James Jang, MD
NPI 1679651152 · Cardiovascular Disease Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Jang, MD is a Cardiovascular Disease Physician provider in San Jose, CA (NPI 1679651152).
Provider details
- NPI number
- 1679651152
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A73174 (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
19 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
23 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 23 | $9 |
Typical Medicare-allowed amounts for these services range $9–$9 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carvedilol | 44 | 13 |
| Atorvastatin Calcium | 42 | 15 |
| Flecainide Acetate | 33 | 13 |
| Isosorbide Mononitratebrand: Isosorbide Mononitrate Er | 33 | 11 |
| Metoprolol Tartrate | 31 | 12 |
| Sacubitril/Valsartanbrand: Entresto | 24 | — |
| Empagliflozinbrand: Jardiance |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-13
Frequently asked questions
- What is James Jang's NPI number?
- James Jang's National Provider Identifier (NPI) is 1679651152, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Jang's specialty?
- James Jang is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is James Jang located?
- James Jang's practice location on file with NPPES is 260 International Cir, San Jose, CA 95119-1130.
- What is James Jang's phone number?
- The practice phone number listed in the NPPES registry for James Jang is (408) 972-7000.
- Does James Jang accept Medicare?
- James Jang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Jang's NPI active?
- Yes — James Jang's NPI (1679651152) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.