Leonard Ong, M.D.
NPI 1376854281 · Diagnostic Radiology Physician · Santa Monica, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Ong, M.D. is a Diagnostic Radiology Physician provider in Santa Monica, CA (NPI 1376854281).
Provider details
- NPI number
- 1376854281
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2023-02351 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,989 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 474 | $112 |
| X-Ray of Chest, 1 View71045 | 313 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 311 | $40 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 207 | $87 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 154 | $86 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 116 | $83 |
Practice location
Mailing address
Additional practice locations (3)
- 200 W Arbor DrSan Diego, CA 92103-9000Phone: (800) 926-8273
- 3815 Highland AveDowners Grove, IL 60515-1500Phone: (708) 304-9400Fax: (630) 275-5890
- 2460 Curtis Ellis DrRocky Mount, NC 27804-2237Phone: (252) 962-8186Fax: (252) 962-3563
Registry dates
- Enumerated
- 2010-06-24
- Last updated
- 2026-03-25
- Certified
- 2026-03-25
Frequently asked questions
- What is Leonard Ong's NPI number?
- Leonard Ong's National Provider Identifier (NPI) is 1376854281, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Ong's specialty?
- Leonard Ong is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Ong located?
- Leonard Ong's practice location on file with NPPES is 2428 Santa Monica Blvd, Santa Monica, CA 90404-2045.
- What is Leonard Ong's phone number?
- The practice phone number listed in the NPPES registry for Leonard Ong is (310) 315-1000.
- Does Leonard Ong accept Medicare?
- Leonard Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Ong's NPI active?
- Yes — Leonard Ong's NPI (1376854281) is active in the NPPES registry as of the last update on 2026-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.