Dr. Marc Cooper

Dr. Marc Cooper, Dentist Entrepreneur Organization President

DEO President

Dr. Marc Cooper’s principal commitments are to educating, developing, and training dentist-entrepreneurs and senior executives of emerging or established managed group practices. His work is focused on developing strategies to succeed in the emerging future of dentistry, leadership development, senior executive development, corporate infrastructure development, and the development of high-performance cultures. Over the last six years Dr. Cooper has worked with dentist-entrepreneurs worldwide to generate highly successful managed group practices.

Read More About Dr. Marc Cooper

Jacob Puhl

Jacob Puhl, Dentist Entrepreneur Organization CEO


As current partner and CEO of the Dentist Entrepreneur Organization (DEO), Jake works exclusively with emerging-market group dental practices by building a community of like-minded group practice owners. Jake gives group practice leaders the resources and support they need to move from disjointed “dots on a map” to unified, thriving dental group enterprises by “Thinking like a CEO.”

Jake earned his MBA from Xavier University and has now started, owned, and served as CEO of several seven-figure businesses.

Read More About Jacob Puhl

Darin Acopan

VP Business Development

Darin has been working with managed group dental practices in the DSO space for the past four years. He is focused on interviewing and selecting new DEO members, heads strategic partnerships for the DEO and works on DEO industry events.

In his free time Darin enjoys spending time with his family in the Pacific Northwest, listening to dental/financial podcasts and volunteering at the local humane society.

Damaris Perez

Director of Operations

Damaris has a background in Economics, but in the DEO she is known as “the knower of all”. Damaris is in charge of DEO operations and events. She is the main point of contact for DEO members.

When not doing amazing work for DEOers Damaris is traveling. Find her in a charming coffee shop in Paris or under a hut in Thailand.

Angela Ekstowicz

Communications Manager

Angela spent the majority of her career in banking but moved to the DEO for a new challenge. Angela is known as the “Marc whisperer” and helps to juggle many of the moving parts with the DEO’s communications and events. She is Marc’s executive assistant and can assist with his calendar and calls.

When not wrangling Marc, Angela is busy in Wisconsin with her 3 children, husband and pets – dreaming of owning a mini-farm.

Megan Anzisi

Megan Anzisi

Manager of Corporate Events

Megan spent many years in the financial industry. She brings her organizational skills to the planning of our DEO events and our budgeting matters.

 In her free time, Megan enjoys reading, traveling, learning new languages and spending time with her family.

Giselle Grant

Digital Marketing Manager

Giselle was a Developer out of high school, but left the coding life to major in Business and deliver outstanding experience to clients. Giselle is in charge of our Marketing, i.e., delivering the best of DEO via our different communication channels.

Giselle has lived on three continents and in six countries. When she’s not working, she is cooking, hosting friends, or keeping her free-range hens from attacking her organic garden.

Gabrielle Rivard


Gabby works on the communications team, writing and editing DEO content. Her experience includes small-town newspapers and Silicon Valley tech giants, and a lot of adventures in between. She has a bachelor’s degree in journalism and a master’s degree in library science.

Gabby lives in Portland with her husband and two small children. She enjoys writing, reading, politics, yoga, and traveling.