William Quan, D.D.S.
NPI 1942410030 · General Practice Dentistry · El Centro, CA
William Quan, D.D.S. is a General Practice Dentistry provider in El Centro, CA (NPI 1942410030).
Provider details
- NPI number
- 1942410030
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- D.D.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 21190 (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 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 26 | 21 |
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
- 2007-05-23
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Quan's NPI number?
- William Quan's National Provider Identifier (NPI) is 1942410030, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Quan's specialty?
- William Quan is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is William Quan located?
- William Quan's practice location on file with NPPES is 480 W Olive Ave Ste 5, El Centro, CA 92243-3045.
- What is William Quan's phone number?
- The practice phone number listed in the NPPES registry for William Quan is (760) 352-7011.
- Is William Quan's NPI active?
- Yes — William Quan's NPI (1942410030) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.