Founded in 2003, Trivantus is a leader in payroll services, employee benefits and human resource administration. Our philosophy is based on employing relationships through excellent communication. We believe in true customer service and stand behind this commitment.

• Payroll
• Tax Filing
• Human Resources
• Benefits

• Mr. Dan Casey
  Vice President of Sales
  20 Market Street

  Manchester, NH 03101
  Phone: (603) 624-7788 x120
  Fax: (603) 647-9911
  Send an Email
• Ms. Diane Denoncourt
  Health Broker
  20 Market Street

  Manchester, NH 03101
  Phone: (603) 624-7788 x123
  Fax: (603) 647-9911
  Send an Email
• Mr. Matthew Gatsas
  Vice President
  20 Market Street

  Manchester, NH 03101
  Phone: (603) 624-7788 x300
  Fax: (603) 647-9911
  Send an Email
• Mr. Michael J Gatsas
  Founder/CEO
  20 Market Street

  Manchester, NH 03101
  Phone: (603) 624-7788 x100
  Fax: (603) 647-9911
  Send an Email
• Mr. David Langlois, CPP
  Director of Operations
  20 Market Street

  Manchester, NH 03101
  Phone: (603) 624-7788 x170
  Fax: (603) 647-9911
  Send an Email
• Mr. Anthony Poole
  Director of Sales
  20 Market Street

  Manchester, NH 03101
  Phone: (603) 624-7788 x122
  Fax: (603) 647-9911
  Send an Email