Quick answers
- Which hospitals does Dat Q. Nguyen work at?
- Medicare's official clinician data lists Dat Q. Nguyen at 4 hospitals: Garden Grove Hospital & Medical Center, Huntington Beach Hospital, Memorialcare Orange Coast Medical Center and UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Dat Q. Nguyen see patients?
- Medicare's clinician data lists 3 practice locations, including Westminster, CA, Garden Grove, CA and Fountain Valley, CA. Call before your visit to confirm the address.
- What is Dat Q. Nguyen's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Dat Q. Nguyen accept Medicare assignment?
- Yes. Medicare's clinician data says Dat Q. Nguyen 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.
- Does Dat Q. Nguyen offer telehealth?
- Medicare's clinician data says Dat Q. Nguyen offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Dat Q. Nguyen?
- (714) 531-2091, as listed in official Medicare / NPI Registry data.
- What is Dat Q. Nguyen's NPI number?
- 1720092315. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Dat Q. Nguyen works
Medicare's Facility Affiliation Data lists Dat Q. Nguyen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Garden Grove Hospital & Medical CenterGarden Grove, CA · Acute Care Hospital · CCN 050230
- Huntington Beach HospitalHuntington Beach, CA · Acute Care Hospital · CCN 050526
- Memorialcare Orange Coast Medical CenterFountain Valley, CA · Acute Care Hospital · CCN 050678
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where Dat Q. Nguyen is enrolled with Medicare (CMS data updated 2026-10-02).
- 10362 Bolsa Ave, Suite 110Westminster, CA 92683 (714) 531‑2091
- 12865 Main St, Suite 105Garden Grove, CA 92840 (800) 560‑9999
- 17100 Euclid StFountain Valley, CA 92708 (818) 618‑6850
Group practices
Medicare enrollment lists Dat Q. Nguyen as a member of these groups (CMS data updated 2026-10-02).
- Bolsa Medical Group14 clinicians in the group
- Ted Medical Group Inc2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Westminster
Clinicians with the same Medicare primary specialty in Westminster, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Icahn School Of Medicine At Mount Sinai |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1720092315 |
| 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