STEVEN J HSU M.D.
NPI 1144547696
Physical Medicine & Rehabilitation in Pasadena, CA
About Steven J Hsu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN J HSU M.D. (NPI 1144547696) is an individual physical medicine & rehabilitation provider in Pasadena, California, licensed in California (A120101) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University (2010).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Steven J Hsu M.d. 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 Steven Hsu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 204 clinicians in this Medicare group
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
PASADENA, CA 91105
PASADENA, CA 91105
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 Steven Hsu's NPI number?
The NPI number for Steven Hsu is 1144547696. It was assigned to this individual provider in the NPPES registry on April 23, 2010.
Where is Steven Hsu located?
Steven Hsu practices at 100 W California Blvd, Pasadena, CA 91105. The listed phone number is (626) 352-1444.
What is Steven Hsu's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Steven Hsu enrolled in Medicare?
Yes. Steven Hsu 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 Steven Hsu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Hsu reassigns Medicare benefits to 2 organizations: The Huntington Medical Foundation (Pasadena, CA) and Cedars-Sinai Medical Care Foundation (Los Angeles, 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 Steven Hsu'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 Steven Hsu was last updated on July 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.