# Quest Diagnostics Incorporated

> Medical laboratory · Downey, CA

## License

- US-CMS-NPPES 1386783637 (Clinical Medical Laboratory), status Active: matched against the issuer's own file on 2026-11-03. Issuer's record: https://npiregistry.cms.hhs.gov/provider-view/1386783637

## Contact

- Phone: (562) 923-5474
- Website: http://www.questdiagnostics.com/home.html
- Address: 11411 S Brookshire Ave Ste 203, Downey, CA, 90241
- 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/quest-diagnostics-incorporated-downey-npi-1386783637/mcp
- A2A: https://douxprocess.directory/b/quest-diagnostics-incorporated-downey-npi-1386783637/a2a (card: https://douxprocess.directory/b/quest-diagnostics-incorporated-downey-npi-1386783637/agent-card.json)
- JSON: https://douxprocess.directory/b/quest-diagnostics-incorporated-downey-npi-1386783637.json

Listing page: https://douxprocess.directory/b/quest-diagnostics-incorporated-downey-npi-1386783637. Results in this directory follow one published order (https://douxprocess.directory/ranking); nobody pays for placement.