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Christa DeFries, MD

Staff Psychiatrist
Languages
English
Conditions Treated
Anxiety
Depression
LGBTQIA+
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Phobias
Tics/Tourette Syndrome
Medication Management

Education and training

  • Wellesley College, BA
  • UT Southwestern Medical Center, MD
  • Baylor Scott and White Texas A&M College of Medicine, Residency

Get to know

Christa DeFries, MD

Background  and credentials    

Dr. Christa DeFries is a board-certified Adult Psychiatrist. She earned her  medical degree from UT Southwestern Medical School in Dallas, Texas, and  completed her residency in Adult Psychiatry at Baylor Scott & White in  Temple, Texas. Following residency, Dr. DeFries gained additional experience  treating homeless and formerly homeless populations in New York City,  particularly focusing on individuals with histories of trauma and substance  addiction, prior to joining Talkiatry.    

Treatment approach    

Dr. DeFries practices Adult Psychiatry, employing an integrative treatment  approach combining medication management, psychotherapeutic methods, and  lifestyle modifications. She recognizes that each patient benefits from a  personalized mix of these three aspects of care. Dr. DeFries specializes in  treating diverse psychiatric conditions, including those related to trauma,  substance addictions, and various mental health disorders.    

What you can expect in a first visit    

In a first visit with Dr. DeFries, patients can expect a comprehensive  evaluation aimed at understanding their individual mental health history,  specific concerns, and overall treatment goals. Dr. DeFries emphasizes an  individualized approach, carefully exploring the best combination of  medication, therapy, and lifestyle adjustments tailored specifically to each  patient's needs. Patients can anticipate an empathetic and collaborative  environment focused on their personal experiences and goals.    

Why Talkiatry?    

We’re a virtual mental health practice that makes it easy to find great  care. We combine quality and convenience to help you thrive—faster. Our  providers, like this one, are highly trained experts who specialize in  medication management and collaborate with you on a treatment plan that fits  your needs and comfort level.

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Michelle Corley, LISW

Staff Therapist

Michelle is a Licensed Clinical Social Worker/Licensed Independent Social Worker with over 10 years of experience in the mental health field. Michelle has worked in a variety of settings including community mental health, crisis management, outpatient treatment, inpatient treatment, and the private practice setting. Michelle has experience working with patients who are experiencing anxiety, depression, grief, and trauma symptoms. Michelle’s passion is working with women who are struggling with managing healthy coping mechanisms in the perinatal/postpartum period.

Michelle has received extensive training from the Postpartum Support International focusing on treating patients struggling with infertility, postpartum anxiety and depression, and pregnancy loss/grief. She utilizes a variety of treatment modalities ranging from Cognitive Behavioral Therapy, Dialectical Behavioral Therapy, Cognitive Processing Therapy, and Mindfulness Based Therapy.

Michelle’s approach to therapy is compassionate, collaborative, and warm. She considers it an honor to walk alongside you during this difficult journey. Let’s talk to see how Michelle can best support you.

Felicitas Koster, DO

Staff Psychiatrist

Dr. Koster is board certified in psychiatry and forensic psychiatry. After completing her medical education, residency, and fellowship, she started working on a Forensic Assertive Community Treatment (FACT) team, followed by working at a community hospital. She then transitioned to a clinic serving patients who were determined severely mentally ill (SMI). Dr. Koster has been involved with teaching residents and working within an academic institution. Dr. Koster is a Fellow of the American Psychiatric Association, a member of the American Academy of Psychiatry and the Law and the American Osteopathic Association. Dr. Koster enjoys working with people of diverse backgrounds and experiences. She uses a culturally sensitive and holistic approach in the evaluation and treatment of brain health conditions. She believes in a team approach and her patients' active participation in treatment planning. She incorporates a variety of modalities in her treatment that can include medications, personal medicine, psychotherapy, mindfulness, and lifestyle changes. Dr. Koster specializes in psychopharmacology and believes in using medications when indicated at the lowest effective dose to minimize the risk of side effects. She is experienced in treating depression, bipolar disorder, anxiety disorders, OCD, PTSD and schizophrenia. If Dr. Koster believes you would benefit from additional therapy, she will collaborate with your therapist to achieve the best outcome.

Alisa Zezetko, MD

Staff Psychiatrist

Dr. Zezetko completed her medical training at the University of Georgia/August University Medical Partnership. While in medical school, she received a Master of Business Administration at the University of Georgia. She then moved to North Carolina to complete her psychiatric residency training at the Brody School of Medicine/ECU Health Medical Center. During her training, she gained extensive clinical experience in working with adults and veterans in psychiatric inpatient, outpatient, and emergency settings. She also served as a chief resident of the psychiatry program and published several case studies.

Dr. Zezetko relies on evidence-based treatments to guide pharmacotherapy decisions. In addition to medication management, she also incorporates supportive psychotherapy and psychodynamic psychotherapy techniques in her visits with her patients. When appropriate, Dr. Zezetko will refer patients for further psychotherapy and collaborate with therapists to provide more comprehensive care. Dr. Zezetko takes great pride in forming meaningful connections with her patients and listening to their concerns.

Dr. Zezetko will conduct a comprehensive psychiatric evaluation and take time to understand patients’ individual concerns, mental health goals, and history. Dr. Zezetko believes in building a strong therapeutic relationship that empowers patients to join in a collaborative discussion for optimizing their individual treatment plans and reaching their defined goals.

Ashley Sharp, LPC/MHSP

Staff Therapist

Ashley Sharp is a Licensed Professional Counselor with Mental Health Service Provider
designation, who has experience working in multiple settings within the mental health
field including private practice counseling, school-based counseling, and in a behavioral
health hospital. This has allowed Ashley to work closely with individuals of various
demographics and a wide spectrum of mental health conditions. Ashley obtained her
undergraduate degree in psychology from Bryan College in Dayton, TN, and graduate
degree in clinical mental health counseling from Richmont Graduate University in
Chattanooga, TN.

Ashley has been working in the mental health field for 4 years and
focuses on mood and anxiety disorders, as well as personality disorders,
challenges in relationship dynamics, and difficult life transitions such as grief and
divorce. Ashley tailors her treatment modalities for the greatest benefit of the individual,
being considerate of the background and needs of each client.
Ashley uses an eclectic approach to therapy founded in Cognitive Behavioral Therapy
and incorporates elements of Dialectical Behavior Therapy such as mindfulness,
distress tolerance, and emotional regulation.

Myrtle Davenport, PMHNP

Staff Nurse Practitioner

Myrtle Davenport is a dual certified Family Psychiatric Nurse Practitioner with over 12 years of experience in healthcare. She completed her Masters of Science in Nursing (MSN) degree with a concentration in Family Nurse Practitioner at Chamberlain University and a Post Master’s in Psychiatric Mental Health Nurse Practitioner at Valdosta State University. Myrtle is skilled in assessing and treating a variety of mental health disorders including but not limited to anxiety, major depression, PTSD, ADHD, OCD, and other mood disorders across the life span. She is trained in psychiatric diagnosis, medication management, and supportive therapy. Over the past 7 years, she has gained valuable experience in a number of settings, including outpatient, inpatient, and residential facilities, community mental health clinics, and private practice.

Myrtle is dedicated to providing a safe and nonjudgmental environment where patients can expect to be heard, emotionally validated, and supported. She will ensure that patients are well-informed, empowering them to be active participants in managing their care. By fostering a strong therapeutic relationship, she will support her patients in achieving long-term mental wellness and resilience.

As a dedicated Psychiatric Nurse Practitioner, Myrtle provides comprehensive mental health care to individuals across the lifespan, helping them navigate through their mental health challenges with a holistic, compassionate approach. Her clinical practice involves conducting a thorough assessment and gathering relevant information from patients about their medical, psychiatric, and social history. Through open and empathetic communication, she will ensure a deep understanding of their symptoms, challenges, and goals. Based on the assessment, she will work closely with her patients to develop an individualized treatment plan and lifestyle recommendations. She will offer education on mental health conditions, coping strategies, and self-care techniques. She also provides referrals to therapists and other support services, helping patients develop the skills they need to thrive. She also believes in providing psychoeducation to patients, families, and caregivers. Myrtle's approach to patient care is grounded in empathy, respect, and evidence-based practices, and she is committed to fostering a supportive, collaborative environment where patients feel empowered to achieve their mental health goals.

Nina Jacobs, MD

Staff Psychiatrist

Background and credentials

Dr. Nina Jacobs is a board-certified psychiatrist specializing in child, adolescent, and adult psychiatry with over 20 years of clinical experience. She earned her medical degree from the University of Chicago, Pritzker School of Medicine and completed her adult, child, and adolescent psychiatry training at NYU School of Medicine. Additionally, she has specialized training in psychodynamic psychotherapy from the New York Psychoanalytic Institute. Before joining Talkiatry, she served as Chief of Adult Behavioral Health at a busy urban community health clinic.

Treatment approach

Dr. Jacobs believes that understanding and compassion are fundamental to effective psychiatric care. She provides engaged, patient-centered treatment, focusing on reducing symptoms and restoring well-being. Her approach includes comprehensive evaluations, thoughtful medication management, supportive therapy, and the development of stress management skills. She treats youth ages 13-17 and adults with anxiety, depression, bipolar disorder, ADHD, PTSD, and other mental health conditions. For adolescent patients, she includes parental involvement during a portion of appointments to discuss progress and treatment plans.

What you can expect in a first visit

During the first visit, patients can expect a comprehensive evaluation in which Dr. Jacobs takes time to understand their symptoms, history, and goals. She fosters a collaborative and compassionate environment, ensuring that treatment plans are personalized and patient-centered. Her approach may include medication management, therapy recommendations, and stress management techniques to support patients in achieving their mental health and well-being goals.

Why Talkiatry?

We’re a virtual mental health practice that makes it easy to find great care. We combine quality and convenience to help you thrive—faster. Our providers, like this one, are highly trained experts who specialize in medication management and collaborate with you on a treatment plan that fits your needs and comfort level.

Ready to get matched?

Start our short assessment
Specialties
Anxiety
Depression
LGBTQIA+
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Phobias
Tics/Tourette Syndrome
Medication Management
States
New York
Texas
California
Languages
English
Takes insurance
Virtual visits
1 years experience