David W. Zierk, Psy.D.


Licensed Clinical Psychologist #3194

National Provider Identification #1770736498

Qualified Rehabilitation Consultant #1466

Dr. Zierk holds a doctorate degree in Clinical Psychology from the University of Denver, where he took advanced courses in physiological psychology, neuropsychology, psychometrics, psychopharmacology, learning theory, behavioral assessment, trauma evaluation, and personality assessment. He is a licensed clinical psychologist in the state of Colorado.

Dr. Zierk has worked in a wide variety of clinical settings, including a health maintenance organization (HMO); level-I trauma center and psychiatric facility; senior care center; family practice residency training program; low-income couple & family therapy center; & private practice.

Areas of Forensic Expertise

Dr. Zierk's expertise includes:

  • Mood Disorders (MDD, Bipolar)
  • Anxiety Disorders (GAD, PD, SP)
  • Neuropsychological Functioning
  • PTSD and Complex Trauma
  • Chronic Pain & Coping Skills
  • Functional Overlay & Delayed Recovery
  • Abnormal Illness Behavior
  • Personality Assessment
  • Ecological Validity & Adaptive Functioning

Dr. Andrew Fields, PhD, Psychologist



Dr. Fields has a doctorate in Counseling Psychology and has been using his skills, for the past seven years, to help students connect personal growth with career development. Dr. Fields has worked extensively with students dealing with concerns related to personal and professional development, and he understands the vital link between career development and self-worth. He strongly believes that direction and passion help a person overcome many of life's obstacles or setbacks, and creates resilience to hardship, challenges, and stressors.