Specialty orthopedic care
Knee, hip, shoulder, elbow, foot, ankle, hand, wrist, and spine — one diagnosis, one care team.
- General orthopedics
- Sports medicine
- Joint replacement
- Orthopedic trauma
LAOSS Tarzana brings advanced orthopedic surgery, spine care, and same-day treatment to the southwest San Fernando Valley — serving Tarzana, Reseda, Encino, Woodland Hills, Winnetka, Northridge, and Canoga Park. Modern facility, state-of-the-art techniques, and a compassionate team.

Same-day appointments. Coordinated care across specialties.
| Mon | 8:00 AM – 5:00 PM |
|---|---|
| Tue | 8:00 AM – 5:00 PM |
| Wed | 8:00 AM – 5:00 PM |
| Thu | 8:00 AM – 5:00 PM |
| Fri | 8:00 AM – 5:00 PM |
| Sat | Closed |
| Sun | Closed |
Patient parking available at the Ventura Blvd medical building.
On Ventura Blvd, minutes from US-101 (Reseda and Tampa Ave exits) and the Metro Orange Line.
Our Tarzana office is located on Ventura Blvd in the southwest San Fernando Valley, minutes from the US-101 freeway via the Reseda and Tampa Ave exits. This location is a hub for our orthopedic spine surgery practice — Dr. Siamak Yasmeh, our fellowship-trained spine surgeon, sees Tarzana patients here regularly.
The full LAOSS service line is available at this location: orthopedic surgery, joint replacement, sports medicine, arthroscopy, trauma surgery, and pediatric orthopedics. We combine state-of-the-art techniques with the personal touch our smaller practice setting allows.
Knee, hip, shoulder, elbow, foot, ankle, hand, wrist, and spine — one diagnosis, one care team.
Most patients leave their first visit with imaging-confirmed answers and a clear treatment plan.
Same-day acute-injury slots, PPO-friendly billing, multilingual team, and workers' compensation experience.












We see patients from across the Tarzana region. Our most common patient communities include:
Not from one of these neighborhoods? You're still welcome — LAOSS sees patients from across Greater Los Angeles, the Conejo Valley, and the Santa Clarita Valley at this office.
Same-day and next-day appointments available. Call us or book online — we'll route you to the right specialist.