Education & Certification

Licensed In
Illinois

Graduated From
University of Chicago (1975)

National Register Member Since
1976

Mary Hollis Johnston, PhD

I am a licensed psychologist, credentialed as a health service psychologist by the National Register of Health Service Psychologists, a nonprofit organization established in 1974. The National Register credential signifies adherence to the highest standards of professional practice. I provide psychological assessment and treatment along with other preventive and consultative services. For more information on my areas of expertise, ages served, and other practice details, please see below. For more information on the National Register, see www.NationalRegister.org. Thanks for visiting my FindaPsychologist.org profile page!

Practice Characteristics

Areas of Expertise

  • Childhood and Adolescent Problems (e.g., ADHD, school/learning problems, social withdrawal, autism, recurrent abdominal pain, aggressive or oppositional behavior)
  • Individual Psychotherapy

Ages Served

  • Children (3-12 yrs.)
  • Infants (0-2 yrs.)
  • Adults (18-64 yrs.)
  • Adolescents (13-17 yrs.)

Treatment Modalities

  • Psychodynamic Treatment
  • Existential/Humanistic/Interpersonal

Contact Information

Primary Contact

4820 S Greenwood Ave
Chicago, IL 60615-1914
P: 773-624-8181 (Office)