Lindsay Diemer, D.O.

I am a proud Hoosier and love supporting my local community. During my training, I developed a strong belief in whole-person healthcare and cultivated a passion for helping children and their families thrive. I have a commitment to support children and their families through thoughtful, preventive mental health care. I am especially committed to early intervention to support long-term emotional and developmental health.  

My favorite part of being a physician is the opportunity to help others in meaningful ways while building real connections. I truly enjoy meeting new people, listening to their stories, and understanding the experiences that shape them. It’s incredibly rewarding to partner with patients and families as they work toward growth, healing, and long-term well-being.

I chose Witham because it reflects the kind of medicine I value—community-based, personal, and relationship-driven. Its commitment to serving local families align closely with my belief in whole-person, preventive care. I’m excited to care for patients in the community I call home. I live in Zionsville, Indiana with my husband and our four dogs where we love to spend time in our local community exploring new restaurants.