John Truong, M.D.
NPI 1972894707 · Internal Medicine Physician · Santa Clara, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Truong, M.D. is a Internal Medicine Physician provider in Santa Clara, CA (NPI 1972894707).
Provider details
- NPI number
- 1972894707
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 188 | 72 |
| Lisinopril | 111 | 40 |
| Amlodipine Besylate | 99 | 38 |
| Losartan Potassium | 90 | 38 |
| Tamsulosin Hcl | 83 | 29 |
| Fluticasone Propionate | 71 | 26 |
| Simvastatin | 62 | 22 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-04-27
- Last updated
- 2021-12-15
Frequently asked questions
- What is John Truong's NPI number?
- John Truong's National Provider Identifier (NPI) is 1972894707, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Truong's specialty?
- John Truong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Truong located?
- John Truong's practice location on file with NPPES is 2734 El Camino Real, Santa Clara, CA 95051-3007.
- What is John Truong's phone number?
- The practice phone number listed in the NPPES registry for John Truong is (408) 241-3801.
- Does John Truong accept Medicare?
- John Truong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Truong's NPI active?
- Yes — John Truong's NPI (1972894707) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.