Psychology Internship Faculty
Brant VanOrman, PsyD, is the Training Director for the pre-doctoral psychology internship at Pine Rest. He graduated from Wheaton College after completing his internship with Pine Rest. He then conducted assessment and therapy at the Grand Haven clinic for two years before transferring in 2002 to the Psychological Consultation Center on Pine Rest’s main campus. He is an Adjunct Assistant Professor at Michigan State University’s College of Human Medicine. His current outpatient work is largely related to psychological assessment and consultation. He was named Training Director for the internship beginning in 2007. He facilitates the integration of faith, science and practice through the Case Conference Seminar. He supervises the Autism Spectrum Disorder rotation.
Christopher Baker, PhD, earned his Bachelor of Science degree from Northern Michigan University prior to attending the University of Cincinnati where he obtained his Ph.D. in clinical neuropsychology. He completed his pre-doctoral internship at Patton State Hospital in San Bernardino, California and his two-year postdoctoral residency in clinical neuropsychology at the Louis Stokes VA Medical Center in Cleveland, Ohio. His clinical expertise and experience includes adult neuropsychological assessment. He works with individuals with a wide range of neurocognitive disorders, including but not limited to differential diagnosis of dementia, brain injury, and a host of other medical/neurological conditions.
Dr. Baker’s current practice also includes forensic neuropsychological assessment of adults. These evaluations include, but are not limited to, independent medical examinations, disability/return-to-work, guardianship, and intellectual/ developmental disability. He supervises one of the neuropsychology rotations.
Elizabeth Cyr, PsyD, is a supervisor for the Pine Rest Northwest Clinic. Dr. Cyr graduated from the Illinois School of Professional Psychology, Chicago in 2011. She has worked for Pine Rest since entering as a pre-doctoral psychology intern in 2010. She currently serves as the Outpatient Coordinator for the perinatal mood and anxiety disorders team (PMAD). A generalist in practice, Dr. Cyr enjoys serving adolescents and adults with a wide range of presentations. She has particular interest working with individuals experiencing grief, trauma, personality concerns, or PMAD.
Mark DeVries, PhD, is a licensed psychologist who has provided psychological and neuropsychological assessment services since 1992 in a number of settings in Grand Rapids including the psychiatric medical unit, Pine Rest’s Psychological Consultation Center, Pine Rest’s inpatient and outpatient programs, and Hope Network Rehabilitation Services. He supervises the neuropsychological assessment rotation. He completed a PhD in clinical psychology at Fuller Theological Seminary’s Graduate School of Psychology in 1992. He is a member of the National Academy of Neuropsychology (NAN). He currently provides a number of assessment services for adults and older adults, including dementia assessments, ADHD assessments, and clinical psychology assessments.
Sera Gruszka, PhD, is the Assistant Training Director for the pre-doctoral psychology internship at Pine Rest. She graduated from Ball State University in 2011 after completing her internship with Pine Rest. Her post-doctoral work included outpatient therapy in a traditional mental health setting and in a primary care setting. Additionally, she completed one year of a post-doctoral fellowship in neuropsychology. She currently works at the Campus Clinic on Pine Rest’s main campus and provides outpatient therapy to individuals, couples, and families. Her areas of clinical interest include anxiety disorders, OCD, chronic pain, older adult concerns, and marital and family issues. She is a supervisor for Pine Rest’s Psychiatry Residency Program. She was named Assistant Training Director for the internship beginning in 2014. She also supervises the Caring Communities rotation. Dr. Gruszka is an Adjunct Assistant Professor at Michigan State University’s College of Human Medicine.
Scott Halstead, PhD, is a supervisor for the Van Andel inpatient rotation and neuropsychological testing. Dr. Halstead received his degree from Fuller Theological Seminary in 1992, served as a psychologist with the U.S. Air Force from 1991 to 2003, and completed a two-year neuropsychology fellowship at Brown University in 2000. Joining Pine Rest in 2003, he is the Corporate Director of Pine Rest’s Professional Practice Group. He also provides outpatient and inpatient neuropsychological evaluations. Dr. Halstead specializes in working with older adults with memory disorders, and presents to interns on this and other assessment issues.
Gregory Mallis, PsyD, is the supervisor for the Christian Counseling Center outpatient therapy rotation. Dr. Mallis received his undergraduate degree from the University of California, San Diego, and his doctoral degree from the University of Indianapolis in 2012. He joined Pine Rest in 2013. Dr. Mallis has previously worked in settings that include university counseling centers, completing his internship at Purdue University Counseling and Psychological Services. Dr. Mallis’s current clinical areas of interest include working with young adults and adults with anxiety disorders, mood disorders, identity and phase of life issues, relationship issues and couples counseling, compulsive sexual behaviors, men’s issues, and sexuality concerns. He supervises one of the therapy placements at the Southwest Clinic.
Rebecca Low Marchand, PsyD, grew up in West Michigan and began her training in Psychology at Michigan State University. After earning her Master’s degree and doctorate in Clinical Psychology from the Illinois School of Professional Psychology at Argosy University in Chicago, she completed her internship and postdoctoral training in Massachusetts.
Rebecca’s specialization is in family and couples therapy. She has experience and training in several areas including play therapy, mood disorders, parental training, behavioral disorders, self-harming behaviors, trauma, and child/adolescent therapy. She has led professional trainings in sand tray therapy, taught graduate level courses in family and couples therapy, and is published in “Contemporary Family Therapy” for her research into the impact of digital recorder interventions on emotional flooding.
She emphasizes safety and trust as being crucial for a healing environment. Rebecca believes fostering therapeutic relationships, which allow individuals and families to live fulfilling and rewarding lives, is her calling from God. She supervises therapy placement at the Campus Clinic.
Bernice Patterson, PhD, completed the Pine Rest psychology internship in 2013. She received her undergraduate education at the University of Michigan, master’s level training at Wheaton College, and her doctoral level training at Western Michigan University.
She has taken an active role as a member of the psychology internship’s Training Advisory Committee, been asked to serve as Cultural Diversity Facilitator, and she lectures and leads discussions of acculturation in the psychiatry residency program. She is also a licensed Baptist minister.
Bernice participates with Faith Community Outreach, an initiative within Pine Rest that seeks to connect area clergy, churches, and ministries to services available from Pine Rest; as well as develop new services specifically designed to benefit the faith community.
Daniel Post, PsyD, is a licensed psychologist who has practiced at Pine Rest Christian Mental Health Services since 2010. He is the lead forensic psychologist within the Psychological Consultation Center at Pine Rest. Dr. Post completed his undergraduate degree at Calvin College and doctoral degree at Wheaton College. His work experience includes inpatient, outpatient, and forensic assessment and treatment across a diverse population. He provides pre- and post-doctoral psychological supervision and is in charge of the residential testing rotation. Dr. Post has been an adjunct instructor with Michigan State University since 2016, providing forensic lectures and supervision to second and third year psychiatric residents. Dr. Post’s current clinical areas of interest include specialty assessment services, supervision, and the treatment of anxiety, mood, and behavioral disorders in children and adults. Dr. Post is a member of the American Psychological Association. He supervises the Child and Adolescent Hospital rotation.
Bruce Retterath, PhD, is a licensed psychologist who has practiced at Pine Rest Christian Mental Health Services since 1993. He is the manager of the Psychological Consultation Center at Pine Rest. Dr. Retterath completed his undergraduate and doctoral degree at the University of North Dakota. His prior work experience includes inpatient, outpatient and residential settings. Dr. Retterath’s current clinical areas of interest include the assessment and treatment of ADHD, anxiety disorders and mood disorders, diagnostic/personality evaluations, pre-surgical evaluations, learning disability evaluations, and management consultations. Dr. Retterath is a member of the Anxiety Disorders Association of American, American Association of Christian Counselors, and Michigan Psychological Association.
Lisa Schirmer, LP, is a licensed psychologist who has over 30 years of experience working with diverse populations in a variety of clinical settings including outpatient clinics, employee assistance programs, hospitals, intensive outpatient programs and partial hospital programs. She received her M.Ed. in Counseling from McGill University in Montreal, Quebec and earned a Ph.D. in Counseling Psychology from Michigan State University.
Dr. Schirmer believes that empowering relationships are central to healing and recovery. Her clinical orientation is rooted in cognitive behavior theory and therapies. Dr. Schirmer’s areas of interest include working with clients experiencing life transitions, work stress and interpersonal conflict; as well as those struggling with depression, anxiety, living with a chronic mental illness, suicidality, and co-occurring mental health and substance use disorders.
Dr. Schirmer has published and presented on topics related to adult attachment style and work stress, relationship based care, substance use and co-occurring disorders, group therapy, brief interventions and resilience. She supervises one of the therapy placements at the Southwest Clinic.
Mark Eastburg, PhD: President / Chief Executive Officer
Bob Nykamp: Vice President / Chief Operating Officer
Scott Halstead, PhD: Corporate Director, Professional Practice Group
Harmony Gould: Corporate Director, Hospital Based Services
Gary Burkhart: Chair of Psychology Department