MS. STEPHANIE Y CHEN N.P., M.S.N.
NPI 1578729398
General Acute Care Hospital in Los Angeles, CA
About Ms. Stephanie Y Chen N.p., M.s.n. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. STEPHANIE Y CHEN N.P., M.S.N. (NPI 1578729398) is an individual general acute care hospital provider in Los Angeles, California, licensed in California (18484) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2008).
NPPES Registry Identity
Specialties & Licenses
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
Ms. Stephanie Y Chen N.p., M.s.n. 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 Stephanie Chen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 clinicians in this Medicare group
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 1,001 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.
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.
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.
LOS ANGELES, CA 90048
LOS ANGELES, CA 90048
LOS ANGELES, CA 90048
LOS ANGELES, CA 90048
LOS ANGELES, CA 90048
LOS ANGELES, CA 90048
LOS ANGELES, CA 90048
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 Stephanie Chen's NPI number?
The NPI number for Stephanie Chen is 1578729398. It was assigned to this individual provider in the NPPES registry on July 31, 2008.
Where is Stephanie Chen located?
Stephanie Chen practices at 444 S San Vicente Blvd Suite 603, Los Angeles, CA 90048. The listed phone number is (626) 780-1377.
What is Stephanie Chen's specialty?
The primary specialty registered for this NPI is General Acute Care Hospital with taxonomy code 282N00000X.
Is Stephanie Chen enrolled in Medicare?
Yes. Stephanie Chen 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 Stephanie Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Chen reassigns Medicare benefits to 2 organizations: Cedars-Sinai Medical Care Foundation (Los Angeles, CA) and Cedars-Sinai Medical Center (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 Stephanie Chen'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 Stephanie Chen was last updated on April 28, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years 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.
# Ms. Stephanie Y Chen, N.P., M.S.N. · NPI 1578729398
General Acute Care Hospital provider in Los Angeles, California. Individual provider, active in the CMS NPPES registry since July 31, 2008.
## Identity
- **NPI:** 1578729398 (Entity type: Individual)
- **Enumerated:** July 31, 2008
- **Primary specialty:** General Acute Care Hospital · taxonomy 282N00000X
- **State license:** 18484 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 444 S SAN VICENTE BLVD, SUITE 603, Los Angeles, CA 90048-4165
- **Phone:** (626) 780-1377
## 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): Cedars-Sinai Medical Care Foundation (NPI 1043826720, Los Angeles, CA); Cedars-Sinai Medical Center (NPI 1639172372, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2008
## Record status
- **NPPES last updated:** April 28, 2009
---
Source: [NPI Profile](https://npiprofile.com/npi/1578729398) · Data from the CMS NPPES public registry.