Jacob Kannarkat , MD

Dr. Mennella is a board-certified adult psychiatrist. Her practice focuses on medication management and supportive therapy. Treatment emphasizes patient education and autonomy. Dr. Mennella is a proponent of shared decision-making and believes this facilitates a strong therapeutic relationship, greater satisfaction with care, and improved clinical outcomes. She completed an undergraduate degree in Information Technology from Purdue University and a master's degree in information systems from DePaul University. She received her medical degree from the University of Toledo College of Medicine and then completed her psychiatry residency at Loyola University Medical Center. Areas of interest include depression, bipolar, anxiety, and PTSD.

Dr. Steve Paschos is a board-certified Psychiatrist at Talkiatry. He attended Loyola University Chicago on the Lake Shore campus, completing a bachelor's degree in science and a Degree in Classical Studies. He then attended Medical School at Rush Medical College in Chicago and completed a 5-year combined Internal Medicine & Psychiatry residency in 2011. Dr. Paschos subsequently completed a 1-year fellowship in Geriatric Medicine at Rush University Medical Center. He has spent the last 12 years fulfilling his passion for integrating Internal Medicine & Psychiatry, working with a diverse range of patients suffering from severe mental illnesses. ‍Dr. Paschos' years of experience have included working at Cook County Health Services � Cermak Health Services at Cook County Department of Corrections with an extremely diverse patient population with varying psychiatric illnesses. He has also worked as an inpatient psychiatric hospitalist and as the director of the Intensive Care Unit at Chicago Behavioral Hospital in Illinois. Dr. Paschos also acted as a medical director of an IOP and established an outpatient psychiatric practice in conjunction with the Intensive Outpatient Program. He has had the opportunity and privilege of treating individuals who suffer from various diagnoses, especially challenging patients who have suffered from integrated or Med-Psych concerns involving primary mood disorders, Bipolar Affective disorders, prior trauma, severe medical problems/diagnoses along with concurrent personality pathology. ‍Dr. Paschos utilizes supportive psychotherapy, brief cognitive behavioral therapy, and at times psychodynamic therapy to address his patients' current complaints and to identify the locus of their symptoms. He believes in utilizing an all-encompassed approach using mindfulness and various psychotherapies along with comprehensive medication management. To quote Hippocrates "Where there is love for the art of medicine there is a love of humanity.”

Justin Stone is a board-certified Psychiatric-Mental Health Nurse Practitioner (PMHNP) with experience in both outpatient and inpatient psychiatric settings, including in-person and telehealth care. He completed his undergraduate and master’s programs at Southern Adventist University in Collegedale, Tennessee. Justin is committed to providing compassionate, patient-centered care that addresses the whole person—mind, body, and environment.

Justin works collaboratively with patients to reach personal goals and support a more fulfilled life. He strives to create an open, judgment-free relationship where patients can be completely themselves. His aim is to provide a safe space for vulnerability without fear of judgment, fostering trust and partnership in the therapeutic process.

Patients can expect a thorough initial evaluation to ensure the correct diagnosis is addressed from the start. Justin prioritizes safety and evidence-based best practices while tailoring treatment plans to individual goals. His approach is focused on developing personalized strategies that help patients achieve meaningful improvements in mental health and overall well-being.

Dr. Ciara Styles is a board-certified adult psychiatrist. Originally from Orlando, Florida, she’s a proud “Double-Gator” completing both her undergraduate and medical school training at the University of Florida. She completed her psychiatric residency at the Medical University of South Carolina, where she also recently finished a fellowship in child and adolescent psychiatry. She plans to complete her child board certification later this year. She enjoys treating patients of diverse and minoritized backgrounds. She has experience related to the special needs of the LGBTQ+ population, pregnant & postpartum people, and neurodivergent youth.

Dr. Styles employs a warm, patient-centered approach to treatment. She connects with patients by “matching their energy,” creating a foundation of trust before exploring difficult conversations. She also values input from loved ones and encourages collaborative appointments to optimize treatment outcomes.

Her process begins by creating a safe, supportive space where patients feel heard and respected. Early sessions focus on building rapport and gaining a clear understanding of the patient’s background, interpersonal relationships, and goals for treatment. From there, she collaborates with each patient to develop a personalized treatment plan aiming to use the lowest amount of medication needed to support and improve overall well-being.

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Background and credentials

Dr. Nilesh Tannu is a board-certified psychiatrist by the American Board of Psychiatry and Neurology. He earned his medical degree from B.J. Medical College in Pune and completed his adult psychiatry residency at the University of Texas Medical School at Houston, where he served as chief resident. During his training, he received awards from the Society of Biological Psychiatry, the American Academy of Addiction Psychiatry, and the American Psychiatric Institute for Research and Education. He has been practicing General Psychiatry and Consultation-Liaison Psychiatry for the past seven years at Texas Medical Center in Houston, Texas. Additionally, he has served as an assistant professor of psychiatry at the Texas Medical Center, working at UT Physicians Clinics and Memorial Hermann Hospital. He is also a member of the Editorial Board for BMC Genomics Journal.

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Treatment approach

Dr. Tannu follows the bio-psycho-social model to provide evidence-based psychopharmacologic treatment. He integrates supportive therapy and cognitive-behavioral therapy (CBT) modalities into his practice to create personalized and comprehensive treatment plans. He is committed to mental health care, education, and helping patients achieve optimal functioning in their personal and professional lives. His clinical expertise includes ADHD, anxiety disorders, depressive disorders, bipolar disorder, psychotic disorders, insomnia, eating disorders, and complex medical comorbidities.

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What you can expect in a first visit

During the first visit, patients can expect a comprehensive assessment where Dr. Tannu takes the time to understand their symptoms, treatment history, and personal goals. He employs a collaborative approach to develop a tailored treatment plan that may include medication management and therapy interventions. His focus is on evidence-based care, ensuring that patients receive treatments that are scientifically backed and aligned with their individual 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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Tamara Lazenby, MD is a board-certified psychiatrist with more than 20 years of clinical and academic experience in emergency mental health, disaster response, and trauma-focused care. She earned her undergraduate degree at George Mason University and completed her medical degree at Eastern Virginia Medical School. After the September 11th attacks, Dr. Lazenby trained in psychiatry at New York Medical College’s Saint Vincent’s Hospital, specializing in emergency and trauma psychiatry.

She previously served as Associate Director of Wellness & Emergency Response Services at New York University’s Student Health Center, leading a team that cared for more than 50,000 global NYU students. Dr. Lazenby also previously served as Staff Psychiatrist and Team Lead for the Combat PTSD Clinical Team at the Hampton VA Medical Center, providing care for veterans with service-related trauma and implementing National VA Standards of Care.

Dr. Lazenby believes healing happens when mind, body, and spirit are aligned. She creates a compassionate and collaborative environment where patients feel deeply heard and empowered in their own care. Her approach blends conventional psychiatric treatment with nutrition, mindfulness, movement, and stress-reduction strategies to support long-term mental wellness.  She values authenticity, open communication, and shared decision-making, empowering patients to build resilience and restore balance in their lives.

She begins with a comprehensive assessment exploring medical, psychological, and lifestyle factors that influence mental health. Treatment plans are personalized and may include psychotherapy, targeted laboratory testing, lifestyle modifications, supplements, and medication when appropriate. Dr. Lazenby works closely with patients to restore balance, resilience, and overall well-being through a truly integrative approach. Regular collaboration and feedback, helping patients heal, grow, and thrive.