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Geoffrey Sinner, MD

Staff Psychiatrist
Languages
English
SPECIALTIES
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Geriatric

Education and training

• Rutgers College, BA

• University of Connecticut School of Medicine Doctor of Medicine, MD

• Dartmouth-Hitchcock Medical Center, Residency

Get to know

Geoffrey Sinner, MD

Background and credentials

Dr. Sinner is board-certified in Psychiatry. He completed his psychiatry residency training at Dartmouth-Hitchcock Medical Center. With over 14 years of experience, he has worked in a variety of settings, including five years in inpatient psychiatry in Vermont, where he served as Medical Director for a state hospital psychiatric unit and taught medical students. He then spent five years working in an outpatient community mental health center in Pennsylvania before transitioning to telepsychiatry, providing care to individuals in Pennsylvania, Florida, and New York.

Treatment approach

Dr. Sinner employs a collaborative, patient-centered approach, tailoring treatment plans to meet each individual's specific needs. His practice integrates pharmacotherapy with cognitive behavioral therapy (CBT) and supportive therapy as needed. He specializes in treating a wide range of psychiatric conditions, including depression, bipolar disorder, anxiety, ADHD, neuropsychiatric disorders, developmental disorders, and personality disorders. His philosophy is to provide personalized care that makes a meaningful impact at different stages of a patient’s life.

What you can expect in a first visit

During the first visit, patients can expect a comprehensive evaluation focused on understanding their mental health concerns, history, and treatment goals. Dr. Sinner takes a compassionate and collaborative approach, working closely with patients to create individualized treatment plans. He ensures that each patient receives a balanced and effective combination of medication management and therapeutic interventions suited to their unique 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.

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Ian Goldberg, MD

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Background and credentials

Dr. Ian Goldberg is a board-certified adult and child/adolescent psychiatrist and a licensed physician in New York state. He has been practicing since 1988 and has extensive experience working with patients in private practice, hospital settings, and community-based mental health programs. His professional career has included work both in and outside of the United States.

Treatment approach

Dr. Goldberg takes an eclectic approach to psychiatric care, integrating various treatment modalities, including psychodynamic perspectives and medication management. His focus is on improving his patients' overall quality of life by tailoring treatment strategies to their unique needs.

What you can expect in a first visit

During the initial visit, patients can expect a comprehensive and individualized evaluation. Dr. Goldberg values collaboration and strives to create a treatment plan that is both effective and adaptable. His experience allows him to approach each case with insight and flexibility, ensuring that patients receive care that is aligned with their personal goals and circumstances.

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.

Douglas Brennan, MD

Staff Psychiatrist

Douglas Brennan, MD, earned his medical degree from the University of Colorado School of Medicine and completed an adult psychiatry residency at Massachusetts General Hospital (MGH) and McLean Hospital. He also completed a forensic psychiatry fellowship at MGH. Dr. Brennan has experience in both outpatient and inpatient settings, supervising residents and mid-level practitioners, and working in emergency and inpatient facilities. He remains on staff at MGH as an instructor for Harvard Medical School and is double-board certified in adult and forensic psychiatry. His outpatient work includes several years treating patients at the Department of Veterans Affairs with post-traumatic stress disorder, depression, and anxiety.

Dr. Brennan enjoys collaborating with patients to understand their goals, set expectations, and provide education on treatment options. He offers medication management evaluations and follow-up visits while working alongside licensed therapists to provide behavioral support as needed.

Dr. Brennan begins by thoroughly reviewing each patient’s history, concerns, and goals in the initial session. He then develops individualized treatment plans tailored to the patient’s objectives, ensuring care aligns with their personal goals and needs.

Madiha Halim, MD

Staff Psychiatrist

Dr. Madiha Halim, MD, has experience practicing psychiatry in both Pakistan and the United States, giving her a well-rounded understanding of mental health across diverse cultures. She earned her medical degree from Army Medical College in Pakistan and completed her psychiatry residency at the University of North Dakota School of Medicine and Health Sciences, where she also served as Chief Resident Physician. In this role, she gained extensive academic and administrative experience while mentoring junior residents and contributing to program development.

Dr. Halim values open communication and strives to create a therapeutic environment rooted in empathy, warmth, and respect. She collaborates with patients to develop individualized treatment plans that integrate cultural, biological, psychological, and social factors. While her primary focus is on medication management, she often incorporates supportive therapy, cognitive behavioral therapy (CBT), dialectical behavior therapy (DBT), and motivational interviewing for a holistic and patient-centered approach.

Dr. Halim begins by taking time to understand each patient’s background, concerns, and goals during the initial session. She emphasizes collaboration, ensuring patients are informed and involved in their treatment decisions. Her process fosters empowerment and partnership, helping patients gain insight, build coping strategies, and achieve long-term mental wellness.

Sharon Kahler, MD

Staff Psychiatrist

Dr. Sharon Kahler is Board Certified in Adult and Child & Adolescent Psychiatry and treats patients of all ages. She has over a decade of experience in both community mental health centers and private practice, working with individuals from diverse backgrounds. She earned her medical degree from New York Medical College, completed Adult Psychiatry Residency at New York-Presbyterian/Weill Cornell, and completed Child and Adolescent Fellowship training at NYU Langone and Bellevue Hospital. Her clinical interests include mood and anxiety disorders, PTSD, and childhood psychiatric disorders.

Dr. Kahler is committed to providing compassionate, high-quality mental health care. She fosters a therapeutic, nonjudgmental environment where patients can openly share their concerns and values. Viewing treatment as a partnership, she encourages patients to play an active role in their care and takes a whole-person approach, considering lifestyle, environmental, and social factors that contribute to healing.

Dr. Kahler begins with a comprehensive assessment to understand each patient’s history, background, and treatment priorities. She develops individualized treatment plans using evidence-based approaches, supporting patients in navigating life’s challenges and finding a path to mental wellness.

Patricia de la Cabada, MD

Staff Psychiatrist

Dr. Patricia de la Cabada earned her medical degree from Ross University School of Medicine and completed her psychiatry residency at the University of Central Florida/HCA Consortium in Gainesville, where she served as outpatient chief resident and received the Excellence in Psychotherapy award. She holds a bachelor’s degree in Anthropology from the University of Florida and has experience in outpatient, inpatient, and consult-liaison psychiatry. Dr. de la Cabada is fluent in Spanish and has special interests in OCD, depression, perinatal depression, bipolar disorder, anxiety, and PTSD.

Dr. de la Cabada approaches care with empathy and compassion, creating a warm, supportive environment. She values strong therapeutic relationships and uses a holistic lens that considers lifestyle and psychosocial factors. Her collaborative, patient-centered style focuses on creating personalized treatment plans.

She begins with a thorough history and discussion of concerns and goals. Treatment plans include medication management, supportive therapy, and lifestyle strategies, with follow-up visits to monitor progress and adapt care as needed.

Matthew Richter, MD

Staff Psychiatrist

Dr. Matthew Richter has experience practicing in outpatient and inpatient settings, as well as with military and confinement populations. He earned his medical degree from the Uniformed Services University of the Health Sciences and completed a psychiatry residency at Walter Reed National Military Medical Center, followed by a forensic psychiatry fellowship at the National Capital Consortium.

Dr. Richter fosters a safe, non-judgmental space where patients can explore their feelings and experiences freely, met with unconditional positive regard. He prioritizes active listening and deep empathy, ensuring each patient feels heard, understood, and valued as a unique individual throughout their treatment journey.

Initial sessions focus on a collaborative exploration of a patient’s history, current challenges, and core values, forming the foundation for a personalized treatment plan. Dr. Richter emphasizes shared decision-making, integrating therapeutic modalities—including medication when appropriate—while honoring patient autonomy and aligning with their vision for well-being.

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Specialties
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Geriatric
States
Pennsylvania
Ohio
Florida
Maryland
Missouri
Languages
English
Takes insurance
Virtual visits
10 years experience