Kerry O'Leary, MD

Dr. Sabrina Lefcochilos-Fogelquist earned her bachelor’s degree from Georgetown University and her medical degree from Sidney Kimmel Medical College at Thomas Jefferson University. She completed her psychiatry residency at the Icahn School of Medicine at Mount Sinai Morningside/West in New York City. She has experience in outpatient, inpatient, and emergency psychiatry, treating a broad spectrum of mental health conditions across diverse populations.

Dr. Lefcochilos-Fogelquist values compassionate, holistic care and strives to build long-term, collaborative relationships with her patients. She is particularly drawn to the outpatient setting, where she can engage with the evolving narratives of her patients’ lives. She creates a warm, supportive environment where individuals feel safe, respected, and heard.

Her process begins with a comprehensive evaluation to understand each patient’s history, concerns, and goals. Treatment plans are individualized and may include medication management and psychotherapy. She integrates supportive, cognitive behavioral, psychodynamic, and mindfulness-based techniques to meet patients' evolving needs.

Dr. Wellin is a double board certified psychiatrist specializing in child and adolescent psychiatry and adult psychiatry. She has been in private practice and worked in community clinics for over 44 years. Dr. Wellin's practice focuses on medication management in conjunction with supportive psychotherapy in 30-minute follow-up visits. She encourages a team approach involving psychotherapists, medical doctors, and parents and family when appropriate, to provide holistic care for optimal outcomes. Dr. Wellin received her medical degree from the Albert Einstein College of Medicine, in Bronx, NY. She did her residency in adult psychiatry at the Jacobi Hospital Department of Psychiatry in Bronx, NY. Her fellowship in child and adolescent psychiatry at Columbia University St Luke's-Roosevelt Hospital NYC followed. For the last 5 years, she has been an assistant clinical professor at the Adolescent Health Center at Mt Sinai Hospital NY. During this period she was also a consulting psychiatrist at the McShane Center for Psychological Services at Pace University. Dr. Wellin trained at the Psychoanalytic Institute at NYU. She was certified in hypnosis by NYSEPH in NYC and she has also received training in EMDR. Dr. Wellin worked at a NYC rehab for substance abusers and was the medical director of a private program for children of substance abusers and their families. Her primary current focus is on adolescents and college-aged patients.

Glenn is a Board-Certified Psychiatric Mental Health Nurse Practitioner with nearly 30 years of experience in health care, dedicated to addressing the mental health needs of his community. With a background in both inpatient and outpatient settings, he is committed to helping individuals become the best versions of themselves—no matter where they are in their journey at the time of their first appointment.

Outside of work, Glenn enjoys spending time with his family, biking, and being outdoors.

He takes a patient-centered approach and emphasizes that he, too, is human. Everyone faces challenges at different times and in different ways. Glenn adopts a holistic perspective, recognizing that effective treatment involves understanding how life challenges impact a person as a whole. He is dedicated to providing compassionate, empathetic, and practical care to all his patients.

Glenn engages with patients in a way that makes it easy and natural for them to share their stories. From there, he promotes a shared decision-making approach to develop the most effective treatment plan. His areas of expertise include psychopharmacology, as well as Cognitive Behavioral, Supportive, and Psychodynamic therapies.

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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.

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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.

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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.

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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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Belinda received her undergraduate education at the University of Tulsa and completed her nurse practitioner training at the University of Texas–Arlington, earning a Master of Science in Nursing. She is nationally board-certified in psychiatry across the lifespan and has over a decade of experience working in outpatient, residential, and inpatient care settings. She is skilled in medication management and utilizes therapeutic modalities such as CBT, DBT, ACT, and psychodynamic approaches.

Belinda is a passionate psychiatric nurse practitioner dedicated to continual development and lifelong learning. With over ten years of experience, she spent more than five years working in a residential eating disorders facility. She has evaluated and treated individuals with a wide range of diagnoses, including depression, anxiety, OCD, and PTSD. Belinda believes in addressing the whole person and thrives on helping people find individualized solutions. While she specializes in using medication when necessary to alleviate symptoms, she also incorporates therapeutic techniques into her sessions to help clients discover what works best for them.

She prioritizes the therapeutic relationship and supports patient-centered goals. Belinda empowers her clients to choose options that align with their lives and encourages active engagement in self-care. She is deeply committed to helping individuals improve their quality of life by identifying and addressing areas of struggle, such as depression or grief. Additionally, she supports clients in recognizing and overcoming fears by identifying stressors and developing new coping strategies. Her approach inspires clients to reduce stress and prioritize rest and sleep to enhance overall wellness—body, mind, and soul.

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Dr. Gregory Arthmann recently passed the ABPM Addiction Medicine board exam. Dr. Arthmann is an ABPN board‑certified psychiatrist who received his medical degree from the University of Sint Eustatius. He completed two years of Internal Medicine residency at WellSpan York Hospital in Pennsylvania prior to completing his Psychiatry residency training at East Carolina University in North Carolina.

Dr. Arthmann has over 10 years of experience practicing psychiatry and has treated a broad spectrum of acute and chronic psychiatric disorders. He utilizes a patient-centered, biopsychosocial approach to psychiatry, primarily focusing on psychopharmacological interventions that align with each patient’s unique treatment goals and clinical needs. His practice style centers around medication management with adjunctive supportive therapy tailored to individual needs. Depending on each patient’s circumstances, he may recommend additional support from individual, family, or group counselors and therapists to achieve optimal outcomes.

During an initial visit, patients can expect a thorough and collaborative discussion focused on their symptoms, treatment goals, and clinical needs. Dr. Arthmann will evaluate the patient’s condition to determine appropriate medication interventions and discuss personalized treatment recommendations. Typical follow-up visits are approximately 20–30 minutes in length. Depending on the severity and complexity of a patient’s situation, referral for additional counseling or therapy may be suggested.