Thomas L. Dillon, M.D.

The primary purpose of this website is to help assist potential new patients in assessing whether I, as a psychiatrist, would be a good match for their needs/wants as a patient with psychiatric problems. To facilitate this match, this website provides information about my background and qualifications, my office setup and staff, and the treatment I do and don’t provide.

I am a board-certified general psychiatrist who has practiced in Richland since 1981. Although I treat most psychiatric disorders, I have considerable training and experience and a special interest in the medical treatment of mood disorders (bipolar disorder and depression) and anxiety disorders (panic attacks, obsessive-compulsive disorder, PTSD). I treat patients with appropriate psychiatric medications, plus individual/couples/family psychotherapy (counseling), using psychoanalytic/psychodynamic, behavioral, and cognitive principles, as clinically indicated.

Although I am a general psychiatrist, I generally do not provide care for the following situations:

  • Patients under age 18, unless I am already seeing a close family member
  • ADHD patients seeking stimulants
  • Chronic pain patients seeking opioids
  • Anxiety patients seeking addicting tranquilizers
  • Schizophrenics or psychotic patients
  • Suicidal/homicidal/assaultive patients needing hospitalization
  • Patients with dementia
  • Medicare patients (unless they are willing to sign an opt-out agreement)
  • Patients covered by Medicaid/Apple Health/Community Health Plan of Washington

I do see patients whose health insurance carrier is one of the following:

  • Aetna
  • Allied Benefit Systems
  • Asuris Northwest Health
  • Carpenters Health & Welfare (CIGNA)
  • CIGNA Health Plan
  • First Choice Health Network
  • GEHA
  • Group Health Options (First Choice Health Network)
  • Lifewise Healthplan of Oregon
  • Lifewise Healthplan of Washington
  • Meritain
  • Moda Health (formerly ODS Health Plan)
  • Northwest Sheetmetal Workers
  • ODS Health Plan
  • Premera Blue Cross
  • Providence Behavioral Health
  • Providence Health Plans
  • Regence BSWA (Blue Cross)
  • Summit America Health Services
  • Teamster Welfare Trust
  • TPSC Trusted Plans Service Corporation
  • TRICARE Washington State
  • Uniform Medical Plan
  • United Behavioral Health
  • United Employee Benefit Trust
  • United Health Care
  • Zenith Administrators
  • Zenith American Solutions


Curriculum vitae