Leonard Tsung-Wei Ong, M.D.

Diagnostic Radiology (CMS) · Santa Monica, CA

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At a glance

2428 Santa Monica Blvd, Santa Monica, CA 90404-2045

NPPES record updated Sep 10, 2026. Public records can lag behind changes at a practice.

Before you call: a quick checklist

Are you accepting new patients?
Do you accept my specific insurance plan?
Do you provide the service I need at this address?
Do I need a referral, and what is the earliest appointment?

Insurance participation and appointment availability are not established by these public records.

Medicare & insurance

Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.

How to check your coverage

Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.

Check the official Medicare directory ↗

Practice location

2428 Santa Monica Blvd
Santa Monica, CA 90404-2045

Additional reported practice locations

1500 Duarte Rd
Duarte, CA 910103012
Phone: 8008264673

3815 Highland Ave
Downers Grove, IL 605151500
Phone: 7083049400
Fax: 6302755890

2460 Curtis Ellis Dr
Rocky Mount, NC 278042237
Phone: 2529628186
Fax: 2529623563

200 W Arbor Dr
San Diego, CA 921039000
Phone: 8009268273

REPORTED BACKGROUND

Education & affiliations

Medical / professional school: Not reported in this file
Graduation year: 2010
CMS specialties: Diagnostic Radiology

Practice groups

Reported hospital affiliations

Enloe Health Chico, CA
Marietta Memorial Hospital Marietta, OH
Novant Health Forsyth Medical Center Winston-Salem, NC
Novant Health Thomasville Medical Center Thomasville, NC
Unc Health Nash Rocky Mount, NC

Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.

Source: CMS National Downloadable File · Published Oct 15, 2026.

Source: CMS Facility Affiliation Data · Published Oct 15, 2026.

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PUBLISHED MEDICARE ACTIVITY

Procedures in the public data

Reported activity can help you ask more informed questions about a practice’s services.

No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.

CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology

Source: CMS Utilization Data · Published Oct 15, 2026.

Find providers with a similar service mix

Compare 2024 published Medicare activity in the same reported specialty, here or in another city.

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PAYMENT TRANSPARENCY

Industry-reported general payments

No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.

Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.

Professional details: NPI, taxonomy & registry record

NPI1376854281

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Registry details

Primary taxonomy: Diagnostic Radiology (CMS)
Taxonomy code: 2085R0202X
Enumeration date: Jun 24, 2010
Record updated: Sep 10, 2026

More registry details

Provider type: Individual · Type 1
Reported credentials: M.D.