Johnathan Chen, M.D.
Diagnostic Radiology Physician · Los Angeles, CA
Johnathan Chen, M.D. is a diagnostic radiology physician with a practice address in Los Angeles, California, and NPI 1669798443, issued on Apr 19, 2010. Check the license (California A113844, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Johnathan Chen
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A113844 CA
Self-reported in NPPES; status is on the state search - Practice location
- 757 Westwood Plz Ste 1633, Los Angeles, CA 90095
- Phone
- (310) 301-6800
- Enumerated
- Apr 19, 2010
- Record last updated
- Dec 10, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (310) 794-9035
- Medicare enrollment
- Enrolled (PECOS I20160404000908); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 757 Westwood Plz Ste 1633
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Johnathan Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A113844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 75.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Martin Luther King JR Community Medical FoundationCompton, CA
- Ucla Radiology Medical GroupSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johnathan Chen among 4,500 diagnostic radiology physician records in California
Johnathan Chen, M.D. 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 2010, is newer than 67% of them.
- NPI issued2010 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2009 · median 2004 among the 3,130 with a school on file
- Record last updated2019 · 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 Los Angeles → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Denise Aberle, MDLos Angeles, CA 900951053361501
- Azita Behrashi, MDLos Angeles, CA 900951285688010
- Maria Boechat, MDLos Angeles, CA 900951659320406
- Livia Bohman, MDLos Angeles, CA 900951912956756
- Deborah Bolton, NPLos Angeles, CA 900951033166392
- Nanette Debruhl, MDLos Angeles, CA 900951689625170
- Michael Fischer, M.D.Los Angeles, CA 900951740239060
- Richard Gold, MDLos Angeles, CA 900951588614655
Common questions
What is Johnathan Chen, M.D.'s NPI number?
Johnathan Chen, M.D.'s National Provider Identifier (NPI) is 1669798443, issued on Apr 19, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Johnathan Chen, M.D. located?
The NPPES record lists a practice address at 757 Westwood Plz Ste 1633, Los Angeles, CA, 90095. Phone: (310) 301-6800. Providers update this record themselves, so call before visiting.
How can I verify Johnathan Chen, M.D.'s license?
NPPES lists California license number A113844, 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.
What is Johnathan Chen, M.D.'s MIPS final score?
The 2023 MIPS final score is 75.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.