Quick answers
- Which hospitals does David M. Truong work at?
- Medicare's official clinician data lists David M. Truong at 1 hospital: UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David M. Truong see patients?
- Medicare's clinician data lists 1 practice location in Fountain Valley, CA. Call before your visit to confirm the address.
- What is David M. Truong's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Gastroenterology.
- Does David M. Truong accept Medicare assignment?
- Yes. Medicare's clinician data says David M. Truong accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for David M. Truong?
- (714) 274-9969, as listed in official Medicare / NPI Registry data.
- What is David M. Truong's NPI number?
- 1528090818. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David M. Truong works
Medicare's Facility Affiliation Data lists David M. Truong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where David M. Truong is enrolled with Medicare (CMS data updated 2026-10-02).
- 10900 Warner Ave, Suite 201Fountain Valley, CA 92708 (714) 274‑9969
Specialties
- Internal Medicineprimary
- Gastroenterologyalso
Other internal medicine doctors in Fountain Valley
Clinicians with the same Medicare primary specialty in Fountain Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528090818 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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