Proudly providing excellence to Siouxlanders through our patient care since 1998.
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Our Mission

The mission of Mental Health Associates is to provide the highest quality mental health services, with a commitment to each individual at any stage of their life, and to provide research-based therapeutic services by highly trained and independently licensed professionals.

Committed To Your Mental Health

  • ADHD
  • Autistic Spectrum Disorders
  • Anxiety Disorders
  • Chronic Illness and Pain
  • Defiance and Tantrums
  • Educational Problems
  • Trauma Responses
  • Gender Issues
  • Mood Disorders
  • Psychotic Disorders
  • Relationship Issues
  • Sleep Disturbances
  • Stressful Life Events

Reasons Clients Continue to Choose Mental Health & Associates

Lois Holmes, LISW is a certified Grief and Bereavement counselor.


Jessica Luitjohan, PsyD is the only Pediatric Psychologist in the area.


Susanna Shell-Phillips, LISW is certified in Clinical Hypnosis


Denise Marandola, PhD has over 20 years experience providing therapy and Psychological testing services.


Scott Cox, ,LISW has over 20 years experience with specialization in relationship problems and effectively communicating with others.

Mental Health AssociatesStaff

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Denise Marandola, Ph.D

Dr. Denise Marandola is a Clinical Psychologist who received her undergraduate degree in Psychology from Morningside College. Master’s Degree from the University of Nebraska at Omaha and her Ph.D. in Clinical Psychology from the University of South Dakota.

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Jessica Luitjohan, Psy.D., HSPP

Dr. Jessica Luitjohan received her doctorate in Clinical Psychology at Indiana State University in 2005. She then completed a two-year fellowship, specializing in pediatric health psychology, through Michigan State University.

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Susanna Shell-Phillips, MSW, LISW, CADC

Susanna earned her Master's Degree in Social Work from the University of Omaha. She is a licensed independent social worker and certified alcohol and drug counselor in the State of Iowa.

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Scott Cox, LISW

Scott D. Cox, LISW has been practicing as a mental health therapist since graduating with a Master’s of Social Work degree in 1999 from the University of Nebraska at Omaha.

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Lois Holmes, LISW

Lois Holmes, LISW has over 15 years of experience working with individuals, families and within the community. She is a Certified Resolve Through Sharing Counselor and Coordinator.

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Jeanne Mathey & Tammy Rusch

Our excellent office staff that makes your appointments, and helps keep everything running smoothly for you and our providers.

Mental Health Associates'Services Provided

Specialized Diagnosis of Autistic Spectrum Disorders (with the ADOS)

Individuals, Family, Marital, and Couples (Traditional and Nontraditional) Therapies

Specialized Treatment of Autistic Spectrum Disorders (with Applied Behavioral Analysis)

Psychological Evaluations
and Psychological Testing
Group Therapy

Age Ranges: from 2 to Geriatric

On Site Crisis Intervention

Some Providers Available for Public Speaking
Our location

2212 Pierce Street, Suite 100, Sioux City, IA 51104

Call Us

(712)255-8323

Fax

(712)255-8287