IndividualActive
William Lyon, R.D.O. R.C.L.D.
NPI 1548456585 · Contact Lens Fitter · Santa Ana, CA
William Lyon, R.D.O. R.C.L.D. is a Contact Lens Fitter provider in Santa Ana, CA (NPI 1548456585).
Provider details
- NPI number
- 1548456585
- Entity type
- Individual
- Primary specialty
- Contact Lens FitterEye and Vision Services Providers
- Credential
- R.D.O. R.C.L.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- CL301 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
Detailed profile(88/100 index)
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
3000 W Macarthur Blvd Ste 413
Santa Ana, CA 92704-6941
Phone: (714) 979-9747
Fax: (714) 979-9749
Street-level locationGet directions
Mailing address
3000 W Macarthur Blvd Ste 413
Santa Ana, CA 92704-6941
Registry dates
- Enumerated
- 2007-09-24
- Last updated
- 2007-09-24
Frequently asked questions
- What is William Lyon's NPI number?
- William Lyon's National Provider Identifier (NPI) is 1548456585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Lyon's specialty?
- William Lyon is listed in the NPPES registry with a primary specialty of Contact Lens Fitter (Eye and Vision Services Providers).
- Where is William Lyon located?
- William Lyon's practice location on file with NPPES is 3000 W Macarthur Blvd Ste 413, Santa Ana, CA 92704-6941.
- What is William Lyon's phone number?
- The practice phone number listed in the NPPES registry for William Lyon is (714) 979-9747.
- Is William Lyon's NPI active?
- Yes — William Lyon's NPI (1548456585) is active in the NPPES registry as of the last update on 2007-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.