Marc Whaley, MD

Lance Briggs is a dedicated Psychiatric Nurse Practitioner with over a decade of clinical and leadership experience. A graduate of the University of North Dakota, Lance began as a psychiatric RN in acute inpatient settings before becoming a psychiatric RN supervisor in a major Houston hospital while pursuing advanced practice.

After becoming a PMHNP, Lance initially worked with outpatient addiction treatment and severe mental illness populations, later expanding into bariatric psychiatry to support patients preparing for weight-loss surgery. When the COVID-19 pandemic paused bariatric procedures, Lance founded a private practice—Grey Matters Mental Health—in Seattle, which was later sold to a larger healthcare organization in Minnesota. Lance then transitioned into correctional mental health, serving underserved populations within the criminal justice system. Currently, Lance is working at Talkiatry, providing compassionate, high-quality care informed by experience across diverse and challenging environments.

Lance understands that every patient is unique. His approach is grounded in Carl Rogers’ principle of unconditional positive regard, creating a safe, calming space where patients feel heard and valued. Lance takes time to explore developmental history, family background, and major life events, recognizing how past experiences shape present challenges. He aims to understand each symptom fully and offers thoughtful, collaborative treatment options.

Dr. Kathryn Bertacchi is board-certified in both adult and child & adolescent psychiatry. Originally from California, she earned her medical degree from University College Cork in Ireland and completed residency and fellowship at Emory University. She has practiced in varied settings, including developing specialized clinics in eating disorders and gender-affirming care. She is a member of several professional organizations including AACAP, APA, and WPATH.

Dr. Bertacchi fosters an inclusive, nonjudgmental environment where patients feel safe to be themselves. She approaches care with curiosity, compassion, and deep respect for each person’s unique story, aiming to help individuals feel genuinely heard and supported throughout their treatment journey.

In early sessions, Dr. Bertacchi works collaboratively to understand patients' lives, goals, and challenges. While her focus is medication management, she integrates cognitive-behavioral, humanistic, and supportive techniques. She may recommend additional therapy as needed and particularly values working with youth and adults from diverse backgrounds.

Edmund Clark, MD, serves as Chief Psychiatrist at Talkiatry with over 17 years of board-certified experience, including more than 5 years delivering tele-psychiatric care to underserved areas. His career spans 23 years in public service, including leadership roles as Chief of the VA Mental Health Clinics in Jacksonville, FL, and program manager for the University of Florida’s Psychiatry Residency Training Program. A former U.S. Navy psychiatrist, he deployed multiple times, including to Iraq in support of an Army Combat Stress Control clinic, gaining expertise in evidence-based PTSD treatments. Dr. Clark earned his medical degree from the University of Florida and completed his psychiatry residency at the National Naval Medical Center and Walter Reed, serving as chief resident for over 50 military trainees. Before medicine, he served in the U.S. Peace Corps in Kenya.

Dr. Clark values a collaborative approach built on honesty, rapport, and ensuring patients feel heard. He helps patients identify and address multiple factors influencing their mental health, aiming for positive, lasting changes that improve function across life domains. He encourages evidence-based therapies and, when needed, involves other providers to support comprehensive care.

Dr. Clark uses measurement-based tools to assess medication efficacy and guide treatment decisions. He integrates supportive psychotherapy to strengthen coping skills and reduce negative thinking, while incorporating motivational interviewing techniques to promote recovery and self-improvement.

Dr. Molly Fels is a board-certified psychiatrist. She completed her undergraduate education at Barnard College followed by medical school at Rutgers-Robert Wood Johnson Medical School. Dr Fels then completed her psychiatry residency training at Mount Sinai Beth Israel. She has previously worked in the Mount Sinai health system in the psychiatric emergency department and inpatient psychiatric unit. Dr. Fels has an interest in treating patients with a wide variety of psychiatric disorders including depression, anxiety, ADHD, and in working with patients who have experienced trauma. She believes in addressing holistic and lifestyle factors with her patients, including nutrition and sleep, in addition to pharmacology. Dr. Fels combines medication management and supportive psychotherapy to provide well-rounded and comprehensive care to her patients and prioritizes involving patients actively in each step of their psychiatric treatment.

Dr. Thy Vo is a board-certified psychiatrist who specializes in the treatment of adults, adolescents, and children. Dr. Vo approaches patients as whole human beings with the goal of providing a safe therapeutic space that will help patients understand and address their suffering as well as fostering healthy emotional expression and self-awareness. Dr. Vo is collaborative with treatment needs, which may include medication and/or supportive or insight-oriented psychotherapy in 30 or 45 minute follow-up visits. She received a Master's in Global Health Systems and Development at Tulane University and then received her medical degree from the University of Wisconsin-Madison School of Medicine. Afterwards, she completed her adult psychiatry residency and child and adolescent psychiatry fellowship training at Western Psychiatric Hospital of University of Pittsburgh Medical Center. During her training, Dr. Vo has treated patients of all ages and diverse backgrounds with particular interest in immigrants and refugees. She works with people dealing with trauma, mood and anxiety disorders, ADHD, relationship conflicts, life transitions, and existential concerns. She has also received additional training in psychodynamic psychotherapy.

Dr. Morales is a board-certified psychiatrist who is dedicated to the bio-psycho-sociocultural model. This has been reflected in Dr. Morales' pursuit of treating patients suffering from diverse medical and psychiatric conditions, respective psychological mindedness, and varied socio-economic and cultural backgrounds. As an individual, Dr. Morales is fascinated by the human mind, its mechanisms to pursue goals, and the cyclical patterns seen in maladaptation and suffering. He believes in understanding patients' experiences and developing comprehensive treatment plans towards reconciliation. After completing his medical education at the East Carolina Brody School of Medicine, as a Brody Scholar, he subsequently completed psychiatry residency at Jackson Health System/University of Miami. Dr. Morales has had the opportunity to work with a diverse array of patients including high-functioning patients, veterans, trafficking victims, the severely mentally ill of low socio-economic status, and cancer patients across three distinct hospital systems via telemedicine and face-to-face interactions. His experience includes working with patients suffering from post-traumatic stress disorder, adjustment disorder, mood disorders, generalized anxiety disorder, panic disorder, and more. He honors active listening, analytic understanding, supportive psychotherapy techniques, and evidence-based and methodological treatment for patient care and actualization. His goal is to assist patients in navigating short- and long-term goals as well as improved quality of life. As a result, Dr. Morales focuses on medication management, which is offered in conjunction with supportive therapy, which is offered in 1-hour initial and 30-minute follow-up visits. Dr. Morales believes that appropriate patients can benefit from additional exploratory and self-actualizing therapy from other valued and specialized therapists to support targeted goals. He will not hesitate to recommend and promote consultations with therapists for such patients who are ready to pursue. Ultimately, Dr. Morales seeks to understand, validate, and treat patients in a collaborative therapeutic alliance.