Truong-Sinh Leduc, M.D.
NPI 1457430886 · Internal Medicine Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Truong-Sinh Leduc, M.D. is a Internal Medicine Physician provider in Fountain Valley, CA (NPI 1457430886).
Provider details
- NPI number
- 1457430886
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G56656 (CA)
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 tenure25% of score
19 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
1,020 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 607 | $138 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 203 | $179 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 64 | $129 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 51 | $206 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 32 | $260 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tenofovir Alafenamidebrand: Vemlidy | 714 | 74 |
| Famotidine | 290 | 105 |
| Baclofen | 162 | 69 |
| Entecavir | 150 | 22 |
| Tenofovir Disoproxil Fumarate | 89 | 15 |
| Omeprazole | 75 | 27 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 65 | 65 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$24,579 across 30 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
- 2006-11-05
- Last updated
- 2012-03-14
Frequently asked questions
- What is Truong-Sinh Leduc's NPI number?
- Truong-Sinh Leduc's National Provider Identifier (NPI) is 1457430886, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Truong-Sinh Leduc's specialty?
- Truong-Sinh Leduc is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Truong-Sinh Leduc located?
- Truong-Sinh Leduc's practice location on file with NPPES is 11160 Warner Ave, Fountain Valley, CA 92708-4010.
- What is Truong-Sinh Leduc's phone number?
- The practice phone number listed in the NPPES registry for Truong-Sinh Leduc is (714) 540-0105.
- Does Truong-Sinh Leduc accept Medicare?
- Truong-Sinh Leduc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Truong-Sinh Leduc's NPI active?
- Yes — Truong-Sinh Leduc's NPI (1457430886) is active in the NPPES registry as of the last update on 2012-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.