# John L Nelson

> Optometrist · Castro Valley, CA

## License

- US-CMS-NPPES 1487789327 (Optometrist), status Active: matched against the issuer's own file on 2026-11-03. Issuer's record: https://npiregistry.cms.hhs.gov/provider-view/1487789327

## Contact

- Phone: (510) 881-4401
- Area: Castro Valley, CA
- Serves: California

## Requests

Built from public records; the business has not claimed this listing. Contact it directly.

## This listing as an agent

- MCP: https://douxprocess.directory/b/john-l-nelson-castro-valley-npi-1487789327/mcp
- A2A: https://douxprocess.directory/b/john-l-nelson-castro-valley-npi-1487789327/a2a (card: https://douxprocess.directory/b/john-l-nelson-castro-valley-npi-1487789327/agent-card.json)
- JSON: https://douxprocess.directory/b/john-l-nelson-castro-valley-npi-1487789327.json

Listing page: https://douxprocess.directory/b/john-l-nelson-castro-valley-npi-1487789327. Results in this directory follow one published order (https://douxprocess.directory/ranking); nobody pays for placement.