Our Team
Psychiatric CNPs
Compassionate psychiatric care to support your mental health journey
Our Psychiatric Nurse Practitioners provide comprehensive psychiatric evaluations, medication management, and ongoing mental health support. We work collaboratively with our therapy team to offer integrated, whole-person care.
Jeffrey B. Wallenberg
PMHNP-BC
Hi, I'm Jeffrey. I provide thoughtful, evidence-based psychiatric care for children, teens, and adults. I offer medication management, supportive therapies, and a collaborative approach to mental wellness. I additionally have experience with inpatient and outpatient care.
Alex Dautcehajic
PMHNP-BC
Alex is a board-certified Psychiatric-Mental Health Nurse Practitioner based in Sioux Falls, South Dakota. She earned her Bachelor of Science in Nursing from South Dakota State University and spent eight years working as a registered nurse, caring for patients across a variety of settings. She began her career caring for individuals facing cancer in the inpatient setting and later gained experience in the Emergency Department, working with patients of all ages and backgrounds. Through these experiences, Alex developed a strong interest in mental health and a desire to provide meaningful, individualized care within her community.
Alex went on to earn her Master of Science in Nursing from Mount Marty University. During her graduate training and after becoming certified, she continued developing her psychiatric practice through mentorship at Thrive Wellness. These experiences shaped her approach to care and reinforced the importance of treating the whole person—not simply a diagnosis. A few of her interests include grief, women's health, ADHD, OCD, anxiety, and depression.
Alex strives to create a welcoming space where patients feel comfortable, heard, and actively involved in their care. She takes time to understand each person's unique experiences and works collaboratively to develop an individualized, evidence-based treatment plan. Whether someone is seeking mental health care for the first time or continuing an established treatment journey, her goal is to help patients feel supported and empowered throughout the process.
Treatment may include medication management, non-medication strategies, or a combination of approaches based on each person's needs and preferences. Alex considers it a privilege to walk alongside her patients and provide them with the tools, support, and knowledge they need to move toward healing and to thrive.