Leonard Tsung-Wei Ong, M.D.
Diagnostic Radiology Physician · Santa Monica, CA
Leonard Tsung-Wei Ong, M.D. is a diagnostic radiology physician with a practice address in Santa Monica, California, and NPI 1376854281, issued on Jun 24, 2010. Check the license (California A122632, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Leonard Tsung-Wei Ong
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- A122632 CA
271674 NY
036.178907 IL
2023-02351 NC
Self-reported in NPPES; status is on the state search - Practice location
- 2428 Santa Monica Blvd, Santa Monica, CA 90404
- Phone
- (310) 315-1000
- Enumerated
- Jun 24, 2010
- Record last updated
- Mar 25, 2026
- Medicare enrollment
- Enrolled (PECOS I20190730004158); 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 2428 Santa Monica Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dalia Artal, M.D.Diagnostic Radiology Physician1235465964
- Khadija Aziz, M.DDiagnostic Radiology Physician1336186097
- James Baharvar, MDInternal Medicine Physician1265537906
- Jack Berman, MDDiagnostic Radiology Physician1417977786
- Timothy Carmody, M. D.Diagnostic Radiology Physician1598751893
Verify Leonard Tsung-Wei Ong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A122632Check 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): 92.6 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 7 group practices
- Advocate Health And Hospitals CorporationDowners Grove, IL
- Dignity Health Medical FoundationRoseville, CA
- Enloe Medical CenterChico, CA
- Queens University Medical GroupRoseville, CA
- Riverside Radiology And Interventional Associates IncRoseville, CA
- Triad Radiology Associates PLLCRoseville, CA
- Unc Physicians Network LLCRocky Mount, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leonard Tsung-Wei Ong among 4,500 diagnostic radiology physician records in California
Leonard Tsung-Wei Ong, 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
- Graduated2010 · median 2004 among the 3,130 with a school on file
- Record last updated2026 · 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 Santa Monica → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Khadija Aziz, M.DSanta Monica, CA 904041336186097
- Jack Berman, MDSanta Monica, CA 904041417977786
- Timothy Carmody, M. D.Santa Monica, CA 904041598751893
- Francis Crnkovich, MDSanta Monica, CA 904041871515734
- Alex Freitas, M.D.Santa Monica, CA 904041326004284
- Curtis Hammerman, MDSanta Monica, CA 904041578591319
- Anne Hoyt, MDSanta Monica, CA 904041740230291
- Earl Landau, M.D.Santa Monica, CA 904041295787984
Common questions
What is Leonard Tsung-Wei Ong, M.D.'s NPI number?
Leonard Tsung-Wei Ong, M.D.'s National Provider Identifier (NPI) is 1376854281, issued on Jun 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Leonard Tsung-Wei Ong, M.D. located?
The NPPES record lists a practice address at 2428 Santa Monica Blvd, Santa Monica, CA, 90404. Phone: (310) 315-1000. Providers update this record themselves, so call before visiting.
How can I verify Leonard Tsung-Wei Ong, M.D.'s license?
NPPES lists California license number A122632, 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 Leonard Tsung-Wei Ong, M.D.'s MIPS final score?
The 2023 MIPS final score is 92.6 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.