Charlton Ong, MD
NPI 1902302318 · Diagnostic Radiology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charlton Ong, MD is a Diagnostic Radiology Physician provider in Los Angeles, CA (NPI 1902302318).
Provider details
- NPI number
- 1902302318
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A165489 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,145 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 598 | $9 |
| Screening 3d Breast Mammography77063 | 270 | $29 |
| Screening Mammography77067 | 270 | $37 |
| Ct Scan Head Or Brain Without Contrast70450 | 118 | $40 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 109 | $29 |
| Diagnostic Mammography of 1 Breast77065 | 77 | $40 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-04
- Last updated
- 2024-04-30
- Certified
- 2023-05-19
Frequently asked questions
- What is Charlton Ong's NPI number?
- Charlton Ong's National Provider Identifier (NPI) is 1902302318, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charlton Ong's specialty?
- Charlton Ong is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Charlton Ong located?
- Charlton Ong's practice location on file with NPPES is 1983 Marengo St, Los Angeles, CA 90033.
- What is Charlton Ong's phone number?
- The practice phone number listed in the NPPES registry for Charlton Ong is (323) 409-7677.
- Does Charlton Ong accept Medicare?
- Charlton Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charlton Ong's NPI active?
- Yes — Charlton Ong's NPI (1902302318) is active in the NPPES registry as of the last update on 2024-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.