Katherine Lewitzke PsyD

Clinic Director

Dr. Lewitzke received her neuropsychological assessment training under multiple board certified and board eligible psychologists. She has also completed various courses through the National Academy of Neuropsychology.

Dr. Lewitzke is a compassionate clinician who will advocate for you and your family members. She understands the importance of finding eminent care and is dedicated to providing quality and empathetic services in an intimate setting.

Greg Thornhill MA TLLP

Clinical Psychologist

Greg is a Clinical Psychologist with a client focus on helping children ages 4-17, and also in working with teachers to deal with their daily stressors.

During sessions he uses play and talk therapy. A humanistic as well as cognitive behavioral therapy approach are the primary philosophical approaches to how he conducts therapeutic sessions.

"It is my goal to help every client find their path to becoming the best person possible."

Emily Short MA LLMFT

Marriage and Family Therapist

Emily holds a Masters in Family and Marriage Therapy and is perusing her Doctorate Degree. Emily has been trained in Trauma Focused Cognitive Behavioral Therapy and has extensive experience in assessing and working with children who have experienced trauma. Prior to coming to Bright Pine, Emily worked collaboratively with a neurodevelopment assessment team to complete Trauma Assessments for youth involved in the Child Welfare System. She is skilled in conducting many assessment tools that assess the cognitive and academic abilities of a youth, as well as the Emotional and Behavioral abilities.

Emily has experience working with individuals, couples, and families affected by: anxiety, depression, behavioral issues, communication, divorce, trauma, infidelity, and more.

Sara Rietsch LPC, CAADC

Licensed Professional Counselor

Sara is a Licensed Professional Counselor and Certified Advanced Alcohol and Drug Counselor. She specializes in co-occurring disorders, substance abuse, and anxiety and mood disorders.

Her goal is to assist and empower clients to find their own best solutions and increase coping skills and resiliency. She strives to provide a warm and welcoming environment while supporting you through your personal journey.

Sara works with adolescents, teenagers, and adults struggling with depression, anxiety, addiction, stress, life transitions, trauma, grief and loss, relationship issues, and anger. She also has experience working with LGBTQ issues. Sara uses a person-centered approach, including Cognitive-Behavioral Therapy and Motivational Interviewing.


*Articles and all content on our site are for educational purposes only and should not be taken as professional medical advice. Please consult your licensed clinician for a proper evaluation.


6060 Dixie Highway, Suite H
Clarkston, MI 48346

Local: 248-383-8728
Fax: 888-789-6449