New Hampshire's only therapist trained in Therapeutic Fly Fishing with EMDR Therapy (TF-EMDR)℠
Traditional office-based or telehealth therapy and nature-based approaches to help people of all ages through trauma, stress, and life transitions.
*Now offering office based appointments in Dover, NH!*


With over a decade of experience in the field, I’ve had the privilege of working with individuals from all walks of life—from children and teens to adults—each navigating their own unique challenges. I have experience treating issues such as PTSD, depression, anxiety, autism, ADHD, relationship issues, grief and loss, personality disorders, eating disorders, substance use, and bipolar disorder.
My experience has taught me how to meet the specific needs of each person. Whether we are out on the water, or working through an issue in my office, I offer many solutions for making therapy a comfortable and helpful process for you.
I’m ready to hold space for whatever you are carrying. No topic is too heavy for me, and there is no conversation I am afraid to have. You can feel confident knowing you're in experienced and capable hands.
Owner and Founder of Streamside Therapy Services LLC
Elias Koester, LICSW

Contact Me
Streamside Therapy Services LLC
Based out of of Rochester and Dover, NH
(207)804-3456
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