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Diane Lewis, MD

Staff Psychiatrist
Languages
English
SPECIALTIES
Anxiety
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Phobias

Education and training

• Texas A&M University, BS

• Texas A&M University Health Science Center/College of Medicine, MD

• UT Southwestern Medical Center - Austin Regional Programs, Residency

Get to know

Diane Lewis, MD

Background and credentials

Dr. Diane Lewis is board-certified in general psychiatry by the American Board of Psychiatry and Neurology. She earned both her undergraduate and medical degrees at Texas A&M University (College Station and Temple, TX) before completing her general psychiatry residency at UT Southwestern - Austin Programs (now Dell Medical School residency programs). After her residency, she practiced for eight years as a staff psychiatrist at the University of Texas' student counseling center. She also has experience working in hospital admissions and emergency department settings.

Treatment approach

Dr. Lewis employs a medication-management-focused approach typically paired with supportive therapy during 30-minute follow-up visits. She strongly values a collaborative treatment approach, frequently encouraging patients to incorporate additional therapy for the best outcomes. Her primary specialty is college mental health, treating patients aged 18-45 with a range of mental health conditions from mild to complex. Dr. Lewis emphasizes authenticity, compassion, and recognizing patients beyond their diagnoses, providing care tailored to individual circumstances and goals.

What you can expect in a first visit

During a first visit, patients can expect Dr. Lewis to conduct a thorough evaluation, carefully listening to their concerns, and considering their symptoms within the broader context of their lives. Her patients appreciate her down-to-earth and compassionate communication style. She aims to create an environment where patients feel understood, respected, and actively involved in shaping their personalized treatment plan, often recommending additional therapy support when beneficial for achieving optimal outcomes.

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Dr. Sarah Guzman earned her medical degree from Baylor College of Medicine and completed her psychiatric residency at UT Southwestern in Dallas, TX. She served as a psychiatrist in the United States Navy and has practiced in inpatient and outpatient settings, including a state-run mental health clinic and as a civilian on a United States Army base. She provides general adult psychiatry and medication management, treating anxiety disorders, OCD, depression, bipolar disorder, ADHD, and PTSD.

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The initial appointment centers on understanding each patient’s history and concerns. By the second session, treatment goals are identified. From there, Dr. Guzman collaborates with patients to develop individualized treatment plans and adjust care as needed to support meaningful progress.

Cody Zaiontz, LPC

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Cody Zaiontz is an LPC in the state of Texas. He has been providing counseling services to a variety of clients, who have sought help for many different types of mental health conditions, for over 5 years. Cody completed his undergraduate education in San Marcos, Texas at Texas State University and earned his bachelor's degree in psychology. He went on to complete his graduate school training in Counseling & Guidance at Texas A&M University San Antonio. His practicum training took place at the UT Health Science Center in San Antonio, Texas where he was trained in Cognitive Behavioral Therapy, Dialectical Behavioral Therapy, Motivational Interviewing, Solution-Focused Brief Therapy, and crisis management. Upon graduating with his master's in counseling, Cody worked for 2 years helping individuals diagnosed with a serious mental illness (schizophrenia, bipolar disorder, etc.) in an inpatient psychiatric hospital. He then learned how to provide outpatient counseling services, both in-person and through a secure telehealth platform. In his private practice, he worked with adults dealing with substance abuse, PTSD, depression, anxiety, and family issues. He also helped his clients work towards weight loss goals, learn ways to improve sleep, learn ways to increase their social support system, and learn other skills that will help them live a happier, more fulfilled life. Cody operated his private practice until he joined Talkiatry in the fall of 2024.

Victoria Mustovic, MD

Staff Psychiatrist

Dr. Victoria Mustovic is a board-certified psychiatrist trained in general adult psychiatry who specializes in perinatal, postpartum, and LGBTQIA+ behavioral health. Clinical practice focuses on managing a variety of mental health conditions with particular interests in treating ADHD, OCD, anxiety, and mood disorders. A collaborative care approach is utilized to actively engage patients in treatment decisions and planning. Medication management is integrated with therapy to support a more comprehensive clinical approach. Therapy treatment focuses mainly on supportive therapy with use of additional therapy modalities based on patient needs. An evidence-based approach is combined with consideration of individual factors in order to work with patients to create a holistic, patient-centered treatment plan. Dr. Mustovic completed an undergraduate education at Allegheny College with a bachelor's degree in biology and double minor in psychology and chemistry. Dr. Mustovic went on to pursue a Medical Doctorate at Jacobs School of Medicine and Biomedical Sciences at the University of Buffalo, graduated Summa Cum Laude, and was inducted into Alpha Omega AlphaHonor Society for academic achievement. After medical school, Dr. Mustovic completed psychiatry residency at Allegheny Health Network. Additional experience includes both co-authoring a book chapter on women's behavioral health and presenting posters on several different topics in mental health for the Pittsburgh Psychiatric Society, including a presentation on the identification and management of complex trauma in victims of sex trafficking. Dr. Mustovic has 2 years training in outpatient perinatal and postpartum behavioral health and 6 months experience working as co-facilitator in a perinatal and postpartum intensive outpatient treatment program both through the Alexis Joy D'Achille Foundation for Postpartum Depression at West Penn Hospital. Work as a co-facilitator included assisting patient groups in understanding and developing coping skills for a variety of therapy modalities including mindfulness, behavioral activation, interpersonal, cognitive behavioral (CBT), and dialectical behavioral (DBT) therapies. Dr. Mustovic is also dedicated to serving the LGBTQIA+ community with experience in LGBTQIA+ patient care over 4 years at Allegheny Health Network in a variety of clinical settings including inpatient, outpatient, and intensive outpatient programs. Dr. Mustovic is passionate about providing a supportive treatment environment to help improve equal access to care and support patients in advocating for their needs and concerns in health care settings.

Mohammed Islam, MD

Staff Psychiatrist

Education and training

Stony Brook University (Bachelor of Science)

American University of Integrative Sciences (MD)

Davenport University (MBA)

Bergen New Bridge Medical Center (residency)

University Hospitals Cleveland Medical Center/Case Western Reserve University (fellowship)

Dr. Mohammed Islam is board certified in both General Psychiatry and Child and Adolescent Psychiatry. He completed his undergraduate studies at Stony Brook University and attended medical school at the American University of Integrative Sciences. He completed his psychiatry residency training at Bergen New Bridge Medical Center followed by completion of a fellowship in Child and Adolescent Psychiatry at University Hospitals/Case Western Reserve University where he served as Chief Fellow. Prior to joining Talkiatry, he has trained/worked in a combination of various healthcare systems across New York, New Jersey, Ohio and Kentucky.

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From the initial visit and onward, Dr. Islam prioritizes a collaborative effort with his patients (and at times their families). In addition to medication adjustments, he emphasizes the importance of optimizing additional tools such as therapy while making appropriate lifestyle changes. During every follow up visit, he takes care to ensure that the current treatment is not hindering his patient’s progress in any way.

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Specialties
Anxiety
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Phobias
States
New York
Languages
English
Takes insurance
Virtual visits
8 years experience