• Team Profiles

    Physicians, Clinicians, Therapists, Technicians, Staff

    Craig Clark, MD

    Child, Adolescent and Adult Psychiatrist

    Chief Medical Officer, NNPA

    Craig Clark is a child, adolescent, and adult psychiatrist with nearly thirty years of experience as a clinician. He first attended West Virginia University as a Moore Chemistry Scholar and later Marshall University, from which he ultimately graduated college and medical school Magna Cum Laude.


    Drawn to Vanderbilt by the prospect of working with the famed neuropsychiatrist David Bear, M.D. Dr. Clark relocated to Nashville in 1988. There he completed his post-doctoral training, inclusive of a rotating internship, followed by a residency in adult psychiatry.


    Captivated by the idea of a developmental perspective on human health, and fortunate enough to gain mentorship from the then Chairman of Child Psychiatry Barry Nurcombe, M.D. Dr. Clark ultimately pursued a fellowship in child and adolescent psychiatry.


    Named Chief Fellow in Child Psychiatry his senior year, Dr. Clark developed a passion for teaching. He subsequently served in a supervisory capacity for Vanderbilt Child Fellowship Trainees for many years. He also enjoyed a number of years during which he traveled the country speaking to audiences of primarily fellow physicians on numerous topics in child, adolescent and adult psychiatry both in industry sponsored meetings and CME settings.


    For the more than twenty five years before founding NNPA, Dr. Clark was blessed to work in an invigorating relationship in private practice with his colleagues and friends as a partner at Associated Psychiatrists of Nashville. Between 1993 and 1995 Dr. Clark honed his skills in the most challenging of clinical circumstances, serving as Medical Director for all child and adolescent inpatient and outpatient services at Centennial Medical Center’s Parthenon Pavilion. He was the Tennessee Psychiatric Association’s Public Affairs Representative during the same period.


    Informed by his grandmother’s admonition to “Be the eternal sophomore” (Greek for “the knowledgeable fool”) Dr. Clark remains passionate about life-long learning and personal, as well as professional growth. In this vein he was one of the first child and adolescent psychiatrists in Nashville to offer neuromodulation (both neurofeedback and TMS) to his patients.


    Malcom Gladwell famously asserted mastery typically requires 10,000 hours of disciplined practice. With nearly 70,000 hours logged Dr. Clark still seeks to cultivate a beginner mentality, traveling regularly for continuing education opportunities. He is always on the lookout for any safe, effective treatments or technologies that might better serve his patients.


    When not roaming the halls of NNPA, Dr. Clark can be found spending time with his family, including his wife and co-founder/COO of NNPA Amy Powell Clark, as well as his three incredible sons. You might just also find him admiring art in all forms, or perhaps practicing what he preaches about the link between mental health and physical fitness while grinding out a match on the tennis court.

    Amy Powell Clark, MA; LPE, CCTP

    Psychological Examiner

    Certified Clinical Trauma Professional

    Chief Operating Officer, NNPA

    Amy Powell obtained a Master’s degree in Clinical Psychology from Middle Tennessee State University where she graduated Summa Cum Laude. During her tenure at MTSU, Ms. Powell received honors from her graduate professors, including recognition as the Outstanding Clinical Graduate Student and Outstanding Graduate Teaching Assistant.


    Upon graduation, Ms. Powell began her journey in clinical psychology working for AGAPE as well as at Vanderbilt University Medical Center . While at Vanderbilt Ms. Powell gained intensive experience in early childhood development while conducting comprehensive developmental assessments in the NICU as well as the Treatment and Research Institute for Autism Spectrum Disorders (TRIAD). While at TRIAD she also helped formulate and develop group therapy interventions to address both the delayed social skills of children with ASD as well as the impact of their challenges on the family as a whole. As such, parent training and sibling groups were amongst the work she co-facilitated.


    Since leaving Vanderbilt in 2002, Ms. Powell has been in private practice, first with Associated Psychiatrists of Nashville and now as the co-founder of NNPA. Ms. Powell works primarily with individuals suffering from the psychological and emotional consequences of trauma, OCD/anxiety, ADHD, social skills deficits, and mood disorders.


    A natural teacher, Ms. Powell has served in a supervisory capacity for graduate students from Vanderbilt, Lipscomb, and Trevecca who are completing pre-practicum and practicum-internships in clinical and counseling psychology and has done so for 20-years.


    Ms. Powell is a member of the Tennessee Psychological Association and American Psychological Association. She is a past board member of the Autism Society of Middle Tennessee.


    For Ms. Powell, witnessing the bravery of each individual who embarks on the journey to well-being and healing is truly an honor. She is inspired daily by the resilience of those with whom she works.


    While recognized foremost for her talents in psychotherapy, Ms. Powell is also a gifted figurative and portrait sculptor whose work has been recognized both locally and nationally. She was twice chosen for inclusion in the Scottsdale Artist's School "Best and Brightest" competition.


    In keeping with the NNPA philosophy of the inextricable link between physical and mental health, Amy is often found in her hours away form the office cultivating cardiovascular fitness by chasing her sons about Nashville and beyond. She also enjoys busting a move during the "dance party" breaks in weekly group therapy.

    Tim Caldwell, MS

    Director of Client Services and Business Development

    Practice Manager, NNPA

    Tim Caldwell is our Director of Client Services and Business Development at NNPA. Tim manages referrals and coordinates Neurofeedback and Transcranial Magnetic Stimulation services.


    Before joining NNPA, Tim was at Vanderbilt Psychiatric Hospital as the Coordinator of the Partial Hospitalization Program and then at HCA as Director of Outpatient Services and Inpatient Psychiatric Admissions. Tim has extensive experience in crisis management, assessment and referral.


    Tim’s interests extend to athletic performance, art and movies. He may also be found on the tennis courts as he is an accomplished player and coach.

    Loran Kelly, Ph.D.

    Clinical Psychologist

    Loran Kelly is a licensed clinical psychologist with health service provider designation in the state of Tennessee. Dr. Kelly received her undergraduate degree from the University of Arizona and masters and doctoral degrees from Vanderbilt University. She completed her clinical internship at Carle Foundation Hospital in Champaign, Illinois. Her clinical practice is grounded in evidence-based treatment, namely Cognitive Behavioral Therapy (CBT), Exposure and Response Prevention (ERP), and Dialectical Behavior Therapy (DBT).


    Dr. Kelly is passionate about working with children, adolescents, and adults affected by obsessive-compulsive disorder (OCD) and anxiety disorders (generalized anxiety, social anxiety, separation anxiety, panic, phobias, selective mutism), and has extensive training in these areas. She worked as a PRN Behavioral Specialist at Rogers Behavioral Health, an intensive treatment facility that treats individuals with OCD, anxiety, and depression. Dr. Kelly also treats a broader range of presenting concerns using evidence-based approaches, including depression, tics, OC-spectrum disorders (body dysmorphia, skin picking, hair pulling), adjustment concerns, social difficulties, emotion dysregulation, and disruptive behavior. Finally, Dr. Kelly has experience conducting psychological and psychoeducational assessments to address diagnostic questions of psychopathology, disruptive behavior, learning disabilities, and giftedness.


    Part of Dr. Kelly’s training also included work with Ms. Powell and Dr. Clark themselves! She completed several graduate-level practicum placements assisting with Ms. Powell's and Dr. Clark’s child and adolescent therapy groups. She also conducted neuro-feedback sessions with the team.


    As a therapist, Dr. Kelly believes establishing rapport is the cornerstone of all effective therapy, and uses warmth, humor, and kindness to cultivate this in the therapeutic relationship. She uses this rapport to help clients get in touch with their own potential and do things they thought they could not do!



    Kara Darretta, DNP, PMHNP

    Doctor of Nursing Practice, Psychiatric Mental Health Nurse Practioner

    Dr. Kara Darretta is a Psychiatric Mental Health Nurse Practitioner and is board certified to treat clients across the lifespan. She obtained a Bachelor of Science in Kinesiology in 2016 from Indiana University, where she joined Phi Eta Sigma/Alpha Lambda Delta National Honors Societies. She obtained a Bachelor of Science in Nursing in 2017 from Valparaiso University. She then completed her Doctor of Nursing Practice from the University of Tennessee Health Science Center, where she was inducted into the Sigma Theta Tau International Honors Society of Nursing.


    During Dr. Darretta's nursing career, she has worked as a Psychiatric Nurse for both Vanderbilt Psychiatric Hospital and Parthenon Pavilion. While in school, completing her clinical hours, she worked alongside Psychiatric Nurse Practitioners and Psychiatrists in both inpatient and outpatient settings. As a result, Kara has knowledge of both acute stabilization management as well as maintaining stabilization of individuals through medication management and psychotherapy. Her experience spans anxiety and mood disorders, ADHD, PTSD, thought disorders, substance abuse, and personality disorders.


    Dr. Darretta believes in treating the individual as a whole by utilizing medication management when appropriate while incorporating psychotherapy. She strives to meet individuals where they are and help them to meet their goals through an individualized treatment plan. She believes a strong therapeutic relationship is the foundation for effective treatment. She brings warmth, empathy, and humor with strong clinical decision-making skills to the therapeutic relationship. Kara works in tandem, under Dr. Clark’s supervision, and in collaboration with the whole NNPA team. 


    When not at NNPA, she enjoys rooting for the Philadelphia Phillies, reading, and spending time with her husband and two mini goldendoodles.

    Elizabeth Mugnano

    Psychiatric Nurse Practitioner

    Elizabeth Mugnano is a Psychiatric Mental Health Nurse Practitioner and is board certified to treat clients across the lifespan. She obtained a Bachelor's degree in Psychology from Indiana University, where she graduated Magna Cum Laude and joined the Phi Beta Kappa Honors Society. She then completed her Master's of Science in Nursing from Vanderbilt University.


    Upon graduation, Elizabeth began working at Centerstone in Nashville, TN. Practicing in a community mental health setting for over 5.5 years allowed her to work with a diverse client base. She has experience treating myriad clinical presentations including mood, anxiety, PTSD, substance abuse, thought disorders, personality disorders, and ADHD.


    As a medication provider, she strives to work with clients to prescribe appropriate and evidence-based medication to best relieve psychiatric symptoms. She also believes deeply that holistic care should coincide with medication treatment, so she promotes therapy and enjoys working with clients to establish healthy lifestyle changes. Ms. Mugnano works in tandem, and under the supervision of Dr. Clark.


    Elizabeth is passionate about neuroscience and psychoeducation. She truly believes that with knowledge comes power. She brings warmth and compassion along with a strong clinical acumen in to the therapeutic relationship. Her conversational and team-based approach helps establish rapport and give clients agency as they walk through their wellness journey.


    This Nashville native also enjoys exploring her city, cooking, traveling, theater, and music.


    She is thrilled to join the NNPA team and looks forward to coordinating with the incredible clinicians and staff in order to provide well rounded, solution-focused care to our clients.

    Lou Moore, BS

    Neuro-Training Specialist

    Ms. Moore began working in neuro-feedback in January 2015 under the direct supervision of Dr. Clark and John Anderson, MA (a renowned and nationally recognized educator in the world of neuro-modulation). Lou transitioned from her successful career in real-estate sales to working in neuro-feedback in order to have a more meaningful impact in young people's lives. Her compassion, kindness and attention to the subtle complexities of human behavior allow her to serve our patients with the greatest of care. Ms. Moore's work-ethic and ability to build deep rapport sets her apart.


    Continuing in her passion for the wellness of others, Ms. Moore has earned 3 different certifications in the Integrative Amrit Method of Yoga Nidra. Her facilitator credentials include I AM Yoga Nidra, Advanced Yoga Nidra and I AM Yoga Nidra for Kids. Lou loves being in service and helping people relax into their true natures (authentic selves) through the sharing of Yoga Nidra Meditation.


    In addition to her work at NNPA, Ms. Moore enjoys her own yoga practice, meditation, swimming, biking and renovating homes.

    Anna Marie Herbold, BS

    Administrative Assistant, TMS Technician

    Anna Marie obtained her college degree in Exercise Science and Wellness from University of Tennessee, Martin where she graduated Summa Cum Laude.


    Anna Marie has extensive experience in the health care and wellness industry. Her past positions at Results Physiotherapy and Family Staffing Solutions afforded her the opportunity to ensure clinic performance goals were met, provide ongoing training and performance management of staff, as well as actively overseeing patient and resident care activities.


    Anna Marie provides all administrative needs at NNPA and assists in the daily operations of the technicians and clinicians as well as direct client care via conducting TMS sessions.  


    Anna Marie enjoys tennis and previously played at the collegiate level.

    Matt McKenzie

    Administrative Assistant, Neurofeedback Technician

    Matt McKenzie moved to Tennessee in 1986 and has enjoyed a career as a touring musician for artists as diverse as Lyle Lovett, Don Williams, Patty Loveless, and Olivia Newton-John. Seeking a way to become a bridge to more compassion, empathy, and healing, Matt went back to school in 2016. He graduated Magna Cum Laude from Trevecca Nazarene University with a BA in Psychology, and followed that with the Stens Corp. course in EEG Biofeedback directed by John Anderson, MA, and Mary Tracy, PhD. Matt serves NNPA as an administrative assistant and Neurofeedback tech.

    Matt can still be found playing music in and around Nashville, often working in the staff band at the Grand Old Opry.

    Emmerson "Emme" Dupree

    Administrative Assistant

    Emme graduated from the University of Kentucky in 2021 with a BA in Media Arts and Studies. After graduating and returning to her native home of Nashville, Emme worked for a talent agency as an admin and booking agent. Needing a change and wanting to work towards a more meaningful career, Emme recently decided to transition to NNPA. Emme is passionate about helping others and bringing compassion to the larger community. Emme hopes to further her experience and education in psychology in the near future. In her free time she enjoys an assortment of hobbies including gardening/farming, baking/cooking, and playing videogames.

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