Meet Our Clinicians

Karen Clum is a board certified psychiatric mental health nurse practitioner specializing in general psychiatry across the lifespan. She brings two decades of experience in psychotherapeutic and pharmacologic management to Well Within. She most recently worked as an advanced provider at Saribalas Clinic, an established adult psychiatric and sleep medicine practice in central Ohio, as well as Thompkins Treatment, a child and adolescent community mental health center. While she maintains her real education comes from seeing patients, she prepared for clinical practice with a Bachelor of Science degree in Biology, all of the clinical coursework for a Master's in clinical counseling, and a Master of Science degree in Nursing. Prior to her NP role, she has worked in a variety of settings in both the public and private sector, from cancer research to education. She has a proven entrepreneurial spirit, starting the charter school Columbus Bilingual Academy (originally VIA Academy), establishing Franklin County Crossroads, a dropout recovery program for at-risk high school students in central Ohio, and ultimately founding Well Within. 

 Kristen Mizumoto is a board certified Adult Psychiatric Mental Health Nurse Practitioner.  She grew up in Cleveland and graduated with a BA in Psychology from the University of Michigan.  After graduation, she worked at a homeless shelter in Chicago before going back to nursing school and getting her RN degree from Case Western.  Kristen practiced as an oncology nurse for two years before choosing to pursue her passion in mental health and obtaining her Masters of Science as a Psychiatric Mental Health Nurse Practitioner from the University of Chicago.  Prior to joining Well Within, Kristen has provided psychiatric care and medication management for over 10 years in the community mental health setting. She enjoys treating a variety of mental health concerns and strongly believes that the power of therapy along with medication can help her patients achieve optimal mental health.  She values each patient's voice in their care and believes that your goals regarding your mental health are the foundation of your recovery and ultimate success.  

 Rebecca Weiser is a board certified Psychiatric Mental Health Nurse Practitioner who sees patients across the lifespan. She is a two time graduate of the Ohio State University where she completed her Bachelor of Science and Master of Science in Nursing.

Rebecca worked as an RN in pediatric primary care and inpatient adult psychiatry before working as a Psychiatric Nurse Practitioner. Prior to joining Well Within she provided psychiatric care and medication management for over 8 years to children, high risk youth, and young adults in community mental health settings. She is a passionate mental health advocate and enjoys providing clinical training to student psychiatric nurse practitioners and medical students.

Rebecca partners with her patients and their families to deliver evidence based, compassionate care. She believes in the importance of a strong therapeutic partnership and providing psychoeducation to her patients about their mental health and treatment options. Rebecca considers it a privilege to hear each individual’s story while supporting their journey to wellness.

Jenna Birdsell is a board certified child and adolescent psychiatric clinical nurse specialist and board certified pediatric nurse practitioner. Jenna received her BA in Elementary Education and then spent 10 years learning child development at home with her 4 children.  She then went back to school and completed 2 advanced practice nursing programs (Pediatrics and Child and Adolescent Psychiatric/Mental Health) at OSU.  Since graduation, Jenna has worked in primary care and community mental health. She is an alumni of the National Health Service Corps, has worked with children in the foster care system and intensive psychiatric care programs, and is an Adjunct Instructor of Clinical Practice at OSU, precepting student nurse practitioners.  Jenna believes in an approach to care that involves shared decision-making with the child/adolescent through an approach that is warm and validating.   

Lacey Kolb is a board certified Psychiatric and Mental Health Nurse practitioner who sees patients across the lifespan.  She grew up in southeast Ohio and received her Bachelors of Science in Chemistry from Walsh University.  After practicing as a chemist for several years, she chose a different career path and attended the Ohio State University where she received her Masters in Nursing.  She previously worked in a community mental health outpatient practice where she partnered with Stonewall Columbus to provide care to individuals in the LGTBQIA+ community.  After that, she worked in a private practice setting for the last five years.  She believes in a holistic approach to treatment and values collaboration with therapists and other health care providers.  Her focus of treatment is to reduce debilitating symptoms, foster wellness and improve each individual's quality of life.  She believes in partnership within medical decision making and values each patient’s active participation in their treatment.