Parker Loy, MD

Staff Psychiatrist
Languages
English
Conditions Treated
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma

Education and training

  • The University of Tennessee, Knoxville, BS
  • University of Tennessee Health Science Center, MS
  • University of Tennessee Health Science Center, MD
  • University of Tennessee Health Science Center, Residency

Get to know

Parker Loy, MD

Dr. Parker Loy is a board-certified Psychiatrist at Talkiatry. After finishing undergraduate studies at the University of Tennessee, Knoxville, he completed the University of Tennessee Health Science Center (UTHSC) Master of Science program before enrolling in medical school at the same institution. After graduating from medical school, he completed his residency at UTHSC, during which he trained in a variety of inpatient and outpatient settings and treated a broad spectrum of mental health conditions. He enjoys treating a wide variety of conditions, including mood and anxiety disorders. Therapeutic techniques are incorporated into medication management visits when indicated, and collaboration with therapists may also be recommended.

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Margaret Ngumi, MSN, APRN, FNP-C, PMHNP-BC, is a dual board-certified Psychiatric Mental Health and Family Nurse Practitioner with over 20 years of experience in healthcare. She began her career as a Family Nurse Practitioner and later pursued a post-master’s certification in psychiatry to address the growing need for accessible mental health services. Margaret has extensive experience in both inpatient and outpatient settings, treating conditions such as depression, anxiety, PTSD, mood disorders, and substance use disorders.

She takes a collaborative, patient-centered approach to care, creating a safe and supportive environment where individuals feel heard and empowered. With a strong emphasis on holistic care, Margaret considers all aspects of a patient’s well-being—including lifestyle, relationships, and overall health. Whether through medication management, therapy, or lifestyle modifications, she is committed to helping patients achieve meaningful and lasting improvements in their mental health.

Margaret begins with a comprehensive psychiatric evaluation to understand each patient’s history, concerns, and goals. She then works closely with them to develop a personalized care plan that may include medication, therapy, and evidence-based lifestyle interventions. She prioritizes open communication, patient education, and ongoing collaboration to ensure treatment remains effective and evolves with each patient’s needs. Through her compassionate and evidence-based approach, Margaret is dedicated to helping individuals find balance and improve their overall quality of life.

Tara Thompson-Felix, MD

Staff Psychiatrist

Dr. Tara Thompson-Felix is a board-certified child, adolescent and adult psychiatrist. Dr. Thompson-Felix has specialized training in perinatal mental health and believes that improving outcomes during pregnancy and the postpartum period has a long-lasting impact on outcomes for a mother and child. She also specializes in treating a wide array of psychiatric conditions affecting children, adolescents, and young adults. Dr. Thompson-Felix's journey into medicine started in her undergraduate studies at Rutgers University. She earned her medical degree at Rutgers, Robert Wood Johnson Medical School and trained in adult psychiatry at Temple University Medical School. She completed her child and adolescent psychiatry fellowship at Yale School of Medicine. In addition to her clinical work, Dr. Thompson-Felix has extensive research experience in using neuroscience to understand the impact of maternal mental health on child development. She has authored several publications, presents her work nationally/internationally, and received numerous awards for her clinical work, research, and passion for teaching. Dr. Thompson-Felix believes that trust, communication, and respect between a patient and their physician is the foundation of effective treatment. Her style is welcoming, nonjudgmental, and collaborative. She evaluates mental health based on biological, psychological, and cultural aspects. She uses evidence-based treatments to manage psychiatric symptoms and promote optimal health.

Kathryn Hu, MD

Staff Psychiatrist

Dr. Kathryn Hu is a board-certified adult psychiatrist. She majored in biology and neuroscience at Brandeis University, attended medical school at Albert Einstein College of Medicine, and completed residency training at Stony Brook University Hospital. ‍Dr. Hu practices a patient-centered approach to mental health care. She works collaboratively on goals of treatment, with a focus on medication management while incorporating supportive therapy, cognitive behavioral therapy, and mindfulness. ‍Dr. Hu treats a variety of mental health concerns including depression, anxiety, bipolar disorder, PTSD, and ADHD.

Namrata Shah, MD

Staff Psychiatrist

Dr. Namrata Shah is a board-certified adult psychiatrist who completed her undergraduate training at the University of Wisconsin-Madison and earned her medical degree at the American University of Antigua. She completed her psychiatry residency at Creedmoor Psychiatric Center, where she trained at New York-Presbyterian/Columbia University Irving Medical Center. In addition to experience providing inpatient and outpatient care, Dr. Shah has worked with a wide variety of patient populations. The conditions she treats include depression, bipolar disorder, anxiety disorders, panic disorder, OCD, and ADHD. In addition, Dr. Shah is particularly interested in issues related to women's mental health, including perinatal mental health issues. Dr. Shah emphasizes the importance of a strong doctor-patient therapeutic alliance and a patient-centered approach. To provide the best care, she believes in compassion, open communication, and collaboration. As a primary treatment method, she combines psychopharmacological medication and supportive therapy.

Beatrice Desir, DO

Staff Psychiatrist

Dr. Desir is a Board-Certified Psychiatrist who completed her undergraduate training at The University of Scranton followed by medical school at the New York Institute of Technology College of Osteopathic Medicine. She completed psychiatry residency at Nassau University Medical Center where she served as the Administrative Chief Resident in her final year. Dr. Desir has been in practice for 4 years and has provided patients with compassionate psychiatric care. She has worked in community mental health settings throughout her career, in which she served a wide variety of patient populations. Dr. Desir is experienced in treating various psychiatric illnesses including mood disorders, anxiety disorders, OCD, PTSD, and ADHD. At the heart of Dr. Desir's clinical approach is a strong emphasis on establishing trust and building a therapeutic relationship. She also provides psychoeducation to help patients make informed decisions regarding their care. She works collaboratively with patients to develop individualized treatment plans to help them achieve their goals. Dr. Desir's practice focuses on medication management. Typically, she offers this in conjunction with supportive or emotionally focused therapy in 30-minute follow-up visits. Occasionally, Dr. Desir may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. Talkiatry takes medication management seriously. All state-controlled substance databases are reviewed and taken into consideration during your initial evaluation.

Lea Wersan, LCSW

Staff Therapist

Lea Wersan is a licensed clinical social worker with extensive experience working in the mental health field. She has worked directly with clients of various demographics, living with a variety of mental health conditions. Lea attended undergraduate school in Queens, NY and graduate school in New York, NY. Lea has been practicing for 3 years as a Clinical Social Worker, focusing on anxiety disorders, trauma and life transitions. Her approach is person-centered and trauma informed, focusing on the client as a whole. Working with Lea, treatment is tailored to each individual client, as great effort is put into choosing the treatment modalities that fit the individual's personal needs. Lea uses an eclectic approach with a foundation in cognitive behavior therapy and dialectical behavior therapy, which are intertwined with mindfulness.

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Specialties
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
States
New York
Tennessee
North Carolina
Languages
English
Takes insurance
Virtual visits
years experience