James Ong, M.D.
NPI 1912955980 · Specialist · Tarzana, CA
Enrolled with Medicare as Practitioner - Cardiac Electrophysiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Ong, M.D. is a Specialist provider in Tarzana, CA (NPI 1912955980).
Provider details
- NPI number
- 1912955980
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G70354 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
8,795 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Evaluation of Cardiac Rhythm Monitor System, Remote Up to 30 Days93298 | 1,495 | $79 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 1,243 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 841 | $205 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 809 | $147 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System Or Implantable Defibrillator System, Remote Up to 90 Days93296 | 539 | $26 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 367 | 94 |
| Sacubitril/Valsartanbrand: Entresto | 156 | 38 |
| Rivaroxabanbrand: Xarelto | 141 | 40 |
| Empagliflozinbrand: Jardiance | 119 | 32 |
| Metoprolol Tartrate | 115 | 34 |
| Amiodarone Hcl | 112 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,424 across 140 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-04
- Last updated
- 2012-08-24
Frequently asked questions
- What is James Ong's NPI number?
- James Ong's National Provider Identifier (NPI) is 1912955980, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Ong's specialty?
- James Ong is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is James Ong located?
- James Ong's practice location on file with NPPES is 18372 Clark St, Tarzana, CA 91356-3508.
- What is James Ong's phone number?
- The practice phone number listed in the NPPES registry for James Ong is (818) 342-5377.
- Does James Ong accept Medicare?
- James Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Ong's NPI active?
- Yes — James Ong's NPI (1912955980) is active in the NPPES registry as of the last update on 2012-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.