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Professional Staff


John Engler, Ph.D.    John Engler, Ph.D.
E-Mail Address:  jpengler@psychserv.net

Dr. Engler is a licensed clinical psychologist with more than 30 years of experience as a private practitioner and the founder of Psychological Services.  Dr. Engler provides individual, family, and couples counseling and psychotherapy to outpatient clients with a broad range of clinical issues. He performs psychological testing, including disability and fitness for duty evaluations, and currently has contracts with the City of Omaha Police and Fire Departments.  Dr. Engler also has experience as a consultant and gatekeeper for managed care organizations.



James H. Mathisen, Psy.D.   


James H. Mathisen, Psy.D.
E-Mail Address:  jhmathisen@psychserv.net

Dr. Mathisen is a psychologist licensed in the State of Nebraska. He has been practicing with Psychological Services since 1999. His practice includes counseling and psychotherapy with clients ranging in age from pre-school to late adulthood.  Treatment modalities include play therapy, brief dynamic therapy, and cognitive-behavioral strategies.  Specialty areas include physical and sexual abuse survivors, substance abuse, ADHD, PTSD, conduct disorder, psychosis, and family therapy.  Dr. Mathisen performs psychological evaluations to assess both gifted and congnitively challenged children and parenting fitness. He also conducts court ordered evaluations for juveniles, adults, and child custody cases. Dr. Mathisen is contracted for psychological services at the Douglas County Youth Center where he provides crisis intervention services with youth at this facility.



Independent Practitioners


Caroline G. Sedlacek, Ph.D., P.C.   


Caroline G. Sedlacek, Ph.D., P.C.
E-Mail Address:  csedlacek@psychserv.net

Dr. Sedlacek is a clinical psychologist licensed in Nebraska since 1971. She was first associated with Psychological Services in 1980. She is trained and experienced in individual psychotherapy and psychological evaluations with adults (18 years and older) including senior citizens who reside in assisted living/extended care settings. She was affiliated with Richard Young Hospital for over 30 years first as Director of Psychological Services and later as a consultant and as a contract psychologist. She served as the outpatient psychologist for Eppley Treatment Center for 10 years. She has worked in university counseling centers. She has experience as a mental health adviser and gatekeeper in managed care organizations. She sees individuals with a variety of adjustment and mental health concerns with a special focus on women's issues throughout their stages of life.



Eugene J. Egnoski, Ph.D.   


Eugene J. Egnoski, Ph.D.
E-Mail Address:  gegnoski@psychserv.net

Dr. Egnoski is a clinical psychologist licensed in both Nebraska and Iowa. He has more than 40 years of experience. He has been in private practice since 1974. He performs psychological evaluations - for example; personality and intelligence testing - and client centered individual psychotherapy. He became associated with Psychological Services in 1994. Prior to joining Psychological Services he was the Chief Psychologist at Glenwood State Hospital and Director of Psychological Services for Educational Service Unit #3.



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Mary Ann Strider, Ph.D.
E-Mail Address:  mstrider@psychserv.net

Dr. Strider has an undergraduate degree in biochemistry, a masters in Industrial Psychology a Ph.D. in Clinical Psychology, and internship and postdoctoral fellowship in neuropsychology from the University of Nebraska Medical Center. Dr. Strider was on the UNMC faculty prior to private practice in Council Bluffs, Iowa. Dr. Strider focuses on assessment and consultation for persons from 6 years of age through the geriatric years. Dr. Strider has a special interest in health psychology.



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Geraldine A. Nesvan, M.A., P.C.