Diamond Junior, LMHC

Stacy Brown, LPC, is licensed in Texas with 12 years of professional experience supporting individuals, couples, and families. She has extensive background in helping clients navigate stress, anxiety, family conflicts, eating disorders, and anger management. With over five years in Intensive Outpatient programs, she has led group, family, and individual sessions, while her 15 years as a high school counselor reflect her strong connection with young people. Stacy values respect, sensitivity, and compassion in every interaction and is committed to tailoring treatment plans to each patient’s unique needs. She believes seeking help is a courageous step and is dedicated to empowering her clients in their journey toward a more fulfilling life.

During the first session, Stacy takes time to build rapport, introducing herself and creating space to understand each client’s goals. She works collaboratively to establish a clear path forward, focusing on practical therapy skills and strategies that align with each individual’s needs. Stacy especially enjoys working with young professionals in the early stages of their careers, who may feel overwhelmed, anxious, or uncertain about their future. She provides tools and guidance to help them gain clarity, confidence, and resilience.

Stacy often incorporates Dialectical Behavior Therapy (DBT), a structured approach designed to help clients manage intense emotions, improve relationships, and build more meaningful lives. DBT emphasizes skill-building in mindfulness, distress tolerance, emotional regulation, and interpersonal effectiveness. Stacy’s approach combines structure with empathy, offering patients the opportunity to practice new strategies in a supportive environment. Her goal is to help individuals gain insight, develop healthier coping mechanisms, and experience lasting growth.

Matthew Green is a Licensed Mental Health Counselor in the state of New York with over seven years of experience in outpatient settings, both in person and virtual. He earned his master’s degree from St. Bonaventure University and began his career at Olean Counseling Center, where he also completed his internship. Licensed since 2022, Matthew brings compassion and clinical expertise to each session.

Matthew strives to create a warm, supportive, and open space where clients feel safe, heard, and respected. He believes trust is essential to meaningful therapeutic work and values open communication to set clear, collaborative goals. His approach is grounded in mutual respect and genuine connection.

In the first session, Matthew gathers a thorough history to understand the full scope of a client’s experiences and goals. He then creates an individualized treatment plan and focuses initially on coping strategies to support day-to-day functioning. As therapy progresses, the work shifts toward deeper issues and goal achievement.

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Iesha Whitaker is a Licensed Clinical Social Worker that graduated in 2012 from Hunter College School of Social Work. She has been practicing since that time. Ms. Whitaker has worked with many populations including, Women, Men, adults aged 18 and up, homeless population, parents with children in foster care and parents in need support and learning communication skills with teens. Ms. Whitaker has knowledge of working with clients recently discharged from a psychiatric hospital setting as well as the.  hospital discharge planning process, and emergency room care. Her primary areas of focus are helping clients that suffer with Depression, Anxiety, ADHD, Stress, Trauma, Relationship issues, PTSD, Life transitions as well as Emotional Dysregulation. Ms. Whitaker enjoys working closely with clients that struggle with healthy lifestyles, poor decision making, suffering with substance use disorder and people dealing with chronic homelessness, Domestic violence and challenges of daily living. Ms. Whitaker uses treatment modalities such as Cognitive Behavioral therapy, Dialectical Behavior Therapy, Mindfulness, Motivational Interviewing, Narrative Therapy, Supportive Therapy, Solution Focused Therapy, Trauma focused Therapy, Psychodynamic Therapy, Acceptance and Commitment Therapy and many other modalities. Ms. Whitaker has a passion for helping the are less fortunate and have challenges with routine daily activities, basic life needs such as food, housing, education, work stress and chronic medical conditions. Ms. Whitaker is very warm and open, very personable and allows her clients to work at their own pace. Ms. Whitaker enjoys helping clients to gain healthy insight to their conditions and allows clients to create the future they want for themselves.

Working with Ms. Whitaker will be an open, collaborative experience. Ms. Whitaker will help the client create the best version of themselves, while teaching the client to identify concrete obtainable goals.

Ms. Whitaker typical therapeutic process is a somewhat structured and flexible framework that provides empathy, rapport building and using evidence-based practices to provide mental health treatment. She uses a collaborative therapeutic relationship that warmly welcomes the client into therapy, discuss limits of confidentiality as it pertains to self harm or harm to others. She discuss the length of sessions and the frequency of meetings, invite questions from client and describe their role in the treatment process. Provides a safe space where a client can express themselves in an environment open to all cultures, gender identities while helping clients explore their strengths. Clinical assessments by use of standardized tools PHQ-9, GAD-7, and client interview and report. Clinician continues to monitor and track safety and implement Evidence based Interventions such as CBT, DBT, Solution Focused Therapy, Mindfulness, Psychodynamic and Supportive Therapy to provide care. Over time Clinician continues to revisit progress, highlight growth and obtained goals, moving toward termination when appropriate, also providing aftercare and referrals.

Dr. David Guggenheim is an experienced clinical psychologist and health care administrator. He has worked with patients at different stages of life, including children, adolescents, and adults, and he has treated patients living with a wide range of mental health conditions, including anxiety, depression, post-traumatic stress disorder (PTSD), substance use, and attention-deficit hyperactivity disorder. Dr. Guggenheim has specific training in Trauma-Focused Cognitive Behavioral Therapy, Motivational Interviewing, and foundational training in dialectical behavioral therapy. Prior to joining Talkiatry, Dr. Guggenheim served as the Chief Behavioral Health Officer at Callen-Lorde Community Health Center in New York City, specializing in LGBTQ+ health care. In that role, he oversaw teams of providers including psychiatrists, psychologists, and social workers, who collectively provided care to thousands of patients in the New York metropolitan area. While at Callen-Lorde, he also served as co-chair for the behavioral health subcommittee of the Community Health Center Association of New York State; worked as an Adjunct Professor at Post University; and performed volunteer clinical work at the Weill Cornell Center for Human Rights. Before joining Callen-Lorde, Dr. Guggenheim worked as Associate Chief Behavioral Health Officer at Community Health Center, Inc., a federally qualified health center in Connecticut. A recognized expert, Dr. Guggenheim has delivered lectures to audiences ranging from medical schools to corporate executives, and he has been quoted in national media including The Advocate, Yahoo Finance, and Teen Vogue. Dr. Guggenheim has also been honored with an Early Career Achievement Award from the American Psychological Association in 2016. Dr. Guggenheim received his Bachelor of Arts from the University of Connecticut in 2002 and his Doctor of Psychology in Clinical Psychology from the American School of Professional Psychology at Argosy University/Washington, DC in 2009.

Catherine is a graduate from the City University of New York (CUNY) Brooklyn College where she received her Master's Degree in Mental Health Counseling. She is a Licensed Mental Health Counselor experienced in working with adults that struggle with an array of different issues for the past 7 years, both in outpatient and private practice settings. Coupled with her empathic and non-judgmental attitude, she uses a person-centered approach when working with clients. She strives to meet the clients where they are at. Catherine has a passion for helping others reach their full potential, rebuild their confidence, and gain a better insight into themselves through using psychodynamic and CBT interventions. She promotes and encourages "progress over perfection."

Kristina Vaughan, LCSW, is a Licensed Clinical Social Worker based in Houston, Texas. With over six years of experience as a dedicated social worker and more than two years as a practicing therapist, Kristina brings both compassion and expertise to her work. She earned her Master’s Degree in Social Work from the University of Houston in 2016.

 Kristina specializes in Bipolar Disorder and impulse control disorders. She is known for her empathetic yet direct approach, working collaboratively with clients to identify and prioritize their most pressing needs. Her therapeutic style is eclectic, drawing from a range of evidence-based modalities including Cognitive Behavioral Therapy (CBT), Acceptance and Commitment Therapy (ACT), Dialectical Behavior Therapy (DBT), Narrative Therapy, and Brainspotting.

Conditions Treated: Bipolar Disorder, Depression, Anxiety, PTSD, and Grief.

If you feel like you've been watching your life unfold from the sidelines instead of taking the lead as its storyteller, Kristina may be the right therapist to help you reclaim your narrative