OrganizationActive
John L Nelson
NPI 1487789327 · Optometrist · Castro Valley, CA
John L Nelson is a Optometrist organization in Castro Valley, CA (NPI 1487789327).
Provider details
- NPI number
- 1487789327
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- John Nelson, Owner(510) 881-4401
- License
- 4985 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
Detailed profile(89/100 index)
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.
Practice location
20211 Patio Dr
Suite 100
Castro Valley, CA 94546-4338
Phone: (510) 881-4401
Fax: (510) 881-4423
Street-level locationGet directions
Mailing address
20211 Patio Dr
Castro Valley, CA 94546-4338
Other names (DBA / former)
- Doing business as
- Vision Gallery Optometric Center
Registry dates
- Enumerated
- 2007-02-22
- Last updated
- 2008-06-23
Frequently asked questions
- What is John L Nelson's NPI number?
- John L Nelson's National Provider Identifier (NPI) is 1487789327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John L Nelson?
- John L Nelson is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is John L Nelson located?
- John L Nelson's practice location on file with NPPES is 20211 Patio Dr, Castro Valley, CA 94546-4338.
- What is John L Nelson's phone number?
- The practice phone number listed in the NPPES registry for John L Nelson is (510) 881-4401.
- Who is the authorized official for John L Nelson?
- The authorized official listed on John L Nelson's NPPES record is John Nelson, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John L Nelson's NPI active?
- Yes — John L Nelson's NPI (1487789327) is active in the NPPES registry as of the last update on 2008-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.