Katherine Wei, MD
Diagnostic Radiology Physician · Downey, CA
Katherine Wei, MD is a diagnostic radiology physician with a practice address in Downey, California, and NPI 1639707557, issued on Mar 27, 2020. Check the license (California A177555, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Katherine Wei
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A177555 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11411 Brookshire Ave Ste 101, Downey, CA 90241
- Phone
- (562) 869-9192
- Enumerated
- Mar 27, 2020
- Record last updated
- Nov 26, 2025
- Medicare enrollment
- Enrolled (PECOS I20260108003192); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 11411 Brookshire Ave Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Penny Johnson, MDDiagnostic Radiology Physician1497942106
Verify Katherine Wei in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A177555Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 3 group practices
- Lambert Radiology Medical Group IncIrvine, CA
- UC RegentsOrange, CA
- United Medical Imaging Healthcare IncDowney, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Wei among 4,500 diagnostic radiology physician records in California
Katherine Wei, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 94% of them.
- NPI issued2020 · 94% of these records are older, 3% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2020 · median 2004 among the 3,130 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Downey → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Ivan Barrett, M.D.Downey, CA 902411073571113
- Mark Dubin, M.D.Downey, CA 902411700843240
- Ali Goodarzi, M.D.Downey, CA 902411881737021
- Michael Hoffman, M.D.Downey, CA 902411497713838
- Penny Johnson, MDDowney, CA 902411497942106
- Julie Sun, M.D.Downey, CA 902411629036819
- David WohlmuthDowney, CA 902411427016625
- Joel Levine, M.D.Downey, CA 902401881655769
Common questions
What is Katherine Wei, MD's NPI number?
Katherine Wei, MD's National Provider Identifier (NPI) is 1639707557, issued on Mar 27, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Wei, MD located?
The NPPES record lists a practice address at 11411 Brookshire Ave Ste 101, Downey, CA, 90241. Phone: (562) 869-9192. Providers update this record themselves, so call before visiting.
How can I verify Katherine Wei, MD's license?
NPPES lists California license number A177555, 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.
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.