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Susannah Williams, MD

Staff Psychiatrist
Languages
English
SPECIALTIES
ADHD
Anxiety
Bipolar Disorder
Depression
LGBTQIA+
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Perinatal Psychiatry
Phobias
Postpartum Depression
Tics/Tourette Syndrome
Geriatric

Education and training

  • The University of Alabama, BS
  • The University of Tennessee Health Science Center, Internship and Residency

Get to know

Susannah Williams, MD

Dr. S. Taylor Williams is a psychiatrist with Talkiatry. She is board-certified in psychiatry and has been practicing over 14 years. Dr. Williams received her MD from the University of Alabama School of Medicine at UAB. She completed her psychiatry residency at the University of Tennessee Health Science Center. Prior to joining Talkiatry, she held an academic appointment at UTHSC as Assistant Professor of Psychiatry and was the Clinical Director of the Memphis Mental Health Institute. She specializes in the treatment of young adults and LGBTQ patients. Her practice focuses on medication management.‍

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Jennifer Murdock, PMHNP

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Jennifer Murdock is a board-certified psychiatric nurse practitioner from Wisconsin. She specializes in mental health and has over a decade of experience. Seeking treatment for mental health issues can be intimidating and difficult. It can also come at a time of challenges and hardships. If you are dealing with mental health issues that don’t seem to be resolving with traditional talk therapy, it may be necessary to consider more intensive outpatient treatment options such as medication and/or alternative strategies to relieve symptoms. As a board-certified psychiatric nurse practitioner, Jennifer strives to create an open, inviting, and non-judgmental environment with compassion and acceptance. Jennifer, a PMHNP, is here to support, guide, and empower you in your journey to recovery and ultimately in becoming the best version of yourself. With an emphasis on a client-centered approach, she works with each unique client to find an evidence-based psychiatric or substance use treatment model that works best with them and their lifestyle. She will utilize an eclectic, holistic approach to your treatment plan including conventional medicine, supplements, alternative and complementary methods, and lifestyle modifications to help you achieve your goals. Jennifer reflects on her own experiences and feelings to connect with whoever comes into the office on a deep empathic level. She enjoys partnering with patients from teens to geriatrics and is passionate about working with those who struggle with trauma, grief, depression, anxiety and related disorders, mood disorders, and addiction. Jennifer also has experience in treating patients with medical comorbidities. She loves animals and finds them a source of comfort, healing, and humor.

Neena Mathew, PMHNP

Staff Nurse Practitioner

Neena Tressa Mathew has built an impressive career in the medical field, with a strong focus on mental health. She is dually board-certified as a Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-BC), providing care across all age groups. Fluent in English, Hindi, and Malayalam, she is licensed to practice in Florida, New York, Texas, and Georgia. Neena offers a patient-centered approach that integrates her diverse experience and certifications.

Her dedication to mental health is evident through her extensive hands-on experience in assessing, treating, and evaluating patients with a wide range of psychiatric conditions, including ADHD, depression, anxiety, PTSD, OCD, schizophrenia, and bipolar disorder. She has delivered exceptional care at institutions such as Mindful Behavioral Healthcare, AdventHealth Hospital, and Park Place Behavioral Health Care. Her international experience includes roles in Canada, where she further developed her expertise in geriatric psychiatry. Neena has also worked in various practice areas, including addiction medicine, grief counseling, and primary care.

Her academic background includes a Post-Master’s Certification from Florida State University and a Master of Science from D’Youville College in Buffalo, NY. She also holds a Bachelor of Science in Nursing from Delhi University and a Master’s Degree in Social Work from the Delhi School of Social Work. Her professional affiliations, including membership in the American Nurses Association, reflect her commitment to the field. Recognized for her academic, leadership, and research capabilities, Neena was invited to join Sigma Theta Tau International (STTI) as a graduate nursing student for her excellence in scholarship and outstanding achievements in nursing.

Neena has contributed to several U.S. nursing journals and magazines and has published and presented research articles in international peer-reviewed journals. She maintains an active academic presence through platforms like Google Scholar and ResearchGate.

Her approach to care is both traditional—prescribing evidence-based psychiatric medications—and holistic, incorporating natural treatments such as vitamins, supplements, lifestyle modifications, nutrition, exercise, and stress management. She believes in the mind-body-spirit connection, viewing individuals as whole beings rather than a collection of symptoms, echoing the philosophy of Hippocrates, the "Father of Medicine." Her holistic philosophy is evident in her skillful management of psychotropic medications and her integration of psychotherapy, including supportive therapy, cognitive behavioral therapy (CBT), and psychodynamic therapy.

Neena’s primary interest lies in exploring the relationship between mental, physical, and spiritual health. She finds great fulfillment in helping others and goes beyond diagnosis and treatment by conducting thorough mental health assessments to ensure accurate identification of psychiatric conditions. What sets her apart is her commitment to patient education—empowering individuals and their families with a deep understanding of their conditions and treatment plans, including medication as part of a comprehensive care strategy.

In addition to her clinical work, Neena serves as a clinical instructor, sharing her knowledge and insights with future healthcare professionals. This dual role highlights her multifaceted contribution to healthcare, emphasizing both treatment and education in supporting individuals on their mental health journeys.

Outside of her professional life, Neena enjoys reading, writing, beach activities, hiking, and traveling with her family. She is also actively involved in charitable work through the Lions Club. She lives by the principle:

“Give, and it will be given to you. A good measure, pressed down, shaken together and running over, will be poured into your lap. For with the measure you use, it will be measured to you.” (Luke 6:38)

Indeed, she believes that it is in giving that we truly receive.

Roy Johnston, MD

Staff Psychiatrist

Dr. R. Neil Johnston grew up in a rural Appalachian county in Virginia and was the first physician in a family of teachers. Fascinated by both science and the arts, he attended William and Mary, where his interests flourished. A college hospital job inspired him to pursue medicine, and part-time work at a children’s psychiatric facility during medical school confirmed his passion for psychiatry. He has since treated diverse populations in inpatient, outpatient, and intensive programs, with special focus on addictions, anxiety, and mood disorders. Helping patients find joy and improved functioning is his calling.

Dr. Johnston’s highest goal is to help patients feel and function better, aiming for relief and ideally full remission. He carefully manages medications, particularly controlled substances, using monitoring and safety protocols to protect patient health. He prioritizes ethical standards, patient confidentiality, and tailored care, incorporating both medication and lifestyle strategies such as nutrition and physical activity. His approach emphasizes understanding each patient as a person, not just a diagnosis. This will include routine clinical checks and frequent follow-up visits meant to protect patient health and welfare.

He begins with a comprehensive psychiatric evaluation, including review of medical and psychiatric history, recent labs, and relevant records. Communication with other providers and, when appropriate, family members ensures coordinated care. Administrative needs, such as insurance, leave, or social security forms, are addressed during visits. His approach combines thorough assessment, collaboration, and careful follow-up to optimize mental and overall health.

Cesar De Paz, MD

Chief Psychiatrist

Dr. De Paz received his medical degree from the University of Texas Medical Branch in Galveston, TX, and has been practicing for 9 years. He completed his psychiatric residency and child and adolescent psychiatry fellowship training at the University of Texas Medical Branch. After completing training, he worked at the Center for Health Care Services in San Antonio, TX. He worked with special needs children and adults who required the highest level of care both behaviorally and medically. He then continued his treatment of children and young adults at CommuniCare Health Center also in San Antonio. He served as Director of Behavioral Health for CommuniCare for 4 years. Dr. De Paz completed his undergraduate studies in Psychology and Biology at the University of Houston in Houston, TX. While having treated a wide variety of patients, his primary clinical focus has been the treatment of ADHD in children and adults, and working with special needs children and adults who may have Autism Spectrum Disorder or other Intellectual or Developmental Disabilities. Dr. De Paz's practice focuses on medication management. He offers medication management evaluations and follow-up visits. If the need arises, he works with licensed therapists to provide behavioral support.

Kasey Broom, MD

Staff Psychiatrist

Dr. Kasey Broom earned her medical degree from the University of South Carolina School of Medicine Greenville and completed general psychiatry residency and an addiction psychiatry fellowship at the Medical University of South Carolina in Charleston. She holds undergraduate and master’s degrees in biomedical engineering. Dr. Broom has experience in telepsychiatry, inpatient, outpatient, and interventional psychiatry settings, with expertise in treating mood, anxiety, trauma-related, attention, and substance use disorders, as well as women’s behavioral health and veteran populations.

Dr. Broom believes it’s a privilege to be part of her patients’ healing journey. She fosters authentic, therapeutic relationships in a supportive, judgment-free space that encourages open, honest communication. Her collaborative style integrates motivational interviewing, supportive psychotherapy, and cognitive behavioral strategies, all while providing evidence-based, patient-centered care that may include medication, therapy, and lifestyle changes.

In the initial session, Dr. Broom focuses on understanding each patient’s history, concerns, and personal goals. She creates individualized treatment plans that align with those goals and emphasizes education to help patients better understand their diagnoses. Through this approach, she empowers individuals to actively participate in their care and take meaningful steps toward recovery.

Celeste Boyd, PMHNP

Staff Nurse Practitioner

Ms. Celeste Boyd is a dual board certified Psychiatric Mental Health and Family Nurse Practitioner.  She is the CEO and Founder of Metamorphosis Psyche, a psychiatric mental health resource platform.  She has practiced in family medicine since 2011 and psychiatric mental health medicine since 2013.  She has clinical experience and expertise in substance use disorders, addiction rehabilitation, sleep medicine, general psychiatry, and serious mental illness (SMI) in both private and public sectors.  In Academia, she has extended her knowledge and experience as Adjunct Clinical Faculty at School of Nursing Graduate Programs.

Since 2017, Ms. Boyd has been practicing general psychiatry in the outpatient private sector.  Ms. Boyd provides medication management and psychotherapy for acute, chronic, and comorbid psychiatric conditions that include Anxiety Disorders, Depression, Mood Disorders, ADHD, OCD, and PTSD.  Her clinical treatment modalities include supportive therapy, solution-focused therapy, motivational enhancement, mindfulness, and cognitive behavioral therapy.

As a clinician, she promotes mental health awareness to reduce stigmatization and empower those suffering and struggling with mental illness. Ms. Boyd clinical practices are oriented towards the Mental Health Recovery Model, which permits individuals to go through an active process of change, being in control, strengthening, and empowering themselves to improve their mental health and well-being.

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Specialties
ADHD
Anxiety
Bipolar Disorder
Depression
LGBTQIA+
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Perinatal Psychiatry
Phobias
Postpartum Depression
Tics/Tourette Syndrome
Geriatric
States
Tennessee
Languages
English
Takes insurance
Virtual visits
14 years experience