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Daniel Weiss, MD

Senior Medical Director
Languages
English
SPECIALTIES
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Perinatal Psychiatry
Phobias
Postpartum Depression

Education and training

• Temple University School of Medicine

• Montefiore Medical Center

• Albert Einstein College of Medicine

Get to know

Daniel Weiss, MD

Dr. Daniel Weiss is a double board-certified psychiatrist in adult and forensic psychiatry. His expertise is in diagnosing and treating psychiatric conditions, including depression and bipolar spectrum disorders, anxiety, stress and adjustment problems, maternal mental health, OCD, and other disorders. In addition, he has extensive experience working with individuals from diverse backgrounds, college and graduate students, creative professionals, and a range of working adults. Through a supportive psychopharmacologic approach, Dr. Weiss strives to provide a comfortable experience in which doctor and patient work to understand the presenting problems, reduce symptoms, and optimize functioning. In addition, Dr. Weiss encourages concurrent therapy and will communicate with that provider in a collaborative care arrangement. Dr. Weiss previously served as an attending psychiatrist on the staff of Montefiore Medical Center and was formerly a faculty member at the Albert Einstein College of Medicine. Before joining Talkiatry, Dr. Weiss spent a decade working at The New School as the university's staff psychiatrist.

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Michelle Harris, PMHNP

Staff Nurse Practitioner

Michelle Harris is a board-certified psychiatric mental health nurse practitioner (PMHNP). She earned her Master of Science in Nursing in the psychiatric mental health track at the University of Saint Joseph and her Bachelor of Science in Nursing from the University of Connecticut. Her training includes psychiatric diagnosis, medication management, cognitive behavioral therapy, and motivational interviewing. With over a decade in psychiatric mental health care and 5+ years as a PMHNP, she has worked in outpatient, private practice, telehealth, inpatient, and homecare settings, treating patients from diverse backgrounds, including neurodivergent, LGBTQ+, BIPOC, and immigrant populations. She has a particular interest in ADHD, depression, anxiety, and OCD.

Michelle values a holistic approach to mental health and believes culturally sensitive care is essential. She strives to create a supportive environment for patients of all backgrounds and sexual orientations, ensuring each person feels understood, respected, and empowered in their care.

Michelle focuses on medication management with supportive therapy as appropriate. Initial sessions involve gathering a detailed patient history and discussing individual concerns. She works collaboratively with each patient to develop a personalized treatment plan, addressing their unique needs and goals.

Fatima Ghandour, MD

Staff Psychiatrist

Dr. Fatima Ghandour is an adult psychiatrist originally from Southeast Michigan. She earned her undergraduate degree at the University of Michigan and her medical degree at Western Michigan University Homer Stryker MD School of Medicine. She completed her psychiatry residency at Authority Health in Detroit, where she was recognized as Resident of the Year in her graduating class. Dr. Ghandour has experience practicing in both outpatient and inpatient settings and has treated a wide range of conditions including depression, anxiety, ADHD, and PTSD.

Dr. Ghandour values open communication and collaboration, working closely with patients to set clear and meaningful treatment goals. She fosters a warm, supportive environment where patients feel heard, respected, and empowered to take an active role in their care. Her empathetic and patient-centered approach helps individuals feel safe sharing their unique experiences and challenges.

Dr. Ghandour begins each relationship with a thorough evaluation, taking time to understand each patient’s history, concerns, and goals. From there, she develops an individualized treatment plan that reflects the patient’s needs and preferences. She combines evidence-based strategies with ongoing dialogue to ensure treatment remains responsive and aligned with each patient’s progress and well-being.

Erica Mark, MD

Staff Psychiatrist

Dr. Erica Mark is a board-certified psychiatrist with experience in both inpatient and outpatient care. She formerly served as a Staff Psychiatrist at a VA Medical Center, where she specialized in the mental health needs of veterans. Dr. Mark earned her B.S. in Biological Sciences, Summa Cum Laude, from Hampton University, received her MD from the University of Texas Medical Branch, and completed her psychiatry residency at Tulane University School of Medicine, serving as Chief Resident in 2017.

Dr. Mark fosters a warm, supportive environment where patients feel heard and respected. She values open communication and works collaboratively to set clear, personalized treatment goals. Deeply committed to service, she has supported underserved and marginalized communities through various nonprofit initiatives.

During initial sessions, Dr. Mark takes time to understand each patient’s history, concerns, and goals. She then creates individualized treatment plans aligned with each patient's unique needs and preferences. Dr. Mark encourages ongoing dialogue to adapt care plans and support long-term progress.

Kasey Broom, MD

Staff Psychiatrist

Dr. Kasey Broom earned her medical degree from the University of South Carolina School of Medicine Greenville and completed general psychiatry residency and an addiction psychiatry fellowship at the Medical University of South Carolina in Charleston. She holds undergraduate and master’s degrees in biomedical engineering. Dr. Broom has experience in telepsychiatry, inpatient, outpatient, and interventional psychiatry settings, with expertise in treating mood, anxiety, trauma-related, attention, and substance use disorders, as well as women’s behavioral health and veteran populations.

Dr. Broom believes it’s a privilege to be part of her patients’ healing journey. She fosters authentic, therapeutic relationships in a supportive, judgment-free space that encourages open, honest communication. Her collaborative style integrates motivational interviewing, supportive psychotherapy, and cognitive behavioral strategies, all while providing evidence-based, patient-centered care that may include medication, therapy, and lifestyle changes.

In the initial session, Dr. Broom focuses on understanding each patient’s history, concerns, and personal goals. She creates individualized treatment plans that align with those goals and emphasizes education to help patients better understand their diagnoses. Through this approach, she empowers individuals to actively participate in their care and take meaningful steps toward recovery.

Gerald Matthews, MD

Staff Psychiatrist

Background and credentials

Dr. Gerald Matthews is a board-certified adult psychiatrist. He earned his medical degree from the University of Louisville School of Medicine in Louisville, KY. Following medical school, he entered active duty service in the U.S. Army, where he completed his psychiatry residency at Tripler Army Medical Center in Honolulu, HI. After completing his training, he practiced as a staff psychiatrist at Fort Hood, TX, fulfilling his service obligation.

Treatment approach

Dr. Matthews specializes in medication management, working primarily with adult patients in an outpatient setting. While his primary focus is pharmacological treatment, he frequently collaborates with therapists to provide comprehensive care when indicated. He has extensive experience treating civilians, active-duty military personnel, and veterans, addressing conditions such as mood and anxiety disorders, psychosis, and trauma-related disorders.

What you can expect in a first visit

During the first visit, patients can expect a thorough psychiatric evaluation where Dr. Matthews takes time to understand their history, symptoms, and treatment goals. He provides a structured yet compassionate approach to care, discussing medication options and potential therapeutic interventions. For patients who may benefit from additional therapy, he collaborates with therapists to ensure a well-rounded treatment plan tailored to each individual's needs.

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.

Xavier Diao, MD

Staff Psychiatrist

Xavier Diao, MD (he/him) is a board-certified psychiatrist. He earned his undergraduate degrees in Psychology and Biological Sciences at the University of Maryland, where he also obtained his medical degree. Dr. Diao completed his psychiatry residency at the Icahn School of Medicine at Mount Sinai, received additional training in child and adolescent psychiatry at Columbia and Cornell, and finished a psychoanalytic fellowship at the New York Psychoanalytic Society & Institute. Prior to joining Talkiatry, he was an Assistant Professor of Clinical Psychiatry at the University of Pennsylvania, where he provided clinical care and teaching along the undergraduate-graduate medical education continuum.

Dr. Diao's therapeutic orientation is informed by psychodynamic, cognitive behavioral, and dialectical behavior modalities. He has expertise in the treatment of a diverse range of mental health conditions, including depression, anxiety, OCD, and PTSD. Dr. Diao uses a developmentally informed and LGBTQ-affirmative approach in his practice, with the aim of enriching meaning and alleviating suffering in the domains of work, play, and love.

Dr. Diao begins each encounter with gentle curiosity, inviting patients to share their stories without fear of judgment. Together, he crafts an individualized treatment plan with the patient that may include medication, psychotherapy, and/or referrals to subspecialty care, always in close collaboration with other members on the treatment team.

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Specialties
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Perinatal Psychiatry
Phobias
Postpartum Depression
States
New York
California
Colorado
Connecticut
New Jersey
Languages
English
Takes insurance
Virtual visits
20 years experience