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Meet Our Staff of Experts

Board Certified Psychiatric Mental Health Nurse Practitioners

Dr. Sara Koenig-Langston

Dr. Sara L Koenig-Langston, APRN, PMHNP-BC is a highly motivated and professional nurse with strong values and a commitment to evidence-based practice. She holds a Doctorate of Nursing Practice from Maryville University, a Masters Degree in Nursing as a Psychological Mental Health Nurse Practitioner from Maryville University, and a Bachelor of Science in Nursing from the University of Texas at Arlington. She also has an Associates Degree in Nursing from Baptist School of Health Professions and an Associates Degree in Social Science from Shasta College. Dr. Koenig-Langston is currently the owner and manager of her own mental wellness company, Affective Mental Wellness, where she is responsible for diagnosing mental illness, ordering and interpreting laboratory tests, facilitating treatment planning, prescribing medication, providing psychotherapy, and collaborating with assertive community treatment teams. In addition, she is an Adjunct Professor of Nursing at Maryville University of St. Louis, teaching graduate level courses such as Nursing Diagnosis and Management, Psychiatric Mental Health Diagnosis and Management, and is involved in curriculum development and revision for graduate nursing courses. She also works as a mentor and advisor for graduate nursing students. Dr. Koenig-Langston is dedicated to advancing nursing practice through research and teaching, and advocating for the nursing profession through legislative change. In her spare time, she enjoys spending time with her husband and their 5 children, traveling, riding their horse, and practicing Brazilian Jiu Jitsu.


Michelle Murray, APRN

Michelle Murray is a highly experienced psychiatric and mental health professional with a wealth of experience in the field. She holds a Master of Science in Nursing/PMHNP from Northern Kentucky University and is APRN-CNP, PMHNP-BC certified in Texas. She also holds RN licenses in Texas and Ohio and is AHA-BLS certified. Additionally, she is a certified telehealth provider and educator, having completed training at the Center for Telehealth Innovation, Education & Research at Old Dominion University. Michelle has always had a passion for helping others, and this is evident in the many roles she has held throughout her career. Michelle started her nursing career as Home Care RN/Case Manager at the Visiting Nurse Association in Cincinnati. Next, Michelle moved to the hospital setting, working as a RN with St. Elizabeth Medical Center in Northern Kentucky on a medical surgical floor, then as a float pool nurse, and finally as a Care Coordinator. Michelle began her career in the psychiatric and mental health field as a Staff RN at an adolescent inpatient psychiatry unit of Cincinnati Children's Hospital Medical Center, where she worked with children and adolescents, and she began to develop her practice of trauma informed care. She then worked as PRN Staff RN at Sun Behavioral Health, where she cared for patients of all ages including children, adolescents, adults, and geriatric patients. All these roles have helped her gain the knowledge, skills, and experience she has today, and have allowed her to become a well-rounded and experienced professional in the psychiatric and mental health field. Michelle's personal life is also rich and fulfilling; she has a varied background, having grown up in Corpus Christi, Texas, where she developed a deep love for football, specifically the Dallas Cowboys. She later moved to the Cincinnati/Northern Kentucky area, where she spent 22 years raising her family and learned to also love the Cincinnati Bengals and their wonderful fans. She has now returned to Texas to be closer to her family. She is a proud mother of four adult children who are happy and successful, and live all over the country. She is dedicated to her family and has a goal to spend time traveling to visit them. Her experience as a mother has no doubt influenced her decision to pursue a career in the psychiatric and mental health field, where she has been able to make a positive impact on the lives of others. In her free time, Michelle is an avid reader and is always looking for her next book to dive into. She is also a pet lover and is the proud owner of two spoiled cats. She has an interest in quilting and enjoys creating beautiful quilts as a hobby. She also enjoys outdoor walks and exploring nature. Michelle is also a traveler at heart and enjoys visiting new places and experiencing different cultures. In addition to her love for travel, she also enjoys home improvement and has a passion for making her living space comfortable and beautiful. All these hobbies and interests reflect her passion for creativity and self-improvement, both of which are valuable traits in her professional life. Michelle is thrilled to join Affective Mental Wellness and serve the mental health needs of her community with her extensive experience and dedication to her profession. She is excited to be part of the team and to continue providing expert care.

Dallas Henson, MSN, APRN, PMHNP-BC

Dallas Henson, MSN, APRN, PMHNP-BC is a dedicated and compassionate addition to our Affective Mental Wellness team. With over 15 years of healthcare experience, Dallas Henson is excited to bring her expertise to the community she calls home and improve access to mental health care.


Dallas holds a Masters of Science in Nursing from UT Arlington and a Bachelor’s degree in psychology from Texas A&M University. Her unique background blends nursing with psychology, creating a comprehensive approach to mental wellness. Her philosophy revolves around the interconnectedness of mental and physical health. She believes that every aspect of an individual's life matters in achieving well-being. Through collaboration and understanding, Dallas partners with patients to develop a personalized path to mental wellness.


With her extensive knowledge of medications, Dallas guides patients through the complexities of treatment options. She believes in empowering patients to be experts in their bodies, leading to informed decisions that align with each person's unique needs. She is passionate about fostering partnerships and supporting individuals to live their best lives. Her dedication to both patients and the community creates a holistic environment for growth and healing.


When not championing mental wellness, Dallas enjoys spending time outdoors, embracing nature's beauty. She believes that self-care extends beyond the professional realm and is an essential component of overall well-being.


We are honored to have Dallas Henson, MSN, APRN, PMHNP-BC as a valuable member of our team at Affective Mental Wellness. Her holistic approach, expertise in medications, and dedication to community well-being align seamlessly with our mission to provide compassionate and comprehensive mental health care.


Andrew Machado, EMT-B

Andrew is a dedicated and driven member of the Affective Mental Wellness team, bringing his unique background and unwavering passion for healthcare to our community. Born and raised in New Braunfels, Texas, Andrew's strong ties to the area fuel his commitment to making a positive impact on the lives of those around him.

With a solid foundation in healthcare, Andrew completed EMT/Fire School at the Texas Fire Academy, setting the stage for his journey into the medical field. His invaluable experience continued as he served with Canyon Lake Fire/EMS from January 2022 to February 2023, honing his skills and dedication to providing critical care.

Andrew's interests span a wide range, from his love for cooking and reading to his dedication to weightlifting and mastering trades like remodeling and home improvement. This diverse array of passions underscores his drive for continuous growth and learning, qualities that align seamlessly with Affective Mental Wellness's holistic approach.

Driven by his lifelong aspiration to work in the medical field and his unwavering commitment to further education in healthcare, Andrew found his calling with Affective Mental Wellness. Witnessing the profound impact of ketamine therapy firsthand, he was inspired to be part of a team that is at the forefront of pioneering psychiatric medicine. Andrew's dedication to bringing the life-changing potential of new treatments to individuals in need showcases his compassion and dedication to enhancing mental wellness.

We are excited to have Andrew on board, contributing his expertise, dedication, and passion to our team as we continue to lead the way in comprehensive mental health care.

What is a Nurse Practioner 

What is a Nurse Practitioner?

NOT a medical doctor.  A Nurse Practitioner (NP) is, first and foremost, a registered nurse, the most trusted profession in the United States. The NP has completed a master degree from an accredited university and has the training and ability to provide excellent nursing care as well as diagnose and treat a wide variety of disorders.  


  • NP Credibility: NPs are more than just health care providers; they are mentors, educators, researchers and administrators. Their involvement in professional organizations and participation in health policy activities at the local, state, national and international levels helps to advance the role of the NP and ensure that professional standards are maintained.

  • Lower Health Care Costs: By providing high-quality care and counseling, NPs can lower the cost of health care for patients. For example, patients who see NPs as their primary care provider often have fewer emergency room visits, shorter hospital stays and lower medication costs.

  • Patient Satisfaction: With more than 1.06 billion visits made to NPs each year, patients report an extremely high level of satisfaction with the care they receive.

  • Primary Care Shortage Solution: By offering high-quality, cost-effective, patient-centered health care, NPs provide more than 290,000 solutions to the primary care shortage facing America today

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