Jessica Marz, MD

Dr. George Han is an adult psychiatrist who earned his undergraduate degree in Materials Science and NanoEngineering from Rice University, his medical degree from the University of Texas Southwestern Medical Center, and completed his psychiatry residency training at the University of Mississippi Medical Center. Now based in New York City, Dr. Han brings a broad geographic and cultural perspective, having previously lived in China, Canada, Illinois, California, Texas, and Mississippi.  

Drawing on these diverse experiences, Dr. Han is committed to providing culturally responsive and identity-affirming care, with a particular focus on immigrant communities, LGBTQIA+ individuals, and high-performance professionals. He uses a collaborative, narrative-informed approach that centers each patient’s lived experience and values. His integrative method helps individuals recognize emotional and behavioral patterns shaped by cultural, relational, and systemic factors.  

In clinical practice, Dr. Han combines evidence-based medication management with appropriate psychotherapy techniques and elements of executive coaching. This comprehensive approach supports patients navigating high-pressure environments, helping them achieve greater clarity, resilience, and confidence across both personal and professional domains

Dr. Kamyl Bogan, a board-certified psychiatrist, attended Vanderbilt University for her undergraduate education and earned her medical degree from the Quillen College of Medicine. She completed her psychiatry residency and community fellowship at the University of Florida College of Medicine – Jacksonville. Dr. Bogan was inducted into the Gold Humanism Honor Society in recognition of her compassionate care and was selected as an APA SAMHSA Fellow, where she designed a conference focused on resources for individuals with substance use disorders.

Dr. Bogan strives to create a welcoming and supportive environment for her patients. She listens with empathy and compassion, ensuring that every individual feels heard and safe throughout their care. She is dedicated to practicing with cultural humility and responsiveness, using evidence-based approaches to meet the diverse needs of those she serves.

In initial appointments, Dr. Bogan takes time to explore each patient’s history, primary concerns, and symptoms. Together, they establish treatment goals and collaborate on a personalized plan that may include medication management, therapy, or a combination of both to promote meaningful and sustainable improvement.

Background and credentials    

Dr. Catherine Cashman is triple board-certified by the American Board of  Psychiatry and Neurology in Adult Psychiatry, Child & Adolescent  Psychiatry, and Forensic Psychiatry. She holds two Bachelor’s degrees: one in  Finance from New York University, and another in Biology from the University  of New Orleans. She earned her medical degree from Nova Southeastern  University and completed an Adult Psychiatry residency at LSU Health Sciences  Center in New Orleans. Dr. Cashman subsequently completed two fellowships:  the first in Child & Adolescent Psychiatry at LSU New Orleans, along with  a certification in Infant Mental Health (working with children ages 0–6 years  and their caregivers); the second fellowship was in Forensic Psychiatry at  the University of Rochester and the Rochester Regional Forensic Unit.    

‍

Treatment approach    

Dr. Cashman brings an extensive and specialized skillset to psychiatry,  informed by her triple board-certifications. Her treatment approach  integrates clinical expertise from adult, child and adolescent, and forensic  psychiatry, emphasizing accurate diagnosis, risk assessment, and  evidence-based care. With specialized expertise in forensic psychiatry and  competency assessments, she employs rigorous evaluation methods to accurately  inform treatment planning and risk management, particularly in complex or  legally-involved cases.    

‍

What you can expect in a first visit    

Patients visiting Dr. Cashman for the first time can expect a detailed and  comprehensive psychiatric evaluation. Given her forensic and clinical  experience, initial assessments are thorough, focusing on clear diagnostic  understanding, individualized risk assessment, and appropriate treatment  planning. Patients can anticipate a collaborative, professional, and  structured environment aimed at clarifying diagnoses and addressing their  unique mental health needs effectively.    

‍

Why Talkiatry?    

We’re a virtual mental health practice that makes it easy to find great  care. We combine quality and convenience to help you thrive—faster. Our  providers, like this one, are highly trained experts who specialize in  medication management and collaborate with you on a treatment plan that fits  your needs and comfort level.

Dr. Thomas Crane is a board-certified psychiatrist who practices general adult psychiatry, with a special interest in managing depression, anxiety, OCD, and ADHD. He attended Calvin College for his Bachelor's Degree and Michigan State University College of Human Medicine for his Medical Degree. He then completed his Residency in Psychiatry at Ohio State University.‍After spending six months serving the prison population, he is back to doing what he finds most rewarding, which is one-on-one outpatient psychiatry. Dr. Crane places special emphasis on a triple-pronged approach to treating conditions, using medication, therapy, and lifestyle guidance. He enjoys building a therapeutic relationship with his patients, and he values longer-term continuity of care when appropriate. Dr. Crane recognizes that psychiatric conditions can hinder someone from enjoying their life in a way that they otherwise could, and his focus is on helping his patients obtain more happiness, while reducing frustration/pain.

Dr. Steven Mathew is a trained adult and child and adolescent psychiatrist. He recently completed his child and adolescent psychiatry fellowship at the University of Miami/Jackson Health System, where he served as chief fellow. He completed his general psychiatry residency at Pine Rest Christian Mental Health Services in Grand Rapids, Michigan. Dr. Mathew earned his Doctor of Osteopathic Medicine from the Philadelphia College of Osteopathic Medicine’s Georgia campus, a satellite campus located in the Atlanta metro area. He graduated from the University of Georgia with a Bachelor of Science in Biology and afterwards obtained a Master of Public Health in Health Policy and Management.

Dr. Mathew has had extensive clinical experiences caring for patients across the lifespan in specialty inpatient units, partial hospitalization programs, emergency psychiatry, outpatient clinics, consult liaison psychiatry, and telemedicine. He has clinical expertise in treating depression, anxiety, trauma, OCD, ADHD, and tic disorders.

Dr. Mathew's treatment approach combines evidence-based medication management with supportive therapy, emphasizing empathy, collaboration, and goal-oriented care tailored to each patient and family.

‍

Dr. Seth Flesher is double board-certified in adult psychiatry and addiction medicine.  Dr. Flesher’s practice focuses on medication management of psychiatric illness without the use of controlled substances.  Typically, he offers this in conjunction with supportive or emotionally focused therapy in 30-minute follow-up visits. However, occasionally Dr. Flesher may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome.

Before joining Talkiatry Dr. Flesher was Medical Director of Advanced Psychiatric Services [complex/high profile cases] at Kings County Hospital and Unit Chief of the Covid19 positive unit.  He was also a clinical professor at Downstate Medical College where he was voted educator of the year numerous times by psychiatric residents and medical students.  Dr. Flesher is a graduate of the prestigious combined 6-year BS/MD program at The Sophie Davis School of Biomedical Education.  He did research at the neuropsychiatric branch of the National Institute of Mental Health, completed his psychiatric residency at St. Lukes/Roosevelt Hospital, and he received his master’s degree in public health from Columbia University.

Dr. Flesher believes that psychiatry should start with a thorough assessment to arrive at an accurate diagnosis.  Then a discussion with the patient of the different evidence-based options available.  Followed by shared decision-making to arrive at an effective treatment plan to achieve the goals that the patient identifies as being important.  This should be done in an honest, open, non-judgmental, but realistic environment.  Understanding that the ultimate goal is to get the patient to a position where they will no longer need medication and/or therapy.