Louis Nguyen
NPI 1528646544 · Emergency Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Nguyen is a Emergency Medicine Physician provider in Los Angeles, CA (NPI 1528646544).
Provider details
- NPI number
- 1528646544
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A197655 (CA)
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
5 yrs in NPPES registry
- Profile completeness38% of score
100% 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-31
- Last updated
- 2025-02-21
- Certified
- 2025-02-21
Frequently asked questions
- What is Louis Nguyen's NPI number?
- Louis Nguyen's National Provider Identifier (NPI) is 1528646544, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Nguyen's specialty?
- Louis Nguyen is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Nguyen located?
- Louis Nguyen's practice location on file with NPPES is 1200 N State St Ste A7d, Los Angeles, CA 90089-1001.
- What is Louis Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Louis Nguyen is (323) 409-7053.
- Does Louis Nguyen accept Medicare?
- Louis Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Nguyen's NPI active?
- Yes — Louis Nguyen's NPI (1528646544) is active in the NPPES registry as of the last update on 2025-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.