
  • What should I bring to the first appointment?
  • Do you offer telehealth if I can't get there?

Five minutes on the phone can save a wasted trip.