Orthopedic surgery & spine care in Tarzana with same-day access.
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.
See a specialist this week
Board-certified surgeons and podiatrists across eight Los Angeles area neighborhoods.
Key takeaways
- LAOSS Tarzana at 18840 Ventura Blvd, Suite 208, southwest San Fernando Valley.
- Home base for our fellowship-trained orthopedic spine surgeon, Dr. Siamak Yasmeh.
- Same-day access for acute injuries; advanced spine, joint, and sports care.
- Call (818) 708-3333 to schedule, or book online.
Office hours
| Mon | 8:00 AM to 5:00 PM |
|---|---|
| Tue | 8:00 AM to 5:00 PM |
| Wed | 8:00 AM to 5:00 PM |
| Thu | 8:00 AM to 5:00 PM |
| Fri | 8:00 AM to 5:00 PM |
| Sat | Closed |
| Sun | Closed |
Parking
Patient parking available at the Ventura Blvd medical building.
Transit
On Ventura Blvd, minutes from US-101 (Reseda and Tampa Ave exits) and the Metro G Line (Orange).
Spine-focused orthopedic care in the West Valley.
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.
What we treat here.
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
On-site diagnostics
Most patients leave their first visit with imaging-confirmed answers and a clear treatment plan.
- On-site X-ray
- MRI scheduling within the week
- PT coordinated with your in-network provider
Care that fits your life
Same-day acute-injury slots, PPO-friendly billing, multilingual team, and workers' compensation experience.
- Same-day appointments
- In-network with major insurers
- Spanish-speaking team members
Specialists practicing at our Tarzana office.
Accepting new patients
Jose Antonio Acosta, MD
Pain Management & Rehabilitation
Speaks English and Spanish
Habla español
- Glendale
- Encino
- Valencia
- +1 more
Accepting new patients
Jazmin Bermudez, PA-C
Orthopedic Physician Assistant
- Glendale
- Encino
- Valencia
- +1 more
Patients from across the Tarzana area.
We see patients from across the Tarzana region. Our most common patient communities include:
- Tarzana
- Reseda
- Encino
- Woodland Hills
- Winnetka
- Northridge
- Canoga Park
- Sherman Oaks
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.
What patients say
“I broke both of my ankles. Dr Jayson was amazing and the staff is so friendly, compassionate and helpful. So glad I found them.”
Google reviewerGoogle reviewTarzanaApr 2026
“The office staff are very professional and kind. The back office and Dr. Acosta are the best. They made sure that I understood my procedure and made me comfortable throughout the process.”
Jewel J.Google reviewTarzanaMar 2026
“Excellent practice! From the moment we walked in we were greeted warmly. We were seen Within 15 minutes, which is very rare for a new patient visit.The provider, Jasmine did a great assessment and took the time to explain… Great bedside manner! The x-ray technicians were thorough and pleasant as well. This practice gets five stars highly recommended!”
Janette B.Google reviewTarzanaMar 2026
“I felt like Dr. Malafa really took the time to listen to me. Everyone in the office was friendly and efficient.”
Marissa J.Google reviewTarzanaFeb 2026
“The medical professionals were all very friendly and took the time to talk to me about my broken leg. The x ray tech Alex, in particular was so patient and caring walking me from the waiting room to the xray room in tons of pain.”
The T.Google reviewTarzanaMar 2026
“Clean facilities and front desk amicable and respectful.great experience with Doctor he answer my questions and go directly to my hand issue very responsive and knowledgeable about my issue”
Alfredo O.Google reviewTarzanaMar 2026
Selected 5-star reviews from Google, shown as written. Individual results vary.
LAOSS Tarzana: FAQ.
- Yes. We're located directly on Ventura Blvd, just minutes from the US-101 freeway via the Reseda Blvd and Tampa Avenue exits.
Book at our Tarzana office.
Same-day and next-day appointments available. Call us or book online; we'll route you to the right specialist.