Marcia Morris, MD

Dr. Harmeeta Singh was born and raised in St. Louis, MO and is board certified with ABPN (American Board of Psychiatry & Neurology). Dr. Singh has been in practice for 15 years and focuses on an individualized treatment plan, not only using pharmacotherapy when needed, but also implementing insight-oriented, supportive, motivational, and brief psychotherapy. Dr. Singh is a firm believer in combining psychotherapy with medication management when warranted to manage and treat a wide variety of mental health conditions including, but not limited to - Depressive Disorders, Bipolar Disorders, Psychotic Disorders, Anxiety Disorders, Trauma related disorders, Substance use disorders, Personality disorders, Sleep Disorders and Eating Disorders. Her dynamic approach is client focused, involving the client throughout their treatment and care plan, taking careful consideration to the individual's needs and goals. ‍Upon completion of her residency through St. Louis University, St.Louis, Dr. Singh joined her parents' Internal Medicine practice. She learned firsthand that implementing mental health awareness, screening, and education into a primary medically focused practice led to more favorable outcomes. Many mental health conditions can manifest as and/or exacerbate a variety of medical/physical conditions and thereby go undiagnosed and untreated. Dr. Singh has worked closely and coordinated care within the medical field and with other specialists in treating and diagnosing comorbid mental health conditions. While in private practice for over 10 years, she was also an attending and consultant for inpatient mental health care and provided mental health services for residents in various residential care facilities, group homes, and skilled nursing facilities. Over the past 5 years she has consolidated her practice and presently is employed with Compass Health Network in Missouri helping bridge the gap in mental health care by coordinating and providing care to the underserved community.

Lindsey Wittenhagen, LPC, earned a Master of Science in Clinical Psychology from the University of Texas Permian Basin in 2014 and is a Licensed Professional Counselor. She has extensive experience supporting individuals with anxiety, depression, ADHD, self-worth concerns, relationship challenges, stress management, divorce, and life transitions. Lindsey has worked in outpatient settings and as an advocate for trauma survivors, bringing a compassionate and informed perspective to her practice.

Lindsey’s passion is helping clients navigate the ups and downs of life, whether facing overwhelming stress, relational difficulties, or emotional struggles. Her approach is warm, collaborative, and grounded in the belief that healing happens when individuals feel truly seen and heard. Therapy with Lindsey is not about fixing what is “broken” but about fostering self-understanding, exploring what may be keeping someone stuck, and building tools for well-being. She creates a safe, judgment-free space where clients can show up authentically.

Lindsey begins therapy by gaining a thorough understanding of each client’s history, concerns, and goals during the initial session. She then collaborates with clients to develop individualized treatment plans that reflect their unique needs and aspirations. Progress is continually assessed, with goals and approaches adjusted as necessary to ensure growth, resilience, and meaningful change.

Shannon McElhone is a Licensed Mental Health Counselor in New York and Massachusetts. She has over ten years' experience working in the mental health field. Shannon has experience working with children, adolescents, and adults seeking assistance in managing their experiences with depression/mood challenges, anxiety, life transitions, self-esteem, trauma, attention focus, and relationship issues. Shannon utilizes humanistic, person-centered, collaborative, strength based, cognitive behavioral, mindfulness based, solution focused and emotionally focused approaches to therapy while maintaining an open, flexible, creative atmosphere to remain aware of the unique and individual needs of each client. Shannon seeks to create a non-judgmental and safe environment where a caring relationship can be built with her clients to utilize and add to their strengths. Through her practice, a collaboration can bring her clients towards achieving their goals and living the life they desire. Shannon completed her Bachelor of Arts in Human Relations from St. Joseph's College and received her Master of Science in School Counseling and Extended Master of Science in Clinical Mental Health Counseling from Long Island University. Shannon's years of experience include working as a Rehabilitation specialist/therapist at a Pros program, a psychotherapist at an outpatient clinic, a Child and Youth Behavioral Military Family Life counselor working with children and families on a Military base in New York. More recently, Shannon has held a role as a psychotherapist on an online platform that provides virtual therapy and continues to engage in this role at Talkiatry. Shannon's specialties include: Depression, Anxiety, OCD- Obsessive Compulsive Disorder, ADHD, Trauma, Grief & Loss, Stress management, Life transitions, Self-esteem issues and Relationship issues.

Dr. Ann Landowne is Board Certified in Adult, Adolescent, and Child Psychiatry. She has over thirty-five years of experience helping people of all ages cope with a wide range of problems. Dr. Landowne received her medical and psychiatric training at Albert Einstein College of Medicine and advanced training in psychotherapy at the Psychoanalytic Association of New York where she is on the faculty. She focuses on medication management and is holistic in her approach to people and the difficulties they face in life. She has expertise in the treatment of children and adolescents with emotional and behavioral problems, and people struggling with anxiety, depression, bipolar disorder, obsessive-compulsive symptoms, and eating disorders.�

Sonya R. Isler, PMHNP-BC, began her nursing journey over 30 years ago in a state psychiatric hospital in Goldsboro, NC, inspired by the poised nurse she admired at church as a child. Her path includes roles as LPN, RN, BSN, and multiple advanced practice degrees. Sonya has worked in inpatient and outpatient settings, VA clinics, and private practices. She also serves as a preceptor for PMHNP students at her alma mater, the University of North Carolina at Chapel Hill.

Sonya creates a welcoming, respectful space where patients feel safe to communicate openly. She practices active listening and values patient input when setting therapy goals. Her approach is holistic—treating the whole person—and she encourages collaboration, helping patients feel seen, heard, and empowered in their care.

Sonya reviews a patient's history before each session and begins with clear introductions and goal setting. She invites open discussion of concerns and tailors' treatment plans with patient input. She often incorporates CBT, motivational interviewing, and solution-focused therapy into care, promoting growth through supportive, personalized strategies.

Dr. Blackwood was born and raised in Charleston, SC. She completed medical school as well as General Psychiatry Residency and Addiction Psychiatry Fellowship at the Medical University of South Carolina. She went to the College of Charleston for undergraduate studies and double majored in Psychology and Spanish. Dr. Blackwood is the first member of her family to become a physician. Her passion for mental health and her desire to help others are what paved the way for her to become a well-trained and highly motivated psychiatrist.

While working together, Dr. Blackwood will get to know you and will be open to you sharing as much or as little about yourself as you would like. Her goal is to create a safe, judgement-free space where you will feel comfortable and heard. When it comes to mental health, Dr. Blackwood understands that having a strong therapeutic alliance is equally as important as accurate diagnosing and medication management.

Dr. Blackwood strongly believes in a patient-centered model, in which medical decision-making is driven by patient preferences. Her job is to empower patients to make informed decisions regarding their mental health. Dr. Blackwood provides a platform with a no-judgement zone for you to feel safe during your appointments.

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