Quick answers
- Does Truong-Sinh Leduc accept Medicare assignment?
- Yes. Medicare's clinician data says Truong-Sinh Leduc accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Truong-Sinh Leduc see?
- In 2024, CMS data shows 519 Original Medicare patients and 1,044 services for Truong-Sinh Leduc. This counts Original Medicare only and measures volume, not quality.
- What is Truong-Sinh Leduc's NPI number?
- 1457430886. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Truong-Sinh Leduc, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 519 |
|---|---|
| Services billed to Medicare | 1,044 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)607 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)203 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)64 services
- Biopsy of large bowel using a flexible endoscope (45380)51 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)32 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes48%
- Chronic kidney disease37%
- Osteoporosis32%
Practice locations
Addresses where Truong-Sinh Leduc is enrolled with Medicare (CMS data updated October 2, 2026).
- 10900 Warner Ave, Suite 122Fountain Valley, CA 92708 (714) 540‑0105
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Fountain Valley
Clinicians with the same Medicare primary specialty in Fountain Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 1983 (43 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457430886 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians