Sound-Treated & Confidential
Solid-core doors, sound-masking at every threshold, and white-noise in shared corridors. Session audio stays in the room.
120+ Mental Health Professionals on K Street
Private Therapy Offices Designed for Healing
Private, quiet rooms in downtown Washington DC — built for clinical work and engineered so what happens inside your session stays inside. Month-to-month, no deposit, clients minutes from Farragut Square. Family-owned on K Street since 1981.
- Sound-treated rooms with white-noise masking at every door
- Calming waiting area with secure client check-in
- Fiber-speed Wi-Fi for telehealth & hybrid practice
- Use your K Street address on insurance-panel applications
Get pricing & available tour times
Tell us a little about your practice — a human replies the same business day with plan options and open tour slots.
Why Therapists Choose OSI
Built for Clinical Work — Not Retrofitted For It
Every design choice, from soundproofing to waiting-room lighting, is made with clinical confidentiality and client comfort in mind.
Calming Waiting Area
Warm lighting, plants, quiet music, and nature videos. Clients arrive regulated, not stressed — a small thing that changes the first 10 minutes of every session.
Telehealth-Ready Rooms
Fiber-speed Wi-Fi, 4K displays on request, and acoustic treatment that keeps virtual sessions HIPAA-aware and visually professional.
Flexible, Clinician-Friendly Scheduling
Book by the hour, half-day, day, or full-time. Standing reservations for your weekly panel — no commitment to days you don’t need.
Insurance-Panel Ready
DC Certificate of Occupancy plus a prestigious K Street address makes this the kind of professional address insurance panels and referral sources expect.
Warm Reception
Staffed front desk that knows your clients by name, greets them by preferred pronouns, and protects confidentiality in shared spaces.
Transparent Pricing
Plans Built Around a Therapy Caseload
Whether you see 3 clients a week or run a full panel, there’s a plan that fits without paying for space you don’t use.
Flexible Hours
$35 /month
- 3 hours of room use each month
- Additional hours just $14/hour
- Mobile & desktop scheduling
- Access to the calming waiting area
Professional Suite
$165 /month
- 16 hours of premium room use
- K Street / Farragut Square address
- Mail handling and scanning
- DC phone number with voicemail-to-email
- Lobby listing for client referrals
- Registered agent services available
Custom / Full-Time
Talk to us
- Dedicated room or private office
- Daily or 24/7 access options
- Group-therapy-sized rooms available
- Branded lobby listing
- Ideal for established practices
No deposit · No setup fee · Cancel any month · See all OSI plans →
Insurance Panel Ready
Use your K Street address on panel applications
Getting paneled with BCBS, Aetna, Cigna, Tricare, or Medicaid takes a real office address. OSI’s 1629 K Street NW meets every common panel requirement:
- DC Certificate of Occupancy
- Verifiable building with a staffed reception
- Available during stated business hours
- Mail handling with signed receipt for official correspondence
Members routinely use our address on CAQH, Psychology Today profiles, and Google Business listings.
From Our Members
What Therapists Say About Working Here
"OSI has been instrumental in growing my business from a few evening a week to a full time thriving practice. The front desk is approachable and helpful, always willing to help me when I need some administrative support. Mumbi, the office manager, is a joy. She has consistently been attentive to the needs of my practice and invested in helping me establish systems that keep my business working seamlessly. The variety of services OSI has offered me has been invaluable. The office suite is safe and secured at all times of the day, mail is delivered in a timely fashion, and my account is charged automatically on a monthly basis. Even when I am out of the office, I am notified when a package arrives for me. As a sole proprietor, I lack the luxury and assistance of an HR department, IT team, and an administrative specialist. Mumbi, Joseph, Jack, and the front desk have all stepped up at various times over the past two years to ensure I have an office space that works on behalf of me and the people I serve."
Ready to see a therapy room in person?
Most of our members decide after one tour. Walk the waiting area, stand in a sound-treated room, meet the front desk. No pressure — just clarity.
Guides & Resources
Resources for Therapists & Counselors
Private Practice Startup Guide
Step-by-step guide to launching your private therapy practice in Washington DC.
In-Person Therapy vs Online Platforms
Why in-person sessions produce better outcomes and how office space supports your practice.
Virtual Office for Practitioners
Professional address & mail handling for therapists who see clients at multiple locations.
Office near Farragut Square
Steps from the Farragut Square metro — accessible to clients across the DC area.
Best DC Neighborhoods for Therapy Practice
A clinician's guide to picking the right DC neighborhood for your client base and commute.
Building a DC Therapist Referral Network
How to grow client referrals through DC's clinical community, panels, and EAPs.
Shared Space vs Full-Time Lease for Therapists
Cost breakdown for early-career and part-time DC therapists weighing their options.
Compare DC Therapy-Office Providers
Side-by-side: OSI vs WeWork, Regus, Carr, Industrious, AdvantEdge for clinical work.
FAQ
Therapy Office Space — Common Questions
Answers to what mental health professionals most commonly ask before booking a tour at OSI Offices on K Street NW.
Our therapy rooms are sound-treated with solid-core doors, acoustic seals, and white-noise masking in the corridor to keep session audio confidential. While no office is a recording studio, every therapist-member who has walked the space has been satisfied with its acoustic privacy — we encourage you to test it yourself on a tour.
Yes. 1629 K Street NW has a DC Certificate of Occupancy, a staffed reception during business hours, and fulfills the “real office address” requirements of BCBS, Aetna, Cigna, Tricare, and most Medicaid panels. Many OSI members also use the address on their CAQH and Psychology Today profiles.
Clients arrive in our calming waiting area, where the front-desk team greets them by preferred name and lets you know they’re here — either by text, Slack, or a quiet visit to your door. Many members prefer to simply open their door at the top of the hour; either workflow is supported.
Our spaces are HIPAA-aware: private rooms, acoustic separation, locked file cabinets on request, confidential paper-shred service, and a staff trained to protect client information in shared areas. HIPAA compliance ultimately lives with your practice’s policies and BAAs, but our physical environment supports them.
Yes — many members split their weeks between in-person and telehealth. Each room has fiber-grade Wi-Fi, great natural light, a neutral professional backdrop, and acoustic separation for video work. Some plans include standing reservations you can use flexibly week to week.
Plans start at $35/month with 3 included hours, scaling to $165/month (16 hours, with address & mail) and beyond to full-time dedicated rooms. There are no deposits, no setup fees, and every plan is month-to-month. Request a custom quote — we’ll model pricing around your caseload.
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Transparent packages starting at $35/mo with no setup fees or long-term contracts.
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