Catherine Derys, LMHC

Keesha Barthelemy is a Licensed Mental Health Counselor, and a Credentialed Alcoholism and Substance Abuse Counselor Level-2. She has extensive experience working in the mental health and addictions field with adolescents, emerging adults, adults, and families. Keesha has worked directly with clients of various demographics, living with a variety of mental health conditions. She obtained her Undergraduate degree in Psychology from Hofstra University on Long Island, NY, and her graduate degree from Mercy University in Westchester, NY. Keesha has been practicing for 3 years as a Licensed Mental Health Counselor, focusing on anxiety, mood disorders, addictions, and families. Treatment is tailored to the individual, with a foundation in cognitive-behavioral therapy, rational-emotive behavior Therapy, and mindfulness. Furthermore, Keesha has experience working with individuals seeking Faith-based Therapy, with a focus on Christianity and Catholicism. Keesha's vast clinical background has assisted in her development as a well-rounded counselor. She prides herself on possessing great interpersonal skills, and building therapeutic relationships in an effort to assist with growth, healing, and flourishment.

Dr. Jana McLain is a dedicated mental health professional with over 16 years of experience in education and more than a decade in private practice. She is a Licensed Professional Counselor Supervisor (LPC-S) and a National Certified Counselor (NCC), specializing in individual, group, couples, and crisis counseling, as well as clinical supervision and program development.

Throughout her career, Dr. McLain has held various leadership roles across school districts and clinical settings, demonstrating a strong commitment to mental health advocacy, counselor mentorship, and behavioral intervention. Her extensive background includes serving as a Student Support Counselor, Crisis and Behavior Intervention Counselor, and Adjunct Professor of Counseling, equipping future professionals with essential skills for client care and goal achievement.

Dr. McLain earned her Ph.D. in Counselor Education and a Master’s in Counseling from Sam Houston State University, along with a Bachelor’s in Psychology from the University of Houston. She is known for her expertise in DSM-5 diagnostics, psychoeducation, and multidisciplinary collaboration to support diverse populations across age groups.

If you're feeling stuck, overwhelmed, or simply need a safe place to work through life’s transitions, I am here to walk with you on your journey toward healing and growth. Reach out today to begin the process of reclaiming your peace and wellness.

Dr. McLain believes in a holistic approach that takes into account both the mental and emotional aspects of wellbeing, helping you find lasting strategies for improving your overall quality of life. She operates from a person centered approach to guide you on your healing journey.

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Jennifer Phillips is a Licensed Clinical Social worker who has worked in the mental health field since 2013.  During graduate school, Jennifer completed her internships at the Tuscaloosa County jail, the University of Alabama Student Veterans Center, and the Birmingham Veteran’s Affairs Medical Center in their Health Care for Homeless Veterans program.  Jennifer went to undergraduate and graduate schools in Alabama and moved to Arizona in 2013 to work with the Department of Veterans Affairs to continue working with homeless veterans.  Jennifer also has experience teaching at Pima Community College and is a clinical supervisor for associate level clinicians through the Arizona Board of Behavioral Health Examiners.  

Jennifer’s prior working experience and training has been with adults, homeless veterans, Native Americans, LGBTQIA, women, and individuals in rural or remote areas, providing access to much needed mental health services in provider shortage areas.  She enjoys working with patients who have anxiety, depression, insomnia, mood disorders, and self-esteem issues.  She is trained in geriatrics and especially loves working with adults over the age of 65.  

Jennifer is trained in Cognitive Behavioral Therapy, Cognitive Behavioral Therapy for Insomnia, Dialectical Behavioral Therapy, Mind-Body Approach, Mindfulness-Based Therapy, and Prolonged Grief Disorder (where the patient is experiencing grief for at least 12 months).  As she is trained in several different treatment modalities, Jennifer can customize therapy to meet everyone’s needs.

Huong "Claire" Phan is a licensed mental health counselor at the New York State Education Department Office of the Professions and a licensed professional counselor at the Texas State Board of Examiners of Professional Counselors. Claire completed her Master's in Mental Health Counseling at Brooklyn College, City University of New York. Claire has been practicing for 5 years as a licensed therapist providing counseling for mood disorders, obsessive compulsive disorder, prolonged grief disorder, adjustment disorders, women's issues, and also helping clients navigate relationship difficulties and other challenges. Claire completed her clinical internship and worked as a therapist at the Institute for Human Identity, one of the first psychotherapy centers in New York to provide LGBTQ+ affirmative psychotherapy. Claire is passionate about serving the LGBTQ+ community and providing a safe space for her clients regardless of differences in gender identity, expression, sexual orientation, race, and culture. Claire practices with a holistic approach that incorporates cognitive behavioral, dialectical behavioral, and mindfulness-based therapy techniques to help clients gain awareness, practice acceptance, and foster resiliency. Each of these therapy modalities requires active participation from the client to connect mind with body, intent with action so that healthier patterns can emerge.

Quentina Farrell, LCSW, has extensive experience working with adults in inpatient and outpatient mental health and substance use settings, as well as in residential treatment for eating disorders. She earned her Bachelor’s in Social Work from Augusta University and her Master’s in Social Work from Barry University.

Quentina creates a safe, nonjudgmental environment where patients are heard and validated, without needing to apologize for their pain or emotions. Her therapeutic approach is collaborative: you actively work together to achieve your mental health goals, with progress reflecting the effort you put in.

She begins by understanding your personal history to see how past experiences shape current behaviors and perspectives. Initial sessions focus on setting goals and identifying obstacles, followed by working together to overcome challenges and achieve those goals. This space encourages patients to express themselves authentically.

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.