WINSTON WEI LIEN MD
NPI 1255490991
Radiology - Radiation Oncology in Los Angeles, CA
About Winston Wei Lien Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WINSTON WEI LIEN MD (NPI 1255490991) is an individual radiation oncology provider in Los Angeles, California, licensed in California (A95489) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (2004).
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
Winston Wei Lien 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 Reassignment
Medicare enrollment records show Winston Lien reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1396287082 (California)
- 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 90027 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.
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
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 Winston Lien's NPI number?
The NPI number for Winston Lien is 1255490991. It was assigned to this individual provider in the NPPES registry on December 8, 2006.
Where is Winston Lien located?
Winston Lien practices at 4950 W Sunset Blvd Station 2B, Los Angeles, CA 90027. The listed phone number is (323) 783-2841.
What is Winston Lien's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Winston Lien enrolled in Medicare?
Yes. Winston Lien 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 organization bills Medicare for Winston Lien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Winston Lien reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, CA). The 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 Winston Lien'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 Winston Lien was last updated on December 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Winston Wei Lien, MD · NPI 1255490991
Radiation Oncology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since December 8, 2006.
## Identity
- **NPI:** 1255490991 (Entity type: Individual)
- **Enumerated:** December 8, 2006
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** A95489 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4950 W SUNSET BLVD, STATION 2B, Los Angeles, CA 90027-5822
- **Phone:** (323) 783-2841
## 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:** Southern California Permanente Medical Group (NPI 1134151657, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 2004
## Record status
- **NPPES last updated:** December 21, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1255490991) · Data from the CMS NPPES public registry.