Where is care provided?

Residential care is provided in Pasadena, Maryland, on a 40-acre wooded campus with four homes. Extended Care housing and the outpatient programs (PHP, IOP and Virtual IOP) are based in Arnold.Locations

What are the four homes on the campus?

Original Home, River Glen One and River Glen Two for dual diagnosis residential care, and River Glen Three for primary mental health.Pasadena campus

How large is each home?

Original Home serves about 16 clients; each River Glen home serves about eight. The campus maximum is 40 clients.Pasadena campus

Where is the outpatient office?

Arnold, Maryland, on Ritchie Highway. Admissions confirms the suite and arrival details.Arnold outpatient

Is Extended Care on the Pasadena campus?

No. The Extended Care House is in Arnold, distinct from the Pasadena residential campus.Extended Care House

Care settings · Maryland

Compare residential, outpatient, and supportive housing locations.

Residential care is based in Pasadena. Extended Care and outpatient services are in Arnold.

Campus map

Pasadena, MD Residential Campus: 40-Acre Sanctuary & Medical Detox

Pasadena · Campus

Four houses share the Pasadena woodland campus.

Dual Diagnosis Residential Treatment & Detox in Pasadena, MD

Primary Mental Health Residential Treatment in Pasadena, MD (8-Bed Home)

Pasadena, MD

Original Home

Dual Diagnosis Residential

The original Tranquility Woods residence provides Dual Diagnosis Residential care and medically supported withdrawal management.

Dual Diagnosis Residential Treatment & Detox in Pasadena, MD

Pasadena, MD

River Glen One

Dual Diagnosis Residential

A residential home serving adults receiving integrated treatment for substance use and co-occurring mental health concerns.

Dual Diagnosis Residential Treatment & Detox in Pasadena, MD

Pasadena, MD

River Glen Two

Dual Diagnosis Residential

A residential home serving the Dual Diagnosis Residential program within the Pasadena campus.

Dual Diagnosis Residential Treatment & Detox in Pasadena, MD

Pasadena, MD

River Glen Three

Primary Mental Health Residential

A dedicated residential environment for adults whose primary treatment needs involve mental health.

Primary Mental Health Residential Treatment in Pasadena, MD (8-Bed Home)

Pasadena, MD

Extended Care House

Arnold · Extended Care

Structured housing in Arnold, with support as you move toward greater independence after residential treatment.

Extended Care & Transitional Recovery Program in Arnold, MD

Arnold, MD

Arnold, MD Outpatient Center: PHP & IOP Day Treatment Near Annapolis

Arnold · PHP & IOP

Modern outpatient clinical suites at 1460 Ritchie Hwy in Arnold, MD offering structured daytime PHP and morning/evening IOP cohorts.

Partial Hospitalization Program (PHP) in Arnold, MD & Online

Intensive Outpatient Program (IOP) in Arnold, MD & Virtual

Virtual IOP | Online Intensive Outpatient Rehab & Mental Health in Maryland

Arnold, MD

Four homes · one campus

The Pasadena campus.

We’ll talk with you about your treatment needs and confirm which home your care would begin in.

Our locations

All locations at a glance.

Admissions can explain the differences between residential care, outpatient sessions, and recovery housing, and confirm your destination.

Pasadena, MD Residential Campus: 40-Acre Sanctuary & Medical Detox

Campus

· Pasadena, MD

Original Home

House

· Dual Diagnosis Residential

River Glen One

House

· Dual Diagnosis Residential

River Glen Two

House

· Dual Diagnosis Residential

River Glen Three

House

· Primary Mental Health Residential

Extended Care House

House

· Arnold, MD

Arnold, MD Outpatient Center: PHP & IOP Day Treatment Near Annapolis

Office

· Arnold, MD

Common questions

What to know before you call.

Find answers about treatment, daily life, and getting started.

Search all 214 questions

Our blog

From the journal

Articles and care guides from the Tranquility Woods journal.

All articles

21 Oct 2026

Dual Diagnosis Care: 3 Questions About Assessment

Read the article

21 Oct 2026

Alcohol and anxiety: when to ask for help

Read the article

21 Oct 2026

Dual diagnosis or primary mental health treatment: what is the difference?

Read the article