Matthew Hamilton, MD

Background and credentials

Dr. Agarwal is a board-certified adult psychiatrist. He obtained his bachelor's degree in Biological Sciences from the University of California at Irvine and graduated cum laude with his medical degree from the American University of Antigua. Dr. Agarwal completed his psychiatry residency training at the University of Central Florida, where he was elected chief resident.

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Treatment approach

Dr. Agarwal employs a collaborative and patient-centered approach, primarily focusing on medication management in combination with supportive therapy. He is a strong advocate of psychoeducation, believing it to be an integral part of effective psychiatric care. Dr. Agarwal specializes in treating adults experiencing depression, anxiety, PTSD, and insomnia. He is also experienced in managing patients with psychiatric conditions complicated by medical comorbidities such as obesity, hypertension, chronic pain, and diabetes.

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What you can expect in a first visit

Patients visiting Dr. Agarwal for the first time can anticipate a comprehensive evaluation conducted in a collaborative and supportive environment. Dr. Agarwal prioritizes understanding each patient's individual needs and concerns, creating a personalized treatment plan that integrates medication, supportive therapy, and psychoeducation. Follow-up visits typically last about 30 minutes, allowing time to adjust treatment and reinforce therapeutic strategies.

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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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Dr. Pipalia is board-certified in both adult psychiatry and internal medicine. Since graduation from residency, he gained specialized experience in treating veterans with terminal illness, specifically Amyotrophic Lateral Sclerosis (aka Lou Gehrig's Disease), at the VA Medical Center in Portland, OR. He combines both psychotherapy and medication treatment to provide holistic care that addresses not only your mental health but also the parts of your life that surround and are deeply intertwined with your mental health. When more intensive psychotherapy is warranted, he collaborates with an experienced psychotherapist to serve you better. With his experience of internal medicine, he is also comfortable with navigating complex medical issues that may interact with your mental health. Dr. Pipalia is a graduate of St. George's University School of Medicine. He completed a combined Psychiatry & Internal Medicine residency training program at East Carolina University. He went on to complete a fellowship in Clinical Informatics at Oregon Health & Science University, learning how to use modern digital technologies and patient data to improve patient care. His academic activities include a presentation he has given multiple times on Illness Identity, teaching other clinicians how having an illness can change how we perceive our place in the world and how to help patients manage their relationship with illness.

Dr. Tiffany Abtahi is board certified in adult psychiatry and has been in practice for over 6 years. She completed her residency at Icahn School of Medicine, Elmhurst Hospital Center program where she served as Chief Resident in her final year. After completing her residency training, Dr Abtahi worked as a staff psychiatrist in the VA Medical Center focusing on PTSD, depression, and anxiety. Dr. Abtahi has held an academic appointment at the University of UT Southwestern medical school and has spent her professional career supervising/teaching medical students and psychiatry residents. Dr. Abtahi's practice focuses on medication management and providing psychoeducation to her patients. However, if indicated, Dr. Abtahi may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. Abtahi has experience treating a large variety of mental health conditions across a variety of populations. She strongly believes in tailoring treatments through a holistic and patient-centered approach based on individual and multi-faceted histories. Dr. Abtahi looks forward to working with you.

Dr. Fatemeh Safian is a board-certified psychiatrist with experience in outpatient, inpatient, and telepsychiatry settings. She completed her residency at Larkin Community Hospital, caring for a diverse range of patients. Dr. Safian diagnoses and treats a wide variety of conditions, including depression, anxiety, OCD, PTSD, trauma-related disorders, phobias, personality disorders, ADHD, bipolar disorder, postpartum depression, and concerns across all age groups. She is dedicated to creating a safe, supportive space where people feel truly heard—believing good psychiatry starts with listening.

Dr. Safian fosters a warm, respectful, and judgment-free environment where patients can share openly. She takes time to understand each person’s symptoms, story, values, and goals. Medication is just one option; she also considers therapy, lifestyle changes, and other supports. Collaboration and trust are central to her approach, with patients guiding the care decisions.

During the first appointment, Dr. Safian conducts an in-depth, unhurried conversation to explore the patient’s history and goals. Together, they develop a personalized treatment plan that may include medication, therapy referrals, and practical strategies. Ongoing follow-ups provide space to track progress, make adjustments, and ensure the patient feels comfortable and empowered.

Dr. Gloria Odum is a board-certified psychiatrist who treats adult patients. She completed her undergraduate studies at Johns Hopkins University, Baltimore, MD, where she received her Bachelor's degree with Honors in Public Health, then completed her medical degree at The University of Texas at Houston. She completed her residency in psychiatry at the University of Texas Dell Medical School in Austin, where she served as chief resident. Dr. Odum has worked in several clinical, leadership and administrative positions and has been actively involved in teaching and community outreach. She previously worked at The Menninger Clinic, which specializes in psychotherapeutic treatments. Dr. Odum has expertise in treating a wide variety of mental health disorders including depression, anxiety, PTSD, trauma disorders, bipolar disorder, schizophrenia, ADHD, OCD, and addiction. Dr. Odum strongly believes in treating the person and not the diagnosis. Dr. Odum's approach is holistic, collaborative, supportive, and patient-centered. Dr. Odum has been in practice since 2011.

Dr. Thomas O’Brien holds a Bachelor of Science degree from the University of Wisconsin–Madison and earned his medical degree from Midwestern University Chicago College of Osteopathic Medicine. He completed his psychiatry residency at Loyola University Medical Center. Dr. O’Brien has experience practicing across outpatient, PHP, IOP, and inpatient settings.

He strives to create a supportive environment where patients feel heard, respected, and understood. His approach emphasizes a holistic, whole-person method to healing, guided by the patient’s own goals and values. Dr. O’Brien integrates psychotherapy with medication management, drawing on his background in psychodynamic psychopharmacology and acceptance and commitment therapy.

Dr. O’Brien focuses on understanding each patient as a whole to create individualized treatment plans. This begins with a comprehensive history during the initial session to identify biopsychosocial factors. Treatment is then tailored to align with the patient’s unique goals and values, promoting meaningful progress.