DR. ARIEL HSINTZU WU MD
NPI 1174100143
Emergency Medicine in Torrance, CA
About Dr. Ariel Hsintzu Wu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ARIEL HSINTZU WU MD (NPI 1174100143) is an individual emergency medicine provider in Torrance, California, licensed in California (A182710) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Ariel Hsintzu Wu Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Ariel Wu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Torrance, CA 90505
- Reassigned Medicare billing, California enrollment
- 49 clinicians in this Medicare group
Harbor City, CA 90710
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90505 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ariel Wu's NPI number?
The NPI number for Ariel Wu is 1174100143. It was assigned to this individual provider in the NPPES registry on March 25, 2021. The provider is also known as Dr. Ariel Hsintzu Yang MD.
Where is Ariel Wu located?
Ariel Wu practices at 3330 Lomita Blvd, Torrance, CA 90505. The listed phone number is (310) 325-9110.
What is Ariel Wu's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Ariel Wu enrolled in Medicare?
Yes. Ariel Wu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ariel Wu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ariel Wu reassigns Medicare benefits to 2 organizations: Torrance Emergency Physicians, Inc (Torrance, CA) and Southern California Permanente Medical Group (Harbor City, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ariel Wu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ariel Wu was last updated on April 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Ariel Hsintzu Wu, MD · NPI 1174100143
Emergency Medicine physician in Torrance, California. Individual provider, active in the CMS NPPES registry since March 25, 2021.
## Identity
- **NPI:** 1174100143 (Entity type: Individual)
- **Enumerated:** March 25, 2021
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A182710 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3330 LOMITA BLVD, Torrance, CA 90505-5002
- **Phone:** (310) 325-9110
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Torrance Emergency Physicians, Inc (NPI 1184048712, Torrance, CA); Southern California Permanente Medical Group (NPI 1598797011, Harbor City, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** April 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1174100143) · Data from the CMS NPPES public registry.