MEET OUR STAFF

Joshua Sussal, MD

Psychiatrist

http://doxy.me/drsussal
Joshua Sussal has been in practice serving diverse populations of clients striving to provide mental health services to anyone in need. Dr. Sussal is Board Certified in Child and Adolescents as well as  General Psychiatry and has been a pioneer in neuromodulation through  technologies such as Transcranial Magnetic Stimulation.

Education

• General Psychiatry Residency at Stony Brook University, New York
• Child and Adolescent Fellowship at Children’s National Medical Center, Washington, DC
• Medical Degree from Ross University School of Medicine

He has worked within diverse and challenging settings. Some of these  settings include: the public mental health system, emergency room settings, inpatient facilities, partial hospitalizations, private practice and the judicial system.

He has also owned and operated his own mental health practice for  over 10 years allowing him to understand the impact of entering the  mental health system from the clients challenges in engaging and navigating to the clinicians obstacles in serving while balancing out the administration and management and oversight needed to coordinate to  be able to serve effectively but also efficiently.

Dr. Sussal uses his expertise in psychopharmacology and various  therapeutic modalities to meet each client where they are and to educate  and treat his clients where they want to be. He enjoys being privileged to be allowed to be part of each of his clients journeys and the trust and relationship building which goes along with them.

Dr. Sussal is also the Medical Director of the Greenbrook TMS Rockville, Greenbelt, and Frederick Centers, where he delivers Greenbrook TMS Therapy for patients with depression.

John Dahunsi, DNP, PMHNP-BC, MPH

Psychiatric Nurse Practitioner

doxy.me/jdahunsi

Qualifications:

• Board Certified Registered Nurse Practitioner in Psychiatric Mental Health (PMHNP-BC)
• Doctor of Nursing Practice (DNP)
• Masters of Public Health (MPH)

John’s experience as a registered nurse for over ten years includes teaching, research, psychiatric inpatient units and crisis management. Seeing the overlay of trauma, mental health and substance abuse across all ages, identities, races and religions led him to want to help patients on a deeper level to make change and be present for their change on a more personal level. This was his motivation to go back and earn a Doctorate Degree to become a Psychiatric Nurse Practitioner. He has additional training in addictions to help serve as many patients as possible regardless of their diagnoses or comorbidities.

As a Board Certified Psychiatric Mental Health Nurse Practitioner who treats patients six years and older John enjoys working with individuals and their families to provide the best outcomes for patients mental health and physical health.

He is dedicated to understanding each individual’s life story because who we are shapes who we become. A deep understanding of who patients are allows him to provide tailored, high-quality, evidence based psychiatric therapies to help achieve the goals patients have set for themselves to achieve.

Derek Chamberlain, LCPC

Clinical Director
Primary Therapist

http://doxy.me/dechamberlain
Derek Chamberlain has been in the human services field for over 15 years. Derek is a Licensed Clinical Professional Counselor for the state of Nevada specializing in PTSD in adults and children. His specialties and scope of practice include individual, couples and  family therapy. 

Training & Certifications

Derek’s life‘s journey and experiences have led him to where he is today. Along the way he has learned one of the most important things in therapy is “meeting the person where they are at”. Which leads to his philosophy about psychotherapy; Derek says, “therapy is about the relationship between the therapist and the client, there must be a mutual trust and understanding for any type of therapy to happen. I do not conform myself to any specific type of therapy. I use different modalities of therapy for different people “meeting them where they are “ in their journey. It is my belief as a therapist we must constantly be willing to learn new modalities new treatments and adapt ourselves to the diverse population we serve.”

Shanna O’Connor, CPC-I

Therapist

http://doxy.me/shannaoconnor
Shanna is a Clinical Professional Counselor for the state of Nevada. She utilizes a client-centered, holistic, and multifaceted approach to aid in alleviating mental health symptoms by discovering internal and external factors that influence emotions, cognitions, and behaviors. Her specialties and scope of practice include individual therapy, CBT, substance use disorders, and dual diagnosis in adults ages 18+. 

Modalities & Focus Areas

Shanna is experienced treating children, adolescents, adults, and families in outpatient and inpatient settings offering individual and group therapy, IOP for Adults with substance abuse disorders. She has contributed to research on Neonatal Abstinence Syndrome and the Opioid Epidemic published in -Public Safety, Psychology Today, and Corrections One.  Empowerment, building resilience, and improving self concept are pillars of her treatment philosophy.