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Michael Underriner, MD

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

Education and training

• New York University

• University of Chicago Pritzker School of Medicine

Get to know

Michael Underriner, MD

Dr. Michael Underriner is an adult psychiatrist. His approach to treatment is holistic, taking into account the entire person, and emphasizes the importance of the therapeutic bond to help people reduce suffering and achieve their goals. He is a member of the Gold Humanism Honor Society. Dr. Underriner's practice focuses on a mix of medication management, offered in conjunction with supportive therapy in 30-minute follow-up visits, and insight-oriented psychotherapy offered in weekly 45-minute visits. He works with people struggling with ADHD, depression, anxiety, obsessive-compulsive and related disorders, and difficulties with self-esteem and relationships. Occasionally Dr. Underriner may believe that additional therapy is warranted and recommend a separate therapist to provide the best outcome. He received his medical degree from the University of Chicago Pritzker School of Medicine and completed his residency training at New York University. During training, he gained experience treating patients with various psychiatric illnesses in several different clinics and hospital-based settings. He worked with experts in the field of depression and provided consultations for patients considering transcranial magnetic stimulation. He also published a review article on long-term injectable medications for psychosis. Dr. Underriner has maintained an interest in teaching and remains connected to the psychiatry department at NYU. He has supervised and taught junior residents and medical students. Additionally, he is interested in global health and disparities in access to care and has traveled to Ghana to teach medical students rotating through psychiatry at the university there.

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Hasan Bakhtier, MD

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Dr. Bakhtier is certified in Adult Psychiatry by the American Board of Psychiatry & Neurology. Dr. Bakhtier has been practicing for over 15 years and has been working in the field of Telemedicine for over 10 years. Dr. Bakhtier has been working to make easy access to mental health treatment for everyone and believes that Telemedicine is a great option for more access to mental health treatment.  After completing residency training and a master’s in public health, Dr. Bakhtier started practicing as a staff Psychiatrist and later promoted to the medical director position. He had the privilege of working as the Chief Resident during his residency training and worked with a diverse population, treating many people with different types of mental illness at Lincoln medical and mental Health Center in affiliation with Downtown Bronx Medical Associates P.C. and Joan and Sanford I. Weill Medical College of Cornell University.

Although he is focused on medication management, he is also very interested in therapies like Motivational interview, Supportive therapy to include in the treatment plan. He is very grounded in humanistic values. He likes to work very closely with his patients to build a treatment plan, and he believes in listening to patients and believing that the best outcomes are possible only by working together with patients. He will make decisions after consultation with you and with your approval first regarding adding or changing medication.

Dr. Bakhtier will spend at least 60 minutes on the initial visit and then 30mintues for follow-up appointments where he will develop a treatment plan with you and will be very open to listening to your preferences regarding medication management.

Matthew Koller, MD

Staff Psychiatrist

Background and credentials

Dr. Matthew Koller is a board-certified adult psychiatrist who completed his undergraduate training at The University of Texas at Austin. He earned his medical degree from The University of Texas Health Science Center at San Antonio and completed his general adult psychiatry residency at Baylor College of Medicine in Houston, TX, where he served as Chief Resident of Education in his final year of training.

Treatment approach

Dr. Koller believes that understanding a patient fully is essential before treatment begins, emphasizing a collaborative and patient-centered approach to care. His practice is primarily focused on medication management, but he also incorporates supportive therapy and other therapeutic modalities as needed. He may recommend including a therapist in the treatment plan to ensure comprehensive, well-rounded care. He has experience treating a wide range of mental health conditions, including depression, anxiety, insomnia, personality disorders, bipolar disorder, PTSD, and psychotic disorders.

What you can expect in a first visit

During the first visit, patients can expect a thorough and individualized psychiatric evaluation, where Dr. Koller takes the time to understand their symptoms, history, and treatment goals. He prioritizes open communication and shared decision-making, working closely with patients to develop personalized treatment plans. While medication management is the foundation of his approach, he remains flexible and adaptive, incorporating therapy and other interventions as needed to help patients achieve optimal mental health.

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.

Jessica Marz, MD

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Dr. Jessica Marz is a board-certified psychiatrist who completed her undergraduate studies at the University of Florida and earned her medical degree from the Florida State University College of Medicine. She went on to complete her psychiatry residency at the University of Florida College of Medicine Jacksonville. Dr. Marz treats adults experiencing a variety of mental health concerns, including anxiety, depression, PTSD, OCD, ADHD, bipolar disorder, and adjustment-related challenges.

Dr. Marz is a compassionate and thoughtful psychiatrist committed to holistic, patient-centered, evidence-based care. She approaches each individual with warmth and without judgment, fostering a therapeutic environment built on open communication and trust. She believes that strong rapport is essential to achieving meaningful progress in treatment.

Dr. Marz combines medication management with supportive psychotherapy, incorporating cognitive-behavioral techniques and motivational interviewing. She customizes each treatment plan to align with the patient’s personal goals and evolving needs, recognizing that healing is a highly individualized journey.

Syed Hussain, MD

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Dr. Hussain is known for his compassionate, thoughtful approach to psychiatry and his commitment to helping patients feel genuinely seen and supported. He takes pride in getting to know each person as a whole—beyond just symptoms or diagnoses—and works to build on that from the very first session. Originally from New York, Dr. Hussain completed his undergraduate studies at the University of Buffalo, earned his medical degree from St. George’s University, and completed residency training at Northwell Health in New York and Connecticut.

Dr. Hussain treats a wide range of mental health conditions including depression, anxiety, ADHD, PTSD, OCD, bipolar and psychotic disorders. His approach is collaborative and patient-centered, with a strong focus on shared decision-making. Treatment often includes medication management and therapy techniques like cognitive behavioral therapy and motivational interviewing. Sessions are always a judgment-free space where patients feel safe, respected, and empowered.

During an initial visit, Dr. Hussain conducts a thoughtful and collaborative assessment focused on understanding a patient’s symptoms, experiences, and treatment goals. From there, he works closely with each person to develop a personalized plan, including medication options and other therapeutic strategies. His goal is to create a safe, respectful space where patients feel heard, empowered, and supported throughout their care.

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Darcie Farrell, PMHNP

Staff Nurse Practitioner

Darcie Farrell is an ANCC Board Certified Family Psychiatric Nurse Practitioner.  She has worked exclusively in the field of psychiatry during her forty-year nursing career.  She has worked in many care settings, including as a psychiatric Home Health Nurse and as a Certified Case Manager (CCM) in Psychiatry at Blue Cross Blue Shield. During her time at Excellus Blue Cross Blue Shield, she realized the urgent need for psychiatric nurse practitioners, so enrolled in the BSN/MSN program at the University of Rochester, graduating in 2016 with her BSN and in 2018 with her MSN.  She has strong skills and experience in Motivational Interviewing, having worked as a Motivational Counselor for a University of Rochester's Pediatric Research Program.   She has worked for the past seven years as a Nurse Practitioner in Geriatric Outpatient Psychiatry.

Darcie Farrell is a compassionate provider who is client centered. I rely on evidence-based scientific research when determining the best treatment options for clients.  

Darcie Farrell has a very relaxed process for working with patients which allows the client to provide information that is pertinent to their goals for care.  Then, together, we determine which treatment options are likely to be best for the client.

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Specialties
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
States
New York
Virginia
New Jersey
Languages
English
Takes insurance
Virtual visits
5 years experience