618 Poquonnock Road, Groton, CT 06340
Part of Stonington Institute · 2 locations listed See all locations →
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 34 Google reviews (2.6★), weighted toward a 4.0 average until there are enough reviews to be reliable.
Located at 618 Poquonnock Road in Groton, Connecticut, Stonington Institute is a private addiction treatment program.
Care options include partial hospitalization (PHP), intensive outpatient (IOP), medication-assisted treatment (MAT), and co-occurring (dual diagnosis) mental health treatment. Clinicians use approaches such as anger management, brief intervention, cognitive behavioral therapy, contingency management/motivational incentives, and motivational interviewing. For opioid use disorder, the program uses buprenorphine and naltrexone. It also prescribes medication for alcohol use disorder.
Payment options include Medicaid, private health insurance, cash or self-payment, and state-financed health insurance. Coverage depends on your specific plan, so verify benefits before admission.
The program accepts young adults, adults, and seniors. It offers specialized groups for young adults, women, pregnant/postpartum women, men, and seniors or older adults.
Stonington Institute is accredited by The Joint Commission and licensed or certified by the state substance use treatment agency, state mental health department, and state department of health.
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 | State substance use treatment agency, State mental health department, State department of health, The Joint Commission |
|---|---|
| Ages accepted | Young Adults, Adults, Seniors |
| Operated by | Private for-profit organization |
Southeastern Connecticut Planning Region, CT has 20 SAMHSA-listed addiction treatment facilities for 282,602 residents. 3 facilities in the county list detox services.
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.
Stonington Institute lists the following levels of care: partial hospitalization (PHP), intensive outpatient (IOP), medication-assisted treatment (MAT), and dual diagnosis. Services can change, so confirm current programs before admission.
According to SAMHSA data, Stonington Institute accepts medicaid, private health insurance, cash or self-payment, and state-financed health insurance plan other than medicaid. 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.
Stonington Institute 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. Stonington Institute reports accreditation from The Joint Commission. Accreditation means the facility meets independent quality and safety standards.
Stonington Institute accepts young adults, adults, and seniors. Specialized groups include young adults, adult women, pregnant/postpartum women, adult men, and seniors or older adults.
Southeastern Connecticut Planning Region, CT has 20 SAMHSA-listed treatment facilities for about 282,602 residents: 3 list detox services, 15 offer buprenorphine or methadone treatment and 6 offer 24-hour care (2026 data).
The nearest other SAMHSA-listed programs are SE Council on Alc and Drug Dep Inc – Withdrawal Management (New London, 2.3 miles), SE Council on Alc and Drug Dep Inc – Gordon House (New London, 2.4 miles), and Sound Community Services Inc (New London, 2.5 miles). Distances are straight-line.
Stonington Institute has a 2.6-star rating from 34 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 Stonington Institute directly at 860-445-3695. Our admissions helpline at (833) 589-6933 can connect you with a licensed treatment provider, which may not be Stonington Institute. Our helpline is not affiliated with Stonington Institute.
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“Get help” calls our free helpline, not this facility.
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“Get help” calls our free helpline, not this facility.
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“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.com is not affiliated with Stonington Institute.
