Richard Nguyen, DDS
NPI 1659448116 · General Practice Dentistry · Westminster, CA
Richard Nguyen, DDS is a General Practice Dentistry provider in Westminster, CA (NPI 1659448116).
Provider details
- NPI number
- 1659448116
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
- License
- 52659 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Brimonidine Tartrate | 16 |
| Latanoprost | 15 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 14 |
| Timolol Maleate | 12 |
| Azelastine Hcl | 11 |
| Cyclosporinebrand: Restasis | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-29
- Last updated
- 2008-04-29
Frequently asked questions
- What is Richard Nguyen's NPI number?
- Richard Nguyen's National Provider Identifier (NPI) is 1659448116, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Nguyen's specialty?
- Richard Nguyen is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Richard Nguyen located?
- Richard Nguyen's practice location on file with NPPES is 9741 Bolsa Ave, Westminster, CA 92683-6683.
- What is Richard Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Richard Nguyen is (714) 775-8434.
- Is Richard Nguyen's NPI active?
- Yes — Richard Nguyen's NPI (1659448116) is active in the NPPES registry as of the last update on 2008-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.