the family center staff

Our doctors and clinicians offer a wealth of experience in treating individuals who have incurred psychological trauma, suffer from depression & mood disorders, anxiety, bereavement & grief-related issues, eating disorders, medical illness, sexual and/or physical abuse and neglect, multicultural psychology and diversity, LGBT issues, and persons dealing with dual diagnoses. 

Glory Fox Dierker, Ph.D.
Executive Director
Clinical Psychologist
parenting coordinator
Erika J. Siegel, Ph.D.
Clinical Psychologist
parenting coordinator

Dr. Erika J. Siegel is a Licensed Clinical Psychologist who specializes in individual psychotherapy for adults and adolescents, as well as couples therapy, marital counseling, and parent guidance/education.  Her areas of clinical focus are bereavement and psychological trauma, anxiety, depression, and mood disorders.  Dr. Siegel graduated from Swarthmore College with a B.A. in the History of Art and received an M.A. in General Psychology and an M.A. and Ph.D. in Clinical Psychology from The Catholic University of America.  She completed her pre-doctoral internship at St. Elizabeths Hospital in Washington, DC, focusing there on work with older adults.  She completed her clinical residency in Emergency Services for Fairfax County before joining The Family Center 2004.  Dr. Siegel co-teaches the course, Parenting Together, Living Apart, with Dr. Glory Fox Dierker.  She is a member of the Association of Family and Conciliation Courts (AFCC) and has completed the training, Parenting Coordination: Working with High Conflict Families.

Dr. Glory Fox Dierker is the Executive Director and Founder of The Family Center. She is a Licensed Clinical Psychologist who specializes in individual psychotherapy for adults and adolescents, as well as couples therapy, marital counseling, group therapy, and parenting education and guidance.  Her research focuses on family relationships with an emphasis on adult intimacy and parent-child attachment. Her areas of clinical focus include psychological trauma, anxiety, depression, and mood disorder. Dr. Dierker has been devoted to improving the quality of life for individuals and families in Northern Virginia since 1971. She began as a social worker and child development specialist for the Alexandria Department of Social Services, and throughout the 1980s, Dr. Dierker developed and directed the Center for Women and Families, a parent education and support program. More recently, Dr. Dierker founded The Parenting Project, which focuses on parental guidance, education, and support. Dr. Dierker is a Virginia Supreme Court certified provider of the parent education seminar required of divorcing parents with minor children. She authored Parenting Together, Living Apart, a parenting manual based on scientific principles of Attachment Research; and the course by the same name. 

Calm Lake
Maggie Dierker, MSW, JD
Clinical Social Worker
Family Mediator 
Parenting Coordinator
 
Jennifer Marceron Glienke, Ph.D.
Clinical Psychologist 
Fran M. Holland Ph.D.
Clinical Psychologist

Dr. Fran Holland specializes in individual therapy; group therapy; couples therapy and marriage counseling; parental guidance and education; psychological assessment; neuro-psychological treatment and evaluation.

Maggie is a psychotherapist, pre-licensed; Virginia Supreme Court Certified Mediator; Parenting and Child Development Educator, and Parenting Coordinator. Prior to focusing her practice on conflict resolution and psychotherapy, Maggie practiced transactional law. She enjoys combining her knowledge and experience in law, mental health, and advocacy to help improve the quality of life for individuals and families of diverse backgrounds within the community. Maggie has experience working with couples, individuals, and families; and with issues of abuse and neglect, depression, anxiety, death and dying, grief, sexual orientation, gender identity, rape, assault, domestic violence, separation and divorce, substance abuse, trauma, and PTSD. She earned a B.A. in psychology at the University of Virginia, Juris Doctorate at Loyola University New Orleans School of Law with concentrations in family law and environmental/social justice. She completed a neuropsychology curriculum at Georgetown University, international law curriculum at the University of Vienna (Universität Wien) School of Law, and earned her Master in Social Work at The Catholic University of America with a concentration in military social work and sexual trauma. Maggie has represented adolescents and their families for Truancy Intervention Project, children experiencing abuse and neglect for Court Appointed Special Advocates (CASA), adults experiencing chronic homelessness, and severe mental illness for Midtown Assistance Center in Atlanta, GA and for Miriam's Kitchen in Washington, DC. Maggie has served as a regularly featured speaker at Second Saturday Fairfax/Arlington, “What You Need to Know About Divorce,” and a panelist at the Northern Virginia Mediation Service, "Careers in Mediation.” She is a member of the Association of Family and Conciliation Courts with specialized training in “Parenting Coordination: Working with High Conflict Families," the American Bar Association, State Bar of Georgia, Association of Family and Conciliation Courts, The Academy of Professional Family Mediators, National Association of Social Workers (NASW), Phi Alpha Honor Society, and Greater Washington Society for Clinical Social Work.

Email: mfoxdierker@thefamilycenter.com

Dr. Jennifer Marceron is a licensed clinical psychologist at The Family Center. Dr. Marceron graduated with distinction with a bachelor's degree in psychology from the University of Virginia and with a Ph.D. in clinical psychology from The George Washington University in Washington, D.C. She completed her pre-doctoral internship at the University of Denver Health and Counseling Center (APA accredited) where she provided individual and group therapy to college-age adults in an integrated care setting. Dr. Marceron has worked in a variety of settings including community mental health, university counseling centers, and outpatient medical centers. Dr. Marceron specializes in individual therapy working with adolescents, young adults and adults dealing with eating disorders, anxiety, depression, relationship concerns, disability, and chronic illness. Dr. Marceron’s approach is client-centered and she uses evidence-based practices (CBT, ACT, DBT) tailored to meet the needs and interests of her clients. Email: jmarceronphd@thefamilycenter.com

Gus Nava, Ph.D.
Clinical Psychologist
parenting coordinator
 
Johnathan duff, Ph.D.
Clinical Psychologist 

Dr. Johnathan Duff is a clinical psychologist at The Family Center. He received his Ph.D. in Counseling Psychology from the University of Miami and completed his internship in clinical health psychology at The Ohio State University’s Wexner Medical Center. He specializes in individual therapy with adults and adolescents dealing with anxiety, depression, adjustment to life stress, and medical illness. He also works with children and specializes in testing and assessment for Attention-Deficit/Hyperactivity Disorder (ADHD). Dr. Duff has worked with several populations in a variety of settings including with veterans at a VA hospital, with children and adolescents at a children’s hospital, and with high performing athletes. Dr. Duff holds a bachelor’s degree from Boston College and a master’s degree in Sport and Performance Psychology from the University of Denver. He utilizes techniques from person-centered therapy, cognitive-behavioral therapy (CBT), dialectical-behavioral therapy (DBT), mindfulness, and acceptance and commitment therapy (ACT).

Laura Diskin Gottlieb,​ Psy.D.
Clinical Psychologist

Dr. Laura Diskin Gottlieb is a licensed clinical psychologist at The Family Center. She joined the practice in 2015. Dr. Gottlieb specializes in individual psychotherapy with emerging young adults and adults. She also provides psychotherapy to couples and adolescents. Dr. Gottlieb has demonstrated interests in relationship concerns, self-esteem concerns, life transitions, anxiety and depression, family conflict, family of origin issues, parenting, grief and loss, and women's health issues, including perinatal (pregnancy and postpartum) concerns and adjustment. Dr. Gottlieb graduated from the University of Michigan with a B.A. in Psychology. Prior to graduate school, she served as the project coordinator for a novel, NIMH-funded research study examining children’s psychological, behavioral, and physiological responses to the loss of a parent at the University of Michigan Comprehensive Depression Center. She went on to achieve her doctoral degree in Clinical Psychology from the George Washington University. Dr. Gottlieb completed her pre-doctoral internship at the APA accredited Stony Brook University Counseling and Psychological Services in New York where she provided individual, group, and couples psychotherapy, as well as crisis intervention, to undergraduate and graduate students. She also conducted mandated assessments of students who exhibited behavior that was harmful to self or other. Dr. Gottlieb accepts all BlueCross BlueShield plans and also serves as an out of network provider. She is currently accepting new patients.

Email: ldgottlieb@thefamilycenter.com

Zeyad Layous, Psy.D.
Clinical Psychologist

Dr. Zeyad Layous is a Clinical Psychologist at The Family Center. He earned his doctoral degree in Clinical Psychology from the George Washington University. Dr. Layous specializes in working with adults and adolescents in insight-oriented psychotherapy for issues ranging from relational problems to depression and anxiety. He also received specialized training in working with multicultural and minority populations on his pre-doctoral internship at the Center for Multicultural Training in Psychology in Boston, Massachusetts. Dr. Layous completed a post-doctorate fellowship at the Adult Outpatient Clinic at University of Miami/Jackson Memorial Hospital in Miami Florida, where he continued working with adults and also worked with individuals with medical illness. He is also experienced in providing a wide range of psychological assessment services for adults, adolescents, and children. Email: zlayous@thefamilycenter.com

Dr. Gus Nava is a Licensed Clinical Psychologist who has been with The Family Center since 1993. He works primarily with adults in the areas of individual psychotherapy, couples therapy, group therapy, and parent guidance/education, as well as individual therapy with adolescents. His areas of clinical focus include depression, anxiety, psychological trauma, interpersonal conflicts, parenting coordination, and grief. He is an advocate of assisting clients to develop therapeutic life changes (TLC), which can enhance well-being (e.g., exercise, volunteering). Dr. Nava received his B.A. in Biology from the University of Virginia and his M.A. and Ph.D. in Clinical Psychology from Virginia Commonwealth University. Prior to his graduate work, he was a volunteer undergraduate researcher with the National Institute of Mental Health. While at VCU, he earned a Graduate Fellowship and worked as a Graduate Teaching Assistant/Research Assistant. His post-Ph.D. education has included completing the training, Parenting Coordination: Working with High Conflict Families. Dr. Nava has worked in a variety of settings including community mental health centers and rehabilitation hospitals as well as St. Elizabeths Hospital in Washington, DC, where he completed his pre-doctoral internship. He worked with the Metropolitan (DC) Police Employee Assistance Program, where he gained experience assisting officers with critical incidents debriefings. Dr. Nava is a volunteer clinician with Give an Hour, which is an organization dedicated to providing no-cost mental health services for troops and families affected by the post-9/11 conflicts in Iraq and Afghanistan.

Johanna Williams, Ph.D.
Clinical Psychologist Resident

Dr. Johanna Williams is a resident in Clinical Psychology at The Family Center. She specializes in family studies, mood disorders, trauma, and health care disparities. Dr. Williams has worked with both adolescent and adult individuals, couples, and families in the DC, MD, and VA area from rigorous institutions such as Johns Hopkins, Sheppard Pratt Hospital, and the D.C. Superior Courts. She has also worked in college-based settings such as the Howard University Counseling Center and Baylor University Counseling Center where she helped young adults and professional students manage early life and career transitions. Dr. Williams is psychodynamically trained and a member of the Brooklyn Seminars for Modern Psychoanalysis and a former psychoanalytic fellow with the Washington Center for Psychoanalysis. This extensive training taught Dr. Williams how to understand the complexity of distressingly chronic behaviors. Thus, she is able to collaborate with her clients about a variety of treatment options. Dr. William's comprehensive multicultural training has been a vital asset in her work with foreign exchange students, machismo dynamics, gender identity, aging, disability, sexual identity, Middle Eastern traditions, Black male identity development, community violence, military personnel, and cultural stigma concerning mental health. Dr. William's supplemental training in psychological and neuropsychological assessment helps her understand the totality of clients' presenting concerns and diligently seek professional expertise. She has spoken at several conferences about a number of psychological topics such as policing, psychology training, media, schizophrenia, and family trauma. She received her B.S. degree in psychology from Stevenson University in Stevenson, MD, her M.A. degree in psychology from Long Island University in Brooklyn, NY, and Ph.D. from Howard University in Washington D.C. 

Email: jwilliams@thefamilycenter.com

Emily Petersen, Psy.D.
Clinical Psychologist 

Dr. Emily Petersen is a licensed clinical psychologist at The Family Center. She specializes in individual therapy and psychological assessment with adolescents and adults. Dr. Petersen earned her doctoral degree from Azusa Pacific University. She completed her internship at Southeast Human Service Center in Fargo, North Dakota where she provided individual and group therapy as well as psychological assessment services to children, adolescents, and adults. Email: EPetersen@thefamilycenter.com

Alyssa Poblete, Ph.D.
Clinical Psychologist 
Nora Posner, Psy.D.
Clinical Psychologist

Dr. Nora Posner is a licensed clinical psychologist at The Family Center.  She specializes in child and family mental health, providing treatment and assessment for psychopathology across the lifespan.  Dr. Posner offers individual therapy to children and adolescents suffering from anxiety, mood, and developmental disorders as well as those with ADHD, learning disabilities, and bullying concerns.  Dr. Posner also treats adults experiencing relationship issues, life transition difficulties, and other psychosocial stressors.  She also can administer comprehensive psychological and neuropsychological assessments for individuals needing diagnostic clarification to determine the source of difficulties.  Dr. Posner earned her undergraduate degree (B.A) from Lafayette College and graduated with a doctorate in clinical psychology (Psy.D.) from the Professional Psychology Program at The George Washington University.  Dr. Posner completed her yearlong pre-doctoral clinical internship in Stamford, Connecticut, at the Child Guidance Center of Southern Connecticut, Inc., where she stayed for an additional yearlong postdoctoral fellowship.

Amanda Thompson, MSW
Clinical Social Worker

Dr. Alyssa Poblete is a licensed clinical psychologist at The Family Center. Dr. Poblete graduated with high distinction with a bachelor's degree in Psychology from the University of Virginia. Prior to graduate school, she worked as a project coordinator for a large, federally-funded research study on adolescent girls' depression and non-suicidal self-injury at the University of North Carolina-Chapel Hill. Dr. Poblete earned her Ph.D. in Clinical Psychology from The George Washington University. Her graduate research focused on co-parenting and parental self-efficacy in ethnically diverse families. She completed her pre-doctoral internship at American University Counseling Center (APA accredited), where she provided individual and group therapy as well as crisis intervention to a diverse range of university students. Dr. Poblete has experience working with children and adults in a variety of settings in the D.C. area, including community mental health, university counseling, and medical research centers. Dr. Poblete specializes in individual therapy working with adolescents and young adults experiencing concerns related to anxiety, depression, grief, identity, and relationships. She also has a strong interest in couples and group therapy. Dr. Poblete is an integrative clinician, drawing primarily from relational approaches and third-wave cognitive behavioral therapies that incorporate acceptance and mindfulness (ACT, DBT). She believes in the importance of working collaboratively with clients in order to understand and address their needs. 

Email: apobletephd@thefamilycenter.com 

Amanda is a clinical social worker, pre-licensed, at The Family Center. She earned her Bachelor’s of Science in Psychology at James Madison University, and her Master’s of Social Work at The Catholic University of America within the National Catholic School of Social Service, both with academic honors. Upon graduation at James Madison University, Amanda gained experience working with severe and persistent mental illness at Western State Psychiatric Hospital in Staunton, Virginia. At Western State, Amanda primarily focused on providing group therapy services to long-term care patients. In her time at Catholic University, Amanda first worked with youth and young adults in Washington, D.C. who experienced challenges with familial instability, substance use, trauma, incarceration, and homelessness. Additionally, Amanda spent her advanced year of graduate school at the D.C. Rape Crisis Center. During this practicum work, Amanda received extensive training to provide both therapeutic services and crisis support to clients under the modality of Trauma-Focused Cognitive Behavioral Therapy (TF-CBT). With this training, Amanda facilitated individual and group counseling services to adult survivors of sexual violence, as well as secondary survivors. When facilitating group therapy services, Amanda co-led a trauma-sensitive mindfulness and movement group for adult survivors. Amanda has a strong interest in the mind-body connection and seeks to incorporate the fluidity of movement and breath, as well as grounding techniques, meditation, and affirmations for clients. Aside from a trauma-focused training and background, Amanda is highly interested in utilizing an attachment theory lens, as well as a client-centered, empowerment-based approach in her work. 

Email: athompson@thefamilycenter.com

Lisa Patrizia, LPC
Licensed Professional Counselor

Lisa Patrizia is a Licensed Professional Counselor who specializes in individual and family therapy with children, adolescents, and adults, as well as parent consultation. Lisa has worked in community and school-based settings providing mental health and outreach services for a broad range of clients. Areas of clinical focus in Lisa’s practice include child behavior concerns, relationship issues, family conflict, anxiety, depression, trauma, grief and loss, and parenting. Lisa earned a B.A. from the University of Virginia, and M.A. and Ed.S. degrees in Community Counseling from James Madison University. Lisa has trained in relational, family systems, object relations, attachment, and trauma-focused approaches, and is committed to ongoing growth and development. Lisa works collaboratively with clients to identify and address current concerns by building on their strengths and resources and supporting greater awareness, expressiveness, connection, and skill development to foster healing and growth in navigating life’s challenges.

Email: lpatrizia@thefamilycenter.com

psychologist, divorce mediator & coaching, psychologist

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