Matthew Siow, MD, MBA
NPI 1467948307 · Orthopaedic Surgery Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Siow, MD, MBA is a Orthopaedic Surgery Physician provider in Los Angeles, CA (NPI 1467948307).
Provider details
- NPI number
- 1467948307
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MBA
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$26,517 across 44 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 200 W Arbor DrSan Diego, CA 92103-9000Phone: (619) 543-6222
Registry dates
- Enumerated
- 2018-07-03
- Last updated
- 2024-07-22
- Certified
- 2024-07-22
Frequently asked questions
- What is Matthew Siow's NPI number?
- Matthew Siow's National Provider Identifier (NPI) is 1467948307, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Siow's specialty?
- Matthew Siow is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Siow located?
- Matthew Siow's practice location on file with NPPES is 6801 Park Ter # 140400, Los Angeles, CA 90045-1543.
- What is Matthew Siow's phone number?
- The practice phone number listed in the NPPES registry for Matthew Siow is (310) 665-7200.
- Does Matthew Siow accept Medicare?
- Matthew Siow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Siow's NPI active?
- Yes — Matthew Siow's NPI (1467948307) is active in the NPPES registry as of the last update on 2024-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.