Our Team

Chief Executive Officer

Dr. Daniel Tataje

Originally from Peru, Dr. Daniel Tataje owns and leads Mercy Dental Group with an innovative and fresh approach to the family dental care experience. With nearly two decades in the dental field, he is an excellent clinician, a pioneering practice leader, and a proven business builder. In 2017, Dr. Tataje was named Entrepreneur of the Year by Midwest Family Broadcasting and the Latino Chamber of Commerce.

Dr. Tataje received his Doctorate in Dentistry from Garcilaso de la Vega University and has completed advanced training in prosthodontics, TMD, and Orofacial Pain through the University of Minnesota and the University of Kentucky.

With a passion for family, he loves to spend time with his loving wife, scarlet, and their six children as they experience local and far away adventures together.

Chief Operating Officer

Darren Marabelli

As a Badger state native, Darren brings uncommon experience to the Mercy Dental mission of delivering extraordinary oral healthcare. His professional life began as an engineer in the U.S. Army. During his military career he completed two tours in the Middle East, supervised engineering projects, and served as a development and training officer. As a civilian, he effectively transitioned his military leadership experience and training expertise into the dental field.

Darren works closely with our teams to create a mission-aligned, extraordinary patient experience at each location. As a proven leader and coach, he provides a transformative impact for those engaged in the Mercy Dental Group Employee Development Program. Our clinical teams love his charismatic personality and his passion for helping them advance private practice care.

Beyond the office, Darren loves to travel, play music, and enjoy his family and their Fox Red Labrador – Raffi.

Director of Practice Development

Marcie Rauls

For more than two decades, Marcie Rauls has refined her expertise in creating exceptional patient experiences. She leverages her talents through coaching and training our dental teams to consistently deliver that same exceptional experience for every patient.

Her extensive knowledge of dental procedures, insurance, billing management, dental assisting, supply ordering systems, and laboratory procedures gives her unique insight into all aspects of practice management, development, and team training. With excellent communication and relationship building skills, she is an invaluable asset to all of our practices as she helps them achieve success in the communities they serve.

Marcie loves spending time with her husband Dan and their two boys, along with friends and family. A Wisconsin girl for life, summers at the lake are especially priceless!