Winston Wei Lien, MD
Radiation Oncology Physician · Los Angeles, CA
Winston Wei Lien, MD is a radiation oncology physician with a practice address in Los Angeles, California, and NPI 1255490991, issued on Dec 8, 2006. Check the license (California A95489, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Winston Wei Lien
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A95489 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4950 W Sunset Blvd, Los Angeles, CA 90027
- Phone
- (323) 783-2841
- Enumerated
- Dec 8, 2006
- Record last updated
- Dec 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080509000421); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 4950 W Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lisa Avalos, M.D.Family Medicine Physician1669622361
- Brenda Bahk, M.D.Family Medicine Physician1073871950
- Jenny Banh, MDInternal Medicine Physician1083984827
- Elaine Beals, PHARM DPharmacist1336238567
Verify Winston Wei Lien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A95489Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% more Medicare Part D claims than the average radiation oncology physician in 2024
212 Medicare Part D claims for 83 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 48 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen23 claims
- Tamsulosin Hcl20 claims
- Oxycodone-Acetaminophen18 claims
- Gabapentin15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $307.05
3 payments; by number, the most common kind was food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Winston Wei Lien among 735 radiation oncology physician records in California
Winston Wei Lien, MD is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2004 · median 2005 among the 545 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Los Angeles → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Edward Brunngraber, MDLos Angeles, CA 900271891866877
- Harry Cosmatos, MDLos Angeles, CA 900271902977978
- Michael Girvigian, MDLos Angeles, CA 900271215008289
- Barry Goy, MDLos Angeles, CA 900271609947688
- Kevin Holland, MDLos Angeles, CA 900271184796419
- Julie Hwang, MDLos Angeles, CA 900271396804993
- Teri Katz, MDLos Angeles, CA 900271639246457
- Kenneth Lodin, MDLos Angeles, CA 900271306913314
Common questions
What is Winston Wei Lien, MD's NPI number?
Winston Wei Lien, MD's National Provider Identifier (NPI) is 1255490991, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Winston Wei Lien, MD located?
The NPPES record lists a practice address at 4950 W Sunset Blvd, Los Angeles, CA, 90027. Phone: (323) 783-2841. Providers update this record themselves, so call before visiting.
How can I verify Winston Wei Lien, MD's license?
NPPES lists California license number A95489, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Winston Wei Lien, MD prescribe under Medicare Part D?
In 2024, Winston Wei Lien, MD had 212 Medicare Part D claims for 83 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.