Jeff Siwak, MBA

Marketing Manager

Along with his work at D2, Mr. Siwak is an adjunct professor at Saint Louis University’s College of Public Health and Social Justice, where he teaches health care marketing.

Prior to joining D2, he served as Director, Client Accounts for The Weinbach Group, a health care marketing and advertising agency. Mr. Siwak previously held a marketing leadership role at a division of BJC Healthcare. His health care marketing experience also includes working at Coventry Health Care, overseeing the proposal department at Express Scripts, and handling product development at Magellan Health. He also has worked on a contract basis for Express Scripts and Blue Cross Blue Shield.

Mr. Siwak achieved a Master of Business Administration degree in Marketing at Saint Louis University, and he earned a Bachelor of Science degree, majoring in Economics, at the University Missouri – Columbia.


Corporate Branding and Messaging
Inbound and Outbound Marketing Strategy and Tactics


Saint Louis University
Masters of Business Administration, Marketing

University of Missouri-Columbia
Bachelor of Science, Economics