Outsell Inc. Dennis O’Brien

Dennis O’Brien

Consulting Partner


Dennis is the managing director of the O’Brien Media Group, a marketing consultancy that helps clients expand audiences, improve engagement, and grow revenue. A lifelong learner, Dennis is ahead of the curve in understanding and applying data and technology to sales, marketing, and information product development. Modernizing processes and mentoring staff is a cornerstone of his business approach. Dennis brings a data-driven and technology-focused strategy that improves efficiency and effectiveness while generating new opportunities.

In his capacity as consulting partner, Dennis advises on marketing and business decisions served by Outsell’s research and consulting business. He provides expert guidance on strategic marketing, data & analytics, marketing technology, business planning & forecasts, new product development, and go-to-market planning and execution.


  • Strategic marketing
  • Channel development
  • Competitive analysis
  • Content strategy
  • Data and analytics
  • Marketing technology
  • Marketing & sales process
  • Market research, sizing, and market share
  • New product development
  • Subscriptions and membership models


Dennis earned a BA in economics from Binghamton University and an MBA in marketing management from Iona College.


  • Simplify Compliance (HealthLeaders Media, HCPro, Decision Health)
  • Wolters Kluwer (UpToDate.com)
  • Taunton Press
  • Condé Nast
  • Reader’s Digest


Linkedin: Dennis O’Brien

Email: dobrien@outsellinc.com

Phone: +1 (919) 358-2984

More About Dennis

First Job

Newspaper delivery (on my 10-speed Ross with rear-wheel basket)

Activities Outside of Work

Family, community volunteer, competitive bagpiper, and not-so-competitive golfer

Favorite Authors

Frank McCourt

William Gibson

Gore Vidal

Scott Turow

Christopher Ruocchio

Where I Grew Up

Carmel, NY (home of American Revolutionary War heroine Sybil Ludington!)

First Car

1979 Pontiac Grand Prix