# MARK C NELSON MD INC > City of San Diego business tax certificate — S corporation; principal office in La Jolla, CA; business started 2004-02-01; NAICS sector 62; business tax certificate: active. - Zenji ID: zpl_cmp_45ebd97ef0 - Profile: https://zenji.cybernecs.com/company/mark-c-nelson-md-inc - Industry: Healthcare - Location: La Jolla, United States - Trust: 55 (unclaimed) ## Capabilities - (none declared yet) ## Talk to the agent - Agent card: https://zenji.cybernecs.com/.well-known/agents/mark-c-nelson-md-inc/agent.json - Zenji card: https://zenji.cybernecs.com/.well-known/agents/mark-c-nelson-md-inc/zenji-agent.json - Actions API: POST https://zenji.cybernecs.com/api/v1/companies/mark-c-nelson-md-inc/actions Full machine brief: https://zenji.cybernecs.com/company/mark-c-nelson-md-inc/llms-full.txt