Meet our care
team.
Seventeen orthopedic surgeons, four podiatrists, seventeen nurse practitioners and physician assistants, and a chiropractor — coordinated across eight Los Angeles–area offices. Subspecialty care from knee and hip to spine, hand, foot, sports medicine, pain management, and pediatric orthopedics.

Live · Now Accepting
39 specialists. One coordinated team.
Subspecialty care across every joint, bone, and musculoskeletal condition we treat.
39
Total providers
Key takeaways
- 17 orthopedic surgeons + 4 podiatrists + 17 nurse practitioners and PAs + 1 chiropractor.
- Founded in 2007 by Dr. Kevin Pelton — now serving Greater Los Angeles across eight offices.
- Subspecialty care across knee, hip, shoulder, spine, hand, foot, sports medicine, pain management, and pediatric.
- All physicians board-certified; surgical team fellowship-trained in their subspecialty.
Common questions
FAQ.
- Browse providers by specialty above, or call (323) 264-7600 and our team will route you to the right specialist based on your symptoms and history.
- No — each provider sees patients at a subset of offices. Each provider's profile lists their clinical locations.
- Yes — every LAOSS provider is currently accepting new patients. Call (323) 264-7600 to book.
- Many LAOSS providers and staff are bilingual (Spanish primarily). Let our front desk know your preference when you call to schedule.
Orthopedic Providers
Board-certified orthopedic surgeons.

01
Kevin Pelton, MD
Orthopedic Surgery · Founder
→
02
Matthew Longacre, MD
Orthopedic Surgeon
→
03
Brent Pickrell, MD
Hand & Wrist Surgeon
→
04
Daniel Acevedo, MD
Shoulder & Elbow Specialist
→
05
David Barba, MD
Orthopedic Surgeon
→
06
Erik Dworsky, MD
Hip and Knee Specialist · East LA
→
07
Hayk Stepanyan, MD
Orthopedic Sports Medicine
→
08
Jason Kaushik, MD
Pain Management & Rehabilitation Specialist
→
09
Jayson Lian, MD
Orthopedic Sports Medicine
→
10
Jose Antonio Acosta, MD
Pain Management Specialist · Compassionate Care
→
11
Leah Cyran, MD
Orthopedic Sports Medicine
→
12
Menyoli Malafa, MD
Hand & Wrist Surgeon
→
13
Michael Perrone, MD
Foot & Ankle and Sports Medicine Orthopedic Specialist
→
14
Michelle Sugi, MD
Pediatric Orthopedic Surgeon
→
15
Raj Desai, MD
Pain Management & Rehabilitation Specialist
→
16
Sevag Bastian, MD
Shoulder, Elbow & Sports Medicine Orthopedic Surgeon
→
17
Siamak Yasmeh, MD
Orthopedic Spine Surgeon
→Podiatrists
Foot & ankle specialists.
Nurse Practitioners & Physician Associates
Skilled clinical support.

01
Annie Yang, PA-C
Orthopedic Physician Assistant
→
02
Anthony Limon, PA-C
Orthopedic Physician Assistant
→
03
Daniel Rivas-Tejeda, PA-C
Orthopedic Physician Assistant
→
04
David Moriel, NP
Orthopedic Nurse Practitioner
→
05
Elizabeth Lee, PA-C
Hand & Wrist Physician Assistant
→
06
Felipe Nunez, PA-C
Orthopedic Physician Assistant
→
07
Jazmin Bermudez, PA-C
Orthopedic Physician Assistant
→
08
Jenny Kim, PA-C
Orthopedic Physician Assistant
→
09
John Giannini, PA-C
Orthopedic Physician Assistant
→
10
Jonathan Naick, PA-C
Orthopedic Physician Assistant
→
11
Mark Lee, PA-C
Orthopedic Physician Assistant
→
12
Matthew Lee, PA-C
Orthopedic Physician Assistant
→
13
Natalie Hammond, PA-C
Orthopedic Physician Assistant
→
14
Nora Nazarian, PA-C
Orthopedic Physician Assistant
→
15
Orlando Campos, PA-C
Orthopedic Physician Assistant
→
16
Sydney Chung, PA-C
Orthopedic Physician Assistant
→
17
Timothy Acheson, PA-C
Orthopedic Physician Assistant
→
18
Whitty Lee, PA-C
Hand & Wrist Physician Assistant
→Chiropractic Care Specialists
Manual therapy & spinal alignment.
Ready to be seen
Find your specialist.
Browse provider profiles to see specialty, locations, and bio. Same-day appointments available at most LAOSS offices.
Booking now
21 specialists · 8 offices
Greater Los Angeles
On-site X-raySame visit
Most insurers acceptedIn-network





