Investigative Services: Offices

  • San Francisco
  • 1208 Vicente Street
  • San Francisco, CA 94116
  • Tel: (415) 759-5056
  • Fax: (415) 759-5057
  • E-mail: info@dnsis.com
  • San Jose
  • 1425 Koll Circle, Ste 101
  • San Jose, CA 95112
  • Tel: (408) 453-6226
  • Fax: (408) 436-8391
  • E-mail: info@dnsis.com
  • Santa Rosa
  • 1825 Ferdinand Court
  • Santa Rosa, CA 95404
  • Tel: (707) 575-6909
  • Fax: (707) 575-6953
  • E-mail: info@dnsis.com

Investigative Services: Affiliations/Memberships

FBINAA logo

California Association for Licensed Investigators (CALI)

ASIS International

California Peace Officers Association

FBI National Academy Associates

Police Officers (PORAC)


PI License # 25120     PPO # 9700     Established 1986