Maria-Anne Duncan, LCSW

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Carly Frix-Rhyne, LPC

Staff Therapist, Clinical Lead

Carly Frix-Rhyne is a Licensed Professional Counselor (LPC), in both Texas and Arkansas, who has extensive experience working in the mental health field. She has worked directly with clients of various demographics, living with a variety of mental health conditions. Carly attended undergraduate and graduate school in her hometown of Texarkana, Texas at Texas A&M University - Texarkana. She completed her practicum and internship working as a therapist in therapeutic foster care, with children, teens, foster parents, and biological families. Carly has been practicing for 7 years as a LPC, focusing on individuals working to cope with trauma, stressful life events, anxiety, depression, and issues coping with and communicating their own needs. Carly has worked for community mental health agencies, non-profit agencies, and private practice organizations. Much of Carly's past work involves providing therapy services to children, teens, and adults who survived abuse/trauma. Carly enjoys working with clients of all ages and with a variety of different presenting mental health needs. She uses different techniques including cognitive behavioral approaches and attachment-based approaches, while maintaining a person-centered theoretical orientation with all clients. Carly utilizes a range of therapeutic tools in hopes of providing clients with practical skills they can begin using immediately. She believes in meeting clients exactly where they are and helping them understand their own needs.

Leslie Sullivan, LMHC

Staff Licensed Mental Health Counselor

Leslie Sullivan is a Licensed Mental Health Counselor with 15 years of counseling experience. Leslie received her B. A. in Psychology from Boston University and continued her education at Fordham University where she received her M. S. Ed. in Counseling. Leslie began her career in community mental health services helping the most vulnerable New Yorkers rebuild their lives after a diagnosis of serious mental illnesses. Leslie's other focus is private practice where she works with individuals in need of support for depression, anxiety, adjustment disorders, addiction, and general life stressors. Leslie's focus of treatment is a person-centered approach utilizing Cognitive Behavioral techniques. Leslie has trained with Dr. Christopher Shea in the "Chronological Assessment of Suicide Events (CASE Approach)". She is also trained in SafeTalk Suicide Awareness and Commitment To Living: Understanding and Responding to Suicide Risk. Leslie is certified in Integrated Mental Health/Addictions Treatment Training (IMHATT). Leslie believes that talk therapy in conjunction with medication therapy can have a very successful outcome for those seeking mental health counseling.

LaTria Rogers, LCPC

Staff Therapist

LaTria Rogers is a proud graduate of Bowie State University. She earned a bachelor’s degree in psychology from Bowie State University in 2003, and in 2008, obtained her master’s degree in counseling psychology. She became a mental health therapist for the state of Maryland and later license in Washington DC. LaTria worked for DC Department of Correction/Unity Healthcare as a Lead Therapist and currently work as a Lead Mental Health Therapist for Prince Geroges's County Public Schools. LaTria firmly believes that her views on behavioral and mental health will provided an positive impact on the community.

The pandemic has produced many behaviors in adults as while as children/youth. Our youngest and most vulnerable have suffered the most. As a result, we have seen an uptake in areas like crime, lack of employment, public safety, education, social behaviors, politics, and overall well-being. LaTria feels as a community we need to listen and pay attention to what's happening. LaTria can relate as a mother of a teen and toddler, she understands how the school and community need to provide as many services as they can to children and youth.

As a therapist LaTria prefers to meet people where they are in the treatment process. LaTria leads with cognitive behavioral therapy and person-centered approach. LaTria enjoys helping people become mentally healthy and live a holistic lifestyle.

Sarita Sharma, MD

Staff Psychiatrist

Dr. Sarita Sharma is a board-certified adult psychiatrist dedicated to providing personalized psychiatric treatment that addresses the mind, body, and spirit for optimized health and healing. Born and raised in Toronto, Ontario, she earned her medical degree from Avalon University School of Medicine in Curacao and completed her residency at Southern Illinois University in Springfield, Illinois. Dr. Sharma has extensive experience working with underserved patients from diverse backgrounds and with varying severities of psychiatric disorders. She has a genuine interest in treating mood and anxiety disorders like depression and anxiety. She views medication as one of many tools to aid patients, emphasizing the importance of therapy and lifestyle changes aligned with each patient's goals. Believing in a holistic approach, she incorporates mindfulness techniques, lifestyle optimization (sleep, diet, movement), Dialectical Behavioral Therapy (DBT), Cognitive Behavioral Therapy (CBT), and Acceptance and Commitment Therapy (ACT) to target the root causes of unease. She enjoys helping patients navigate meaning and purpose, relationship dynamics, and self-image. With a sincere, direct, and practical approach, Dr. Sharma values empathy and understanding as vital components of effective care. In her free time, she enjoys spontaneous adventures, connecting with fellow human beings, and just being in nature. She is committed to helping you achieve a balanced, fulfilling life.

Kimberly Taylor, LPC

Staff Therapist

Kimberly Taylor is a Licensed Professional Counselor with an eclectic background who serves clients with a heart-centered focus. Kimberly completed her undergraduate degree in Spanish Literature and Teaching at the University of Michigan-Ann Arbor. Her graduate degree in Counseling is from Wayne State University in Detroit. She was employed for a combined 15 years as a Spanish language teacher and guidance counselor. Kimberly has counseled in a variety of settings, such as schools, substance use facilities, community mental health, refugee camps, private practice, telehealth and urban federally qualified health centers. Over the last 13 years, she has helped many adolescents and adults who struggle with issues related to trauma, OCD, depression, anxiety, codependency, womanhood, domestic violence, cultural identity, sexuality and post-modern work-life imbalance. Kimberly utilizes a mixture of Eye Movement Desensitization and Reprocessing (EMDR), ERP (Exposure Response and Prevention), Dialectical Behavioral Therapy (DBT), Mindfulness, Cognitive Behavioral Therapy (CBT), Internal Family Systems (IFS) and holistic practices to create a unique healing experience for the client.

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.

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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.

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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.

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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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Frank Miller, LPC

Staff Therapist

Frank Miller is a Licensed Professional Counselor with years of experience in a variety of mental health settings. Frank has worked in hospitals, community mental health care, a treatment center for clients struggling with co-occurring mental health and substance use disorders, as well as providing individual outpatient therapy to a wide variety of clients.

Frank attended graduate school at Midwestern State University in Wichita Falls, TX, while working in the mental health field, earning a Masters degree in their Clinical Mental Health Counseling Program in 2019. Frank has provided individualized, client-focused therapy for adults and adolescents since that time, helping others to find purpose and meaning in their lives.

Frank utilizes a combination of Cognitive Behavioral Therapy, Dialectical Behavior Therapy, and Reality Therapy, depending on the client’s needs. Frank believes that we can all benefit from eliminating distorted thinking leading to negativity and self-defeat, and becoming more emotionally regulated, stress tolerant, and mindful, putting us back into the driver’s seat of our daily lives. We may then achieve the freedom to positively fulfill our needs, pursue our goals, and feel confident in our journey towards balance and peace of mind.

Suzann Gordon, PMHNP

Staff Nurse Practitioner

Dr. Suzann Gordon is a board certified psychiatric mental health nurse practitioner who graduated with her Doctor in Nursing Practice from the University of Nevada Reno. Her years of experience in the mental health field began when she became a behavioral health counselor working with adolescents, then as a psychiatric nurse working with patients across the life span. She's worked in various healthcare settings including pediatric and adolescent residential treatment, acute inpatient care and outpatient as a nurse case manager on the Assertive Community Treatment (ACT) Team for the state hospital.

Since Dr. Gordon has become a psychiatric mental health nurse practitioner, she has worked in community health clinics providing both psychiatric medication management and medication-assisted treatment to patients. She has treated patients with various diagnoses including anxiety, depression, post-traumatic stress disorders, obsessive compulsive disorders, bipolar disorders, schizoaffective disorders, schizophrenias, alcohol abuse disorder and substance use disorders.

As a nurse practitioner, she believes in focusing on patient-centered care, providing a holistic approach to patient management and having a collaborative approach to mental health treatment. She uses supportive psychotherapy and at times cognitive behavioral therapy to help her patients change their thoughts and behaviors in managing their stressors.

Jabari Jones, MD

Staff Psychiatrist

Dr. Jabari Jones is a Board-Certified Psychiatrist and an Emotional Health Consultant who has worked extensively with individuals and groups in both the public and private sectors for over a decade. His areas of focus are anxiety, depression, lifecycle-issues, and trauma. Dr. Jones has an interest in Positive Psychology -- a field of study dedicated to human well-being and flourishing. In addition to offering traditional care (Medication and psychotherapy), he also helps patients implement evidence-based interventions such as physical exercise, journaling, and meditation into their lifestyle to help them achieve their unique goals.

Rania Elkhatib, MD

Staff Psychiatrist

Dr. Rania Elkhatib is a board-certified general psychiatrist with extensive experience in clinical care, teaching, and research. She earned her medical degree from the University of Texas Medical Branch in Galveston and completed her psychiatry residency at UTHealth Science Center in Houston, where she later served as an Assistant Clinical Professor. During that appointment, Dr. Elkhatib was heavily involved in medical education and has developed courses in cultural psychiatry and psychiatry boot camps for medical students.

Dr. Elkhatib specializes in treating a wide range of psychiatric conditions, including Major Depressive Disorder, Anxiety Disorders, Bipolar Disorder, OCD, ADHD, and PTSD. Dr. Elkhatib focuses on evidence-based medication management but will also incorporate supportive therapy and cognitive-behavioral techniques to optimize treatment management and patient’s wellness. She is fluent in Arabic and English and has a strong interest in working with diverse patient populations.

Dr. Elkhatib has a holistic approach with focus on medication management while incorporating supportive therapy and cognitive-behavioral techniques to optimize patient wellness.

Sheena Mammen, LCSW

Staff Therapist

Sheena Mammen is a Licensed Clinical Social Worker with seven years of experience in various aspects of mental health. She earned her undergraduate degree from Nyack College and her Master's from Stony Brook, which deepened her understanding of the field. She specializes in treating clients with anxiety, depression, ADHD, interpersonal issues, and perfectionism. Sheena employs culturally sensitive and person-centered approaches to tailor treatments for each individual. Her eclectic therapeutic style is rooted in Cognitive Behavioral Therapy, Dialectical Behavioral Therapy, and Attachment Therapy. She also incorporates communication skills, mindfulness, executive functioning, and social skills training into her sessions, fostering comprehensive support for her clients.

Lisa Hagberg, MD

Staff Psychiatrist

Dr. Lisa Hagberg is a board-certified psychiatrist with 20 years of experience treating patients with a wide range of diagnoses, in particular, depression, anxiety, Bipolar Disorder, and PTSD. Dr. Hagberg brings a holistic approach to her practice, exploring mental health in a multidimensional way and addressing the causes, not just the symptoms, of one's condition. She incorporates supportive and insight-oriented psychotherapy into patient care, although at times she may recommend patients add an individual therapist to the treatment team. Dr. Hagberg grew up in Wisconsin and received her medical degree from the University of Wisconsin Medical School. She completed her training in psychiatry at Harvard Medical School and received additional training in Lacanian psychoanalysis at L'École Freudian du Qu�bec. Her recent work includes positions of medical director of a depression and anxiety disorders unit at McLean Hospital of Harvard Medical School and Chief of Psychiatric Assessment Services at Butler Hospital of Brown Medical School. Dr. Lisa Hagberg is a board-certified psychiatrist who treats patients with a wide range of diagnoses, in particular, depression, anxiety, Bipolar Disorder, and PTSD. She brings a holistic approach to her practice exploring mental health in a multidimensional way, addressing the causes, not just the symptoms of one's condition. She incorporates supportive and insight-oriented psychotherapy into patient care, although at times she may recommend patients add an individual therapist to the treatment team.

Maria-Anne Duncan, LCSW

Education and training

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