Our Team
At Columbia Associates, we are proud to have a team of highly-skilled and compassionate mental health care professionals. Our therapists, psychiatrists, and other professionals are dedicated to providing the best possible care and support to those in need. Each of our professionals has a deep understanding of the latest treatments and approaches in mental health care, and they are committed to staying up-to-date with the latest advancements in the field. Whether you’re seeking therapy for a specific issue, support for a mental health condition, or just looking to improve your overall well-being, our team has the expertise and compassion to help. We invite you to get to know our mental health care professionals and find the one that’s right for you.
Althea Miller-Umar, NP
Advanced Practitioner, Arlington, VA Caring, compassionate, and professional are three words that would describe Althea Miller-Umar. She has been working in mental health for almost…
Bhagwan A. Bahroo, MD
Director of Interventional Medicine, Arlington, VA Dr. B. A. Bahroo, MD is a diplomate of the American Board of Neurology and Psychiatry. He became triple…
Bose Ajayi, NP, PMHNP-BC
Advanced Practitioner, Arlington, VA Bose Ajayi is a psychiatric mental health nurse practitioner (PMHNP) licensed in D.C. and VA, providing care and support to clients…
Brandi Martin
Medical Records and HIPPA Compliance Officer, VA, MD, DC
Brittany Forquignon
Prescriber Support Staff, Arlington, VA Brittany Forquignon is one of our prescriber support staff here at Columbia Associates. She comes to us with…
Casie Young, NP, PMHNP-BC
Advanced Practitioner, Aldie, Arlington, VA Casie Young is a board-certified psychiatric mental health nurse practitioner working for Transformations Care Network. Casie was born and raised…
Chenoa Bishop, LMSW
Counseling and Therapeutic, Alexandria, VA Chenoa Bishop is a licensed master social worker trained to work with adolescents and adults. She is a trauma- and…
Christina Rinderle, MSN/ED, NNP-C, PMHNP-C, PMH-C
Advanced Practitioner, Aldie, VA Christina Rinderle is a dual-licensed board-certified neonatal nurse practitioner (NNP) and psychiatric mental health nurse practitioner (PMHNP). She began working at…
Christina Savoy, MSN, PMHNP-BC
Nurse Practitioner, Arlington, VA Christina Savoy is a board-certified psychiatric nurse practitioner who holds a Master of Science degree in nursing administration and healthcare from…
Christine Pletkova, MD
Psychiatrist, Aldie, VA Dr. Pletkova completed her medical studies at Charles University in Prague. After completing her residency, she was a practicing general surgeon in…
Domonique Thomas
Patient and Site Coordinator, Arlington, VA
Edmond Nsheuko, DNP, CRNP, PMHNP-C, FNP-C
Advanced Practitioner, Arlington, VA Dr. Edmond Nsheuko, DNP is a board-certified nurse practitioner who is qualified to practice in both primary care and psychiatry, where…
Elia Tessera, MSN PMHNP-B
Nurse Practitioner, Aldie, VA Elia Tessera is a board-certified psychiatric mental health nurse practitioner. She received her graduate degree from the George Washington University School…
Frances Hayes
Clinic Director, Aldie, VA Frances Hayes is the clinic director of our Aldie office. She is an eight-year U.S. Army veteran and has over twenty…
Frani Gallagher, LCSW
Adolescent and Adult Individual, Group, and Family Therapy. Sleep Problems, Arlington and Mclean Offices Frani Gallagher is a licensed clinical social worker (LCSW) who has…
Gloria Osuruaka, MD
Medical Director, VA/DC/MD Dr. Gloria Osuruaka is a double board-certified adult and forensic psychiatrist who is passionate about mental health and the role it plays…
Jennifer Street, MSN, PMHNP-BC
Advanced Practitioner, Arlington, VA Jennifer Street is a board-certified psychiatric nurse practitioner and a lifelong resident of the DMV area. She has over six years…
Jessica Del Rossi, PA-C
Physician Assistant, Alexandria, VA Jessica is an NCCPA board-certified physician assistant. She received her B.S. in biology and B.S in sociology from Virginia Commonwealth University…
Kasie Cassell, MSN/ED, PMH-C, WHNP-C, PMHNP
Nurse Practicioner, VA/DC/MD Kasie M. Cassell has dedicated over 10 years of her career working to bring awareness and reduce the stigma around mental health.…
Kelly Anderson
Regional Operations Director, VA/DC/MD Kelly Anderson is our regional operations director. She specializes in strategies harmonizing processes, people, and technology. Kelly holds a bachelor’s degree…
Kelsey Skiljan, PA-C
Medical Resource Director, Aldie, VA Kelsey Skilian is an NCCPA board-certified physician assistant. She received her B.S. in kinesiology and her B.S. in nutrition from…
Kendrah Bullock
Prescriber Support Staff, Arlington, VA Kendrah has a bachelor’s degree in health systems management with a minor in public health. She is passionate about mental…
Keyana Waterman, MS, MFT
Counseling and Therapeutic Clinician, Alexandria, VA Keyana is a registered marriage and family therapist. She has earned a Bachelor of Science in psychology from Delaware…
Laura Moreno
Prescriber Support Staff, Alexandria, VA Laura Moreno works at Columbia Associates in the role of prescriber support staff. Laura has an Associate of…
Lauren Sheehan
Patient and Site Coordinator, Arlington, VA
Linda Ojo, MD
Psychiatrist, Aldie, VA Dr. Ojo is a board-certified psychiatrist trained in adult psychiatry specializing in reproductive psychiatry and women’s mental health. Dr. Ojo has a…
Lindsey Thomas
Patient and Site Coordinator, Aldie, VA
Madeline Suss Bishop, LCSW
Adolescent and Adult Therapist. Ins Therapy and Family. Positive Therapy Approach, Arlington, VA, and Rockville, MD Madeline Suss Bishop, LCSW, has a master’s in social…
Marcia Friend, MHA, MSN, APRN, PMHNP-BC
Advanced Practitioner, Alexandria, VA Over the last two decades, Marcia has serviced a multitude of healthcare environments as a registered nurse in administrative and clinical…
Marybeth Friedman, RN
Nursing Professional, Arlington, VA Marybeth received her B.A., in psychology from the University of Hawaii and her A.D.R.N. from Middlesex Community College, MA. She has…
Meghan Linehan, MSN, PMHNP-BC
Advanced Practitioner, Arlington, VA Meghan is a board-certified psychiatric mental health nurse practitioner (PMHNP) with a passion for helping people. She received a Bachelor of…
Muriel Abrecht
Central Intake Coordinator, Rockville, VA Muriel comes to us with 12 years in optical and eye health. She’s passionate about client experience and is a…
Olga Vasilaci, RN
Nursing Professional, Arlington, VA Olga Vasilachi is a registered nurse who received her degree from Tiraspol Medical College in general medicine in 1985. Over the…
Paris Kearney
Central Intake Coordinator, Alexandria, VA
Patricia Hardy, MSN, APRN, PMHNP-BC
Nurse Practitioner, Aldie, VA Patricia Hardy is a board-certified psychiatric and mental health nurse practitioner who has a special interest in working with adolescents and…
Paul Ruberg, PA-C
Assistant Director of Interventional Services, Arlington and Aldie, VA Paul Ruberg is an NCCPA board-certified physician assistant. He received his B.S. in kinesiology from Pennsylvania…
Pegah Barker, PA-C
Physician Assistant, Arlington, VA Pegah Barker is an NCCPA board-certified PA. She received her Bachelor of Science in psychology from Virginia Commonwealth University in 2014.…
Piyush D. Patel, MD
Psychiatrist Dr. Patel is a graduate of Baroda Medical College in India. After completing two residencies, one in psychiatry at the University of Louisville and…
Rachel Shelton, LMSW
Counseling and Therapeutic Clinician, Rockville, MD Rachel L. Shelton is a licensed therapist here to help clients work through life’s challenges and cope with emotional…
Rebecca Berman, LCSW, MLSP
Group, Individual, and Family Psychotherapy, Arlington Offices Rebecca Berman specializes in treating eating disorders, self-injurious behavior, and self-esteem. She works within the eating disorders treatment…
Sarah
Counseling and Therapeutic Clinician, Alexandria, VA Sarah holds a master’s degree in social work with a focus on whole family mental health care and healing…
Seth Eiland, PA-C
Medical Resource Director, Alexandria, VA Seth B. Eiland, MPAS, PA-C is a board-certified physician assistant. He is originally from Arkansas, where he attended Henderson State…
Sha-Naya Corum
Central Intake Coordinator, Arlington, VA
ShaDonna Andrews
Central Intake Coordinator, Arlington, VA
Sherice Price
Prescriber Support Team, Alexandria, VA
Shirley Berry, MSN, NP-BC
Nurse Practitioner, Arlington, VA and Aldie, VA Shirley is a psychiatric nurse practitioner who has worked in the field of psychiatry for over 30 years.…
Teras Flowers, MSN, PMHNP-BC
Advanced Practitioner, Arlington, VA Teras G. Flowers is a board-certified psychiatric mental health nurse practitioner who is passionate about decreasing the stigma surrounding mental health—one…
Tsige Alemu-Woldemichael, MSN, PMHNP-BC
Tsige is a board-certified psychiatric mental health nurse practitioner licensed in Maryland, DC, and Virginia. She obtained her master’s degree in psychiatric mental health…
Veronique Kom
Nurse Practitioner, Aldie, VA As a nurse practitioner in psychiatry and behavioral health, Veronique is a goal-oriented provider. She is available for in-person and telepsychiatry.…
Walker Lyerly, MD
Child, Adolescent, and Adult Psychiatry, Arlington Office Walker Lyerly is a child and adolescent psychiatrist who provides medication management and individual therapy to children, adolescents,…
Wendy Sittner, LCSW
Licensed Clinical Social Worker, Aldie, VA Wendy Sittner is a licensed clinical social worker who received an M.S.W. from Virginia Commonwealth University’s School of Social…
Xavier Bonilla, PSYD, LPC
Rockville, MD Dr. Bonilla is a graduate of the American School of Professional Psychology in Washington, D.C. with a doctor of psychology degree (PsyD) in…
Yasmin H. Undeland, MSN, PMHNP-C, FNP-C, NNP-C
Advanced Practitioner, Aldie, VA Yasmin is a nurse practitioner that holds board certifications in psychiatric mental health, family practice, and neonatology. She earned her bachelor’s…