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Our Team

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Our Team


Kasie M. Cassell, MSN/Ed, WHNP-C, PMHNP-C
Founder/Director of Advanced Practitioners
Specialty: Women’s Health, Perinatal Mood and Anxiety Disorders

Chantilly Office

Kasie M. Cassell is a dual licensed board-certified Women’s Health Nurse Practitioner (WHNP) and Psychiatric Mental Health Nurse Practitioner (PMHNP). She has been with Columbia Associates in Psychiatry since 2011. Over the past 15 years Kasie has worked as a Registered Nurse (RN) and/or Nurse Practitioner (NP) in multiple areas of nursing as well as pioneering and developing the Transcranial Magnetic Stimulation Program for the treatment of depression in our outpatient practice.

After graduating from Penn State University in 2004 with her Bachelor of Science in Nursing (BSN), Kasie went on the join the United States Air Force where she served 4 years as an Active Duty RN and Captain at the United States Air Force Academy. After separating from active duty, in 2012, Kasie received her Master of Science in Nursing (MSN) with a concentration in Nursing Education at George Mason University. She then continued her education by attending the University of Colorado Denver where she received her Women’s Health Nurse Practitioner Post Master’s Certificate in 2014. Kasie also completed her Psychiatric Mental Health Nurse Practitioner Post Master’s Certificate in 2018 at Drexel University.

Kasie is currently running the new division of Columbia Associates called The Perinatal Project. Her focus is on women’s mental health and wellness across the lifespan with a specialty focus on Perinatal Anxiety and Mood Disorders.

Kasie was recognized by The International Nurses Association as a Worldwide Leader in Healthcare and Top Nurse Practitioner in Virginia in 2017.





Gary R. Spivack, MD

Arlington Office

Gary R. Spivack is a Board-certified Child and Adolescent Psychiatrist by the American Board of Neurology and Psychiatry.  Over the past twenty-five years Dr. Spivack has run outpatient programs, day schools, residential treatment centers, therapeutic foster care programs, and inpatient / day hospital programs.  The article he wrote on ADHD vs. Mood Disorders fifteen years ago is still widely credited.  He believes strongly in the biopsychosocial model as the most appropriate for children and adolescents – with the goal of treatment to be to get the child’s and family’s development back on track.

After graduating from Rutgers Medical School, Dr. Spivack went on to complete his residency in Pediatrics and in Psychiatry at Georgetown University.  He completed his fellowship in Child and Adolescent Psychiatry at George Washington University.  Dr. Spivack is a Clinical Associate Professor of Psychiatry at Georgetown University, George Washington University, and James Madison University.

Courtney Graves, MSN, PMHNP-BC
Psychiatric Nurse Practitioner

Chantilly and Arlington Office

Courtney is a board certified Psychiatric Mental Health Nurse Practitioner qualified to evaluate and treat individuals with psychiatric disorders across the lifespan. Originally from Austin, Texas, Courtney obtained her Bachelors in Psychology with distinction from Hendrix College located in Conway, Arkansas in 2012.

She began her medical career as a registered nurse at Rolling Hills Hospital in Franklin, Tennessee where she worked for 2 years while attending Vanderbilt School of Nursing. During this time, she worked on the child and adolescent, older adult/memory care, detox, general psychiatric, and the psychiatric ICU units gaining valuable knowledge concerning the treatment of a wide variety of mental health disorders and age ranges.

After graduating with a Master’s of Science in Nursing in August 2017, she began working as medical provider at Centerstone, an outpatient community mental health clinic in Dickson, Tennessee. During her time as a healthcare provider at Centerstone, she worked with the chronically mentally ill living in rural Tennessee and has become practiced in navigating the complexities of working with low-income and under or uninsured patients. She also has extensive practice in conducting psychiatric evaluations and implementing safe, evidenced-based treatments under the supervision of a psychiatrist and with the help of a multi-disciplinary team.  Courtney believes in and is committed to a holistic approach to patient care, utilizing therapy, exercise, and mindfulness techniques as well as medication to best relieve client ‘s symptoms.

Courtney is excited to join The Perinatal Project with Kasie Cassell in order to help women with psychiatric symptoms navigate treatment throughout all stages of their pregnancy from conception to birth and beyond.

Andrew Cassell
Financial Director

Insurance Claim Specialist

The Perinatal Project is associated with Columbia Associates in Psychiatry that maintains a staff available to treat a full range of mental health issues.

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