Dr. Nguyen & Associates
NPI 1497951552 · Allergy & Immunology Physician · Downey, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dr. Nguyen & Associates is a Allergy & Immunology Physician organization in Downey, CA (NPI 1497951552).
Provider details
- NPI number
- 1497951552
- Entity type
- Organization
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Roger Nguyen, Owner(562) 682-9826
- License
- C24547 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
Other names (DBA / former)
- Other name
- Dr. Nguyen & Associates
Registry dates
- Enumerated
- 2007-06-26
- Last updated
- 2023-09-12
- Certified
- 2023-09-12
Frequently asked questions
- What is Dr. Nguyen & Associates's NPI number?
- Dr. Nguyen & Associates's National Provider Identifier (NPI) is 1497951552, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Dr. Nguyen & Associates?
- Dr. Nguyen & Associates is classified in the NPPES registry as Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Dr. Nguyen & Associates located?
- Dr. Nguyen & Associates's practice location on file with NPPES is 8301 Florence Ave Ste 104, Downey, CA 90240-3946.
- What is Dr. Nguyen & Associates's phone number?
- The practice phone number listed in the NPPES registry for Dr. Nguyen & Associates is (562) 862-1991.
- Does Dr. Nguyen & Associates accept Medicare?
- Dr. Nguyen & Associates is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Dr. Nguyen & Associates?
- The authorized official listed on Dr. Nguyen & Associates's NPPES record is Roger Nguyen, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Dr. Nguyen & Associates's NPI active?
- Yes — Dr. Nguyen & Associates's NPI (1497951552) is active in the NPPES registry as of the last update on 2023-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.