Carroll Brown, PMHNP

Marina Lewis, NP is a Board Certified Adult Psychiatric-Mental Health Nurse Practitioner with over a decade of outpatient experience supporting people through anxiety, depression, trauma, ADHD, and the complexities of modern life. She earned her Master of Science in Nursing from California State University, Long Beach, and completed an Interprofessional Integrative Health Fellowship with the U.S. Department of Veterans Affairs, strengthening her commitment to whole-person, team-based care.

Your first session with Marina is a real conversation—no judgment, no cold clinical distance. She prioritizes understanding your experiences, what brought you here, and what you hope to feel differently. Patients can expect empathy, collaboration, and a safe space to discuss their mental health openly.

Marina believes mental health is inseparable from the rest of life. She considers sleep, nutrition, relationships, identity, and environment alongside symptoms and diagnoses. Whether through therapy support, lifestyle changes, medication, or all combined, she builds individualized treatment plans tailored specifically to each patient’s needs.

Dr. Alexa Hall is a board-certified adult psychiatrist with extensive training and experience across inpatient, partial hospitalization, intensive outpatient, and outpatient psychiatry settings. She earned her medical degree from Saint Louis University School of Medicine and completed her psychiatry residency at Harvard South Shore. Through her clinical work with the Harvard Medical School system and the Boston VA Healthcare System, Dr. Hall developed expertise in caring for diverse patient populations. She has also served as Medical Director for multiple psychiatry practices, overseeing services such as outpatient medication management, Spravato, IV Ketamine, and Transcranial Magnetic Stimulation (TMS). Outside of work, she enjoys cooking and spending time with her family.

Dr. Hall provides a supportive, non-judgmental environment where patients feel heard, respected, and understood. She takes a collaborative approach, working in partnership with patients to set and achieve individualized wellness goals. Her practice emphasizes whole-person care, integrating both mental and physical well-being into each treatment plan.

Dr. Hall begins by listening closely to understand each patient’s history, experiences, and concerns. From there, she collaborates with patients to identify their personal treatment and wellness goals. She develops individualized treatment plans tailored to these goals, focusing on supporting meaningful progress and long-term well-being.

Robynn Cavaliere, PMHNP-BC, is a nationally board-certified Psychiatric Mental Health Nurse Practitioner. She earned her nursing practice degree from the University of San Diego (USD). Her passion for helping others began at the age of 16 when she became an EMT and volunteered with a local emergency unit. Inspired by a strong belief in service to country and a desire to follow in her brothers’ footsteps, she proudly served in the United States Marine Corps.

Robynn’s nursing journey began over two decades ago, driven by a deep calling to care for others. She started her career as an LVN on medical/surgical/telemetry floors, advanced to an RN in the emergency room, and eventually became a psychiatric nurse practitioner.

Her extensive nursing experience spans a wide range of clinical settings and patient populations, shaping her approach to interviewing, assessment, and intervention. Robynn applies the Biopsychosocial Model in every patient encounter, believing that a comprehensive understanding of the whole person leads to more effective treatment recommendations, improved outcomes, and better prognoses.

She is deeply committed to making a positive impact in her patients’ lives and giving back to the nursing profession. Robynn precepts student nurse practitioners in her practice and serves as a Clinical Assistant Professor at USD, where she helps educate the next generation of healthcare providers.

Robynn emphasizes the importance of comprehensive assessments, active listening, and building therapeutic alliances that foster trust and create a safe space for patients to share their thoughts and concerns. She collaborates closely with patients to ensure they feel heard, encourages active participation in their treatment, and provides education to enhance insight and promote behavioral change. Her approach includes supportive psychotherapy and incorporates techniques from Cognitive Behavioral Therapy (CBT), Interpersonal Therapy, Reality Therapy, and Solution-Focused Therapy during medication management visits.

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Gisela Ayub, DNP, PMHNP-BC is a Nationally Certified Psychiatric Nurse Practitioner who received her first master's in nursing from Point Loma Nazarene University (PLNU) and her second Masters of Nursing with emphasis in Psychiatry from Gonzaga University. Gisela also completed her Doctorate in Nursing Practice Degree from PLNU. Gisela’s passion for helping those most in need started when she was just a young girl with a dream of becoming a physician someday. Life did not work the way it was planned for Gisela and she decided to become a nurse. Gisela worked as a registered nurse for over 13 years in different areas of nursing before focusing solely in the area of psychiatry. She has experience working in the areas of medical surgical, medical rehab, cardiac, oncology, labor and delivery and kidney dialysis. But her inspiration to help psychiatric patients was born from seeing the unmet needs of those patients, and the desire to be able to provide more compassionate care. Gisela's desire to become a Psychiatric Nurse Practitioner grew stronger with time, with the only idea in her mind to provide better care for those patients.

During the 1990’s, Gisela served her country proudly and spent 4yrs in the Navy. While attending her first master's in nursing at PLNU, she volunteered at the PLNU city clinic for the uninsured and under-privileged, providing mental health assessments and therapy. After graduating PLNU, Gisela continued providing free therapy to patients at the clinic. In addition, due to her strong background in nursing, Gisela has been able to identify other medical issues that correlate to patients' mental health, and through the use of an extensive questionnaire and ongoing assessment of presenting problems, she has been able to refer patients for additional care. Gisela has also worked as a preceptor, helping other new nurse practitioners understand how to provide the best care possible and communicate with patients.

Gisela believes that it is very important to help the patient feel they are in a safe space, establish a therapeutic environment that builds trust and openness, she listens fully, and uses a comprehensive questionnaire to obtain as much information as possible from the patient, in order to make an accurate diagnosis and select the correct treatment plan. Gisela always works with the collaboration of the patient, as this is the most important part of the treatment plan. Educating patients is also one of her strong suits. Gisela wants to make sure all of her patients are aware of the type of medications they are taking, explore options if needed, and the pros and cons of medications.

Roberta Gordin is a Psychiatric Mental Health Nurse Practitioner (PMHNP) with over 10 years of experience providing mental health care across outpatient, inpatient, and crisis stabilization settings. She earned her Master of Science in Nursing from California State University, Long Beach and her Bachelor of Science in Nursing from California State University, Dominguez Hills. Roberta is committed to delivering evidence-based care in a supportive, compassionate, and judgment-free environment.

Roberta believes in a patient-centered and collaborative approach to care. She values open communication and works closely with patients to ensure they feel heard, respected, and actively involved in their treatment decisions. Her practice emphasizes trust, empathy, and individualized care, recognizing each person’s unique experiences, goals, and strengths.

Roberta takes a holistic approach to treatment, integrating the mind, body, and spiritual connection into comprehensive evaluations. Her medication management style blends traditional psychiatric treatments with alternative options, including vitamins, supplements, and lifestyle modifications such as diet and exercise. She carefully reviews the risks and benefits of all treatment options and collaborates with patients to determine whether medication is appropriate.