About Us

Our Mission

At Westside Neurotherapeutics, we can help you conquer depression with Brainsway's Deep Transcranial Magnetic Stimulation (DTMS), a clinically proven, FDA-approved, safe and effective treatment.


Deep TMS for Depression

Deep TMS treatments offer significant improvement for patients suffering from depression, including those who have undergone several cycles of antidepressants without improvement. During each session, a trained TMS technician conducts TMS therapy through a padded helmet placed on the patient's head. TMS sessions are non-invasive and highly effective.A benefit of this treatment method is that it allows each patient to maintain their daily routines as normal, as each session lasts about 20 minutes. Usually, 20 sessions are given over 30 days to achieve a therapeutic response. Patients may continue medications and/or psychotherapy while undergoing TMS therapy.


Accepted Forms of Payment

Currently, we only accept cash payments. As a courtesy to all patients, we will also run a prior authorization and submit claims to insurance. Please ask a staff member about whether you meet the criteria for coverage under your insurance plan.

Our Team


Alexander Bystritsky, M.D., Ph.D.

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Dr. Bystritsky is a board-certified Psychiatrist with a specialty in Anxiety Disorders. He received his M.D. and Ph.D. in psychopharmacology from the First Pavlov State Medical University of St. Petersburg. Over the years as a clinician and researcher, he has gained extensive experience into modern neuroscience practices.  Dr. Bystritsky is currently a Professor-in-Residence with the UCLA Department of Psychiatry, and now serves as a clinical research investigator with CalNeuro Research Group. Dr. Bystritsky evaluates and monitors patient’s progress for dTMS.


Tanya Vapnik Ph.D.

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Dr. Vapnik is a Clinical Psychologist. She earned her Doctorate degree in 1998 from the California Graduate Institute, Los Angles. She is a member of a number of professional organizations including the Obsessive Compulsive Foundation, Anxiety Disorders Association of America, and TMS Society. She currently serves as a Director of Operations at Pacific Institute of Medical Research, as well as a staff Psychologist at UCLA Semel Institute for Neuroscience and Human Behavior, while maintaining her own private practice in Los Angeles. Dr. Vapnik evaluates and monitors patient’s progress for dTMS.


Lilly Rousseva-Stoyanova Ph.D.

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Dr. Rousseva received her doctorate degree from the Institute of Psychology, Bulgarian Academy of Sciences. She has earned her Bachelor’s degree in Psychology, from the Technical University in Germany as well as her Master’s degree in Psychology from the Humboldt University located in Berlin, Germany. Dr. Rousseva-Stoyanova has been working at Westside NeuroTherapeutics as a therapist and a clinical research rater since 2004. Her experience in the field of psychology and patient rapport make her invaluable to her patients.


Mark Herbst, M.D.

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Dr. Herbst is a Board Certified Psychiatrist. He earned his Medical Degree from the UCLA School of Medicine in 1985. He received an added qualification in addiction psychiatry in 2003, which was re-certified in 2006. In addition to having his own practice he is currently an attending physician at Gateways Hospital and an Assistant Clinical Professor of Psychiatry at Keck-USC School of Medicine. Dr. Herbst does initial evaluation and monitoring for dTMS.


Christina Fosteson

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Christina has been working in clinical research for 11 years.  She graduated from the University of California Los Angeles, where she earned her Bachelor’s degree in Physiological Science.  Since 2008, she has worked in research managing clinical trials in various fields including asthma, allergy, cholesterol, diabetes, and mental health. Christina joined our team in 2010 and she continues to grow and learn in the field of clinical trial research as a Senior Research Coordinator.


Brendan Bych

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Brendan is a Deep Transcranial Magnetic Stimulation (TMS) operator at Westside NeuroTherapeutics. He first started working as a TMS operator at the UCLA Anxiety Disorders Clinic in 2016. Brendan earned his Bachelor's degree in Neuroscience from the University of California, Los Angeles. He is currently applying to medical school.