150+ Mental Health Professionals Trust OSI

Therapy Spaces Designed for Healing

Private offices with calming environments in the heart of Washington D.C. Flexible scheduling, professional reception, and everything your practice needs — just steps from Farragut Square.

Flexible hours from $35/month · No lease, no deposit
Private & Confidential
HIPAA-compliant rooms
4.9★ Rating
45 years in business
150+
MHP Members
K St.
Prestigious Address
24/7
Online Scheduling
$0
Setup Fees

Your Practice Deserves the Perfect Space

Whether you're launching a new practice or expanding your services, our therapy offices provide the perfect environment for meaningful connection and healing.

Professional Environment

Thoughtfully furnished spaces with comfortable seating and calming decor designed to put your clients at ease.

Complete Privacy

Secure facilities designed for client confidentiality and HIPAA-compliant therapeutic sessions.

Client-Centered Waiting Areas

Serene waiting spaces with soothing nature videos and calming ambiance for pre-session relaxation.

Telehealth Ready

High-speed internet and dedicated tech setup for reliable virtual therapy sessions when you need them.

Reception Support

Professional client check-in, scheduling assistance, and compassionate call handling by trained staff.

Extended Hours Access

Flexible scheduling to accommodate early morning and evening appointments around your clients' needs.

Everything You Need to Focus on Your Clients

We handle all the operational details so you can focus entirely on what matters most — your clients. Join our community of mental health professionals and discover how the right environment can elevate your practice.

GET YOUR FREE DAY PASS Limited

Easy Scheduling

In-house booking system for managing your appointments on any device

Prime Location

Easy access via public transportation and convenient parking options

Immaculate Spaces

Regularly maintained rooms that make a professional impression

Flexible Terms

Part-time, full-time, or shared options to match your practice needs

Professional Community

Connect with fellow practitioners for networking and referrals

Refreshment Center

Kitchenette with complimentary beverages for you and your clients

Use Your K Street Address for Insurance Panel Applications

A professional business address is one of the first things insurance companies verify when reviewing panel applications. Our prestigious 1629 K Street N.W. address gives your practice the credibility that panels expect — without the cost of a full-time office lease.

Recognized DC Address

A verifiable K Street address that meets panel credentialing requirements

Dedicated Mail Handling

Insurance correspondence received, scanned, and forwarded to you promptly

Live Call Answering

Professional receptionists answer your practice line — panels can verify your office

Certificate of Occupancy

We provide the paperwork needed for DC licensing and panel applications

Why this matters: Many therapists lose months of potential revenue waiting for panel acceptance. A verifiable professional address, dedicated phone line, and receptionist services help your application stand out and get approved faster.

Ask About Panel-Ready Packages

Panel-Ready Practice Address

1629 K Street N.W., Suite 300
Washington, DC 20006
  • Accepted by major insurance panels
  • CAQH-compatible business address
  • NPI registry-ready location
  • Lobby listing available
The Complete Guide For
Mental Health
Professionals
in Washington D.C.
Free Download

Download Our Guide for Mental Health Professionals

Everything you need to know about setting up or growing your therapy practice in Washington D.C. — from choosing the right office space to building your client base.

  • Choosing the right therapy office setup
  • Privacy, HIPAA & compliance considerations
  • Flexible plans & pricing comparison
  • Getting started checklist
Download Free Guide (PDF)

Visuals and Voices

Take a look inside our therapy spaces and hear from the mental health professionals who call OSI home.

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Located at the corner of K Street and 17th — Washington D.C.'s most prestigious business address

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Modern executive office with marble desk, lounge seating, and panoramic city views on K Street.

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Quiet, calming consultation space with plush seating — ready for your next client session

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Classic executive office with rich leather furnishings, display shelving, and natural light overlooking downtown.

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Warm, inviting therapy space with chaise lounge and comfortable seating — designed for mental health professionals

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Our staffed front desk welcomes your clients with a polished, professional first impression.

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Fully furnished private office with natural light and downtown D.C. views — move in today, no lease required.

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Versatile private suite with comfortable seating and workspace — ideal for counseling or client meetings.

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Comfortable counseling room with relaxed seating and a calming atmosphere — purpose-built for therapists

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Compact private office with desk and guest seating — an affordable professional space for solo practitioners.

Ready to Create the Perfect Therapeutic Space?

Join 150+ mental health professionals who trust OSI for their practice. Share your needs and we'll help you find the ideal environment for you and your clients.

Plans Tailored for Mental Health Professionals

Transparent pricing with no hidden fees or long-term commitments. Designed for practitioners at every stage of their career.

Therapist flexible hours plan icon for mental health office spaceFlexible Hours

$35/mo
  • Three hours of premium office use
  • $14/hour for additional time
  • Mobile and desktop scheduling
  • Standing reservation options

Perfect for practitioners starting out or offering limited in-person sessions.

Get Started
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Contact OSI Offices

Tell us what you need for your therapy practice and our team will reach out promptly.

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Free Day Pass Request

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