OUR CLINICIANS & STAFF
Meet our Clinicians & Staff
At Potomac Psychiatry,
we truly listen.
Choosing the right person to help you with your mental health is no small decision. So what makes us different?
The answer is simple: we truly listen. We take you and your concerns seriously, and we treat you with dignity and respect. We reflect deeply on what you share with us—and take the time to offer guidance, understanding, a listening ear… and a path toward healing. But our compassionate service doesn’t end when your session ends; our office staff is equally dedicated to making sure you feel heard and understood, whether you’re scheduling an appointment or have questions about your care.
Put simply, at Potomac Psychiatry, helping others brings us enormous joy.
Bruce A. Kehr, M.D.
Root Cause Psychiatry; Individual, Couples and Family Psychotherapy
The Founder of Potomac Psychiatry, Dr. Bruce Kehr is a best-selling author, widely-read blogger, and respected thought leader. He is driven to uncover and treat the root causes of his patients' deepest emotional problems.
Guillermo Portillo, M.D.
Adult and Forensic Psychiatry
Dr. Portillo works with patients to understand the biological, psychological, and social/environmental factors that have caused them emotional distress. He treats both English and Spanish-speaking patients and is the medical director of our Forensic Psychiatry group.
Walker Lyerly, IV, M.D.
Child, Adolescent, and Adult Psychiatry
Dr. Lyerly is a gifted psychopharmacologist and psychotherapist. He blends these skills to help both child and adult patients manage a wide range of symptoms and concerns.
John Carr, M.D.
Adult and Addiction Psychiatry
Dr. Carr is board-certified in both general psychiatry and in the subspecialty of addiction psychiatry. He has extensive experience working with patients from a wide variety of backgrounds.
Marlena M. Wu, Psy.D.
Psychotherapy, Psychological Assessments, ADA Accommodations
Dr. Wu is a warm, caring, and empathetic clinical psychologist who approaches each patient with compassion and engages in talk therapy attuned to each individual’s needs.
Krystal M. Lewis, Ph.D.
Child and Adolescent Assessments
and ADA Accommodations
Dr. Lewis provides psychological assessments for behavioral problems in youth—including ADHD, trauma, and depression—and children who may need accommodations.
Paulo J. Negro, M.D., Ph.D.
Addiction Psychiatry and EMDR
Dr. Negro is respected by both colleagues and patients alike for his keen diagnostic skills and open mind. He specializes in addiction treatment and trauma therapy, including EMDR (Eye Movement Desensitization and Reprocessing).
Julie Wendt, MS, LN, CNS
Licensed Clinical Nutritionist; Certified RECODE and Gut Healing Specialist; Root Cause Psychiatry
Julie is a highly gifted and empathetic nutritionist who takes a thoughtful, sophisticated approach to helping patients move toward optimal cellular, gut, and brain health. She is the lead author of the book Integrative Geriatric Nutrition: A Practitioner’s Guide to Dietary Approaches for Older Adults.
Margery Johnson, M.D.
Child, Adolescent, and Young Adult Psychiatry
Dr. Johnson is a child, adolescent, and young adult psychiatrist passionate about working with her patients and their parents to help them achieve their fullest potential.
René Stokes, M.D., M.P.H.
Child, Adolescent, and Adult Psychiatry; Root Cause Psychiatry
Dr. Stokes works with children, adolescents, and adults, taking a comprehensive look at their current strengths and challenges in order to optimize their emotional, behavioral, and interpersonal functioning.
Chuck M. Ng, D.O.
Developmental-Behavioral Pediatrician, Autism Spectrum Disorders
Chuck M. Ng, D.O. is a Developmental-Behavioral Pediatrician who cares for children with special needs. He has been trained to identify and treat a child’s academic, social, medical, and psychological needs.
Our Administrative Team
Chief Operating Officer
Terry works to continuously improve a number of aspects of patient care and levels of patient satisfaction. He oversees daily operations and aspires to keep company morale at its highest possible level. Terry works to enhance the relationships with outside referral sources and also maintains the practice’s online presence.
Director of Programs and Services
Dana is passionate about ensuring patients receive the best quality of care. She coordinates Potomac Psychiatry's programs and services and works closely with administrative and clinical staff. She serves patients and clients with empathy and professionalism.
Elizabeth Palomo Ponce
Patient Experience Manager
Elizabeth believes patience, understanding, and compassion are fundamental to establishing a long-lasting, professional relationship with patients. She provides patients with clear and concise information, while treating them with the dignity and respect they deserve.
Patient Support Representative
Ashley has a strong desire to help others and her encouraging attitude is valued by our patients and all of her colleagues here at Potomac. She challenges herself to understand and effectively communicate all patient requests in order to improve patient care.
Patient Support Representative
Erin is dedicated to providing patients with high quality, attentive customer service. She treats every patient with care, compassion, and positivity. She finds it rewarding to be a part of the Potomac Psychiatry team and help people receive the care they need.
Kat works closely with the Potomac Psychiatry team on blogs, website content, and other materials to convey the heart and soul of the practice in writing.