Our Providers

Catalyst Behavioral Health is growing—we have five amazing providers ready to accept referrals. Each of our providers offers a unique set of services that complement one another, and they collaborate to ensure proficiency in their mental health services. Please read below to learn more about each provider.

portrait of Doctor Tracy Kalnins

Dr. Tracy List PhD

Licensed Psychologist, Neuropsychologist


psychologytoday.com |

Office Hours

Monday–Thursday | 9am–4pm

Dr. List is a Neuropsychologist practicing in Lincoln for nearly 25 years. She finds counseling to be rewarding, and helps clients to view situations as an opportunity for growth and improve their quality of life.


  • Brain Injury—Post Recovery
  • Post-Concussion Evaluations
  • Concussion Management
  • Concussion Baseline Testing
  • Anxiety & Depression
  • Medical Comorbidities
  • Couples Counseling
  • Neuropsychological Testing
Portrait of Angela Hillman

Angela Hillman LIMHP, CMSW

Licensed Independent Clinical Social Worker

Master of Social Work, University of New England
BS in Psychology, University of South Dakota

Office Hours

  • Monday–Thursday | 10am–6pm
  • Friday | 9am–3pm


  • Anxiety & Depression
  • Grief
  • Schizophrenia
  • Relationship Issues
  • And More!
Portrait of LaTosha Jackson

LaTosha Jackson LIMHP, CMSW

Licensed Independent Clinician Social Worker

Master of Social Work, Salem State University
BA in Psychology and Sociology, Hastings College


Office Hours

  • Monday | 10am–6pm
  • Tuesday–Friday | 9am–5pm


  • Anxiety & Depression
  • Mood Disorder
  • Dialectical Behavior Therapy
  • Autism Spectrum Disorders
  • And More!
Portrait of Hannah Couillard

Hannah Couillard MS Ed., LMHP, CPC

Licensed Therapist

MS Ed. in Clinical Mental Health Counseling, UNK
BS in Psychology, UNK


Office Hours

  • Monday–Thursday | 10am–5pm


  • Self-Esteem
  • Body Image
  • Academic Success
  • Stress Management
  • And More!
Portrait of Liz Sizer

Liz Sizer MS Ed., LIMHP, PLADC

Licensed Therapist

MS Ed. in Community Counseling, UNK
BA in Christian Counseling/Bible, CBC


Office Hours

  • Monday–Thursday | 10am–6pm
  • Friday | 9am–2pm


  • Chronic Trauma/PTSD
  • Anxiety & Depression
  • Codependency
  • Circle of Security Parenting Groups
  • And More!
Gina Pashby

Gina Pashby

Office Manager


Office Hours

  • Monday–Thursday | 9am–4pm
  • Friday | 9am–12pm

We Are Expanding!

Catalyst is seeking any Ph.D's, LIMHP's, LMHP's, and PLMHP's close to licensure. If you are interested in practicing with us, contact our office manager Gina Pashby at 402.261.8313

Or send us an email for more information | assistant@catalystbehavioralhealth.com