Matthew SiljanderMD
Orthopedic Surgery·Newport Beach, CA
Matthew Siljander, MD is an Orthopedic Surgery provider in Newport Beach, CA affiliated with 2 ambulatory surgery centers in CA, as of July 2026.
- NPI1831509355
- Registered2014
- Centers2
- StateCA
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Matthew Siljander at a glance
- Provider
- Matthew Siljander
- Credential
- MD
- Specialty
- Orthopaedic Surgery
- Procedures
- Orthopedic Surgery CPT codes
- Location
- Newport Beach, CA
- NPI registered
- 2014
- NPI
- 1831509355
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Matthew Siljander practice?
Matthew Siljander, MD is based in Newport Beach, CA and is affiliated with 2 ambulatory surgery centers: Orthopedic Surgery Center Of Oc LLC in Newport Beach, CA and The Surgery Center Of Newport Coast LLC in Newport Beach, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Matthew Siljander's NPI number?
Matthew Siljander's National Provider Identifier (NPI) is 1831509355, registered in 2014. Specialty on record: Orthopaedic Surgery; credential MD.
How many Orthopedic Surgery providers in California work at ambulatory surgery centers?
538 Orthopedic Surgery surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Matthew Siljander among them. The California Orthopedic Surgery directory lists each one by city with credential, NPI, and center affiliations.
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