Alejandra Cattan, MD

Background and credentials

Dr. Nereida Gonzalez-Berrios is a general psychiatrist fluent in English and Spanish. She earned her bachelor’s degree in Microbiology from the University of Puerto Rico and her medical doctorate from Ponce School of Medicine (now Ponce Health Sciences University). She completed her General Psychiatry Training Program at the University of Puerto Rico Medical Sciences Campus, graduating in 2008. After practicing privately in Puerto Rico, she relocated to Texas, where she worked for over five years at the Michael E. DeBakey VA Health System, providing mental health care to veterans. She has also gained extensive experience in telemedicine, working both within the VA system and as a locum tenens provider.

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Treatment approach

Dr. Gonzalez-Berrios has extensive experience treating a wide range of psychiatric conditions, including mood disorders, anxiety disorders, psychotic disorders, intellectual impairment, ADHD, eating disorders, PTSD, and personality disorders. She integrates traditional psychiatric treatment with a holistic wellness approach, drawing on her background as a motivational speaker, wellness coach, certified personal fitness trainer, nutrition coach, and weight-loss specialist. Her approach emphasizes improving overall mental and physical well-being through personalized treatment plans that incorporate psychiatric care, wellness strategies, and lifestyle modifications.

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What you can expect in a first visit

Patients can expect a comprehensive psychiatric evaluation where Dr. Gonzalez-Berrios carefully assesses their symptoms, medical history, and personal wellness goals. She takes a collaborative and patient-centered approach, ensuring that treatment is tailored to each individual’s mental and physical health needs. As an experienced telemedicine provider, she offers accessible and flexible mental health care, combining medication management and holistic wellness strategies to help patients achieve lasting well-being.

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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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Dr. Elaine Kwok is a board-certified Adult Psychiatrist who has been practicing for 9 years. She specializes in depression and anxiety and believes in a holistic approach to the wellness of both the mind and body. Dr. Kwok conducts a comprehensive and individualized assessment for each patient utilizing a combination of medication management, lifestyle changes, and coping skills, creating a safe and therapeutic environment to facilitate healing and growth .Dr. Kwok received her undergraduate degree from New York University and her medical degree from St. George's University. She then completed her residency training at Seton Hall University. After training, she worked in the inpatient and outpatient units at Capital Health Medical Center in Trenton, New Jersey. She was a voluntary faculty member and trained residents and medical students from Rutgers Robert Wood Johnson Medical School. She has training in Cognitive Behavioral Therapy and Dialectical Behavioral Therapy. She actively participates in her local community to provide education and training for mental health providers. Dr. Kwok strives to collaborate and address hindrances that may interfere with an individual's best self. She focuses on creating a strong therapeutic relationship to support and facilitate balance, lifestyle enhancement, and emotional well-being. She looks forward to getting to know you and embarking on this journey together.

Dr. Michael Petetit has worked with people from many different walks of life in clinics, hospitals, and online, providing evidence-based treatments for a wide range of mental health conditions. His professional journey is unique—he began his career as a research chemist, later earned a Master’s degree in psychology and worked with children, before pursuing his medical degree and completing a psychiatry residency.

Dr. Petetit approaches treatment as a true collaboration. He partners with patients to clarify goals and create individualized treatment plans that reflect their priorities and values. He strives to be non-judgmental, direct, and honest in his style, building a therapeutic relationship that supports open communication and trust.

Dr. Petetit begins with a thorough evaluation to understand each patient’s circumstances and challenges. From there, he works with patients to set and prioritize goals, review treatment options, and select a plan that feels both comfortable and practical. As treatment progresses, he regularly revisits and refines the plan, ensuring it remains effective and aligned with the patient’s evolving needs.

Dr. Joshua Riederman is a board-certified psychiatrist with a specialization in the treatment of adults aged 18 to 65. Dr. Riederman obtained his undergraduate degree in brain, cognition, and neuroscience from the University of Michigan in Ann Arbor. He subsequently attended medical school at Nova Southeastern University in Fort Lauderdale, Florida, and completed his residency training at JFK Hospital in Palm Beach, Florida.

Dr. Riederman places a strong emphasis on establishing meaningful relationships with his patients and supporting them in achieving their individual life goals through effective treatment. He actively incorporates patient preferences into all treatment plans and integrates psychotherapy with medication management. Dr. Riederman recognizes the importance of educating patients about their care and dedicates time during each appointment to address any questions or concerns they may have.

In his clinical practice, Dr. Riederman begins by facilitating an open dialogue with patients regarding their primary concerns for the appointment. During initial consultations, he conducts a comprehensive assessment, which includes gathering relevant medical, familial, and social histories that may influence the course of treatment. In subsequent appointments, Dr. Riederman engages patients by inquiring about developments that have occurred since their last visit, as well as any issues related to medications or significant life events.

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Dr. Zac Myslinski is a staff psychiatrist who provides thoughtful, evidence-based care for adults facing a wide range of difficulties. He is committed to creating a welcoming, collaborative space where patients from all backgrounds, including but not limited to the LGBTQ+ community, feel heard and supported.

He earned his undergraduate degree in chemistry from Dartmouth College and his medical degree from Weill Cornell Medicine, where he received the Richard Kohl Prize for Excellence in Psychiatry. He completed his psychiatry residency at Harvard-Beth Israel Deaconess Medical Center, where he served as chief resident of the Consult-Liaison/Emergency Department Psychiatry service. He has also conducted research on Alzheimer’s disease and health system economics.

New patients can expect a personalized approach that includes discussion of both medication and therapy. Dr. Myslinski values understanding your treatment preferences and aims to serve as a consultant and collaborator in identifying the best path forward. He believes that developing a shared understanding of your background and current difficulties is essential to effective treatment.

Dr. Myslinski is well-trained in using a wide range of medications and interventions alongside talk therapy, especially cognitive behavioral therapy (CBT) and acceptance and commitment therapy (ACT). His approach emphasizes flexibility, autonomy, and curiosity, with a focus on symptom relief and deeper self-understanding.

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Dr. Matthew Richter has experience practicing in outpatient and inpatient settings, as well as with military and confinement populations. He earned his medical degree from the Uniformed Services University of the Health Sciences and completed a psychiatry residency at Walter Reed National Military Medical Center, followed by a forensic psychiatry fellowship at the National Capital Consortium.

Dr. Richter fosters a safe, non-judgmental space where patients can explore their feelings and experiences freely, met with unconditional positive regard. He prioritizes active listening and deep empathy, ensuring each patient feels heard, understood, and valued as a unique individual throughout their treatment journey.

Initial sessions focus on a collaborative exploration of a patient’s history, current challenges, and core values, forming the foundation for a personalized treatment plan. Dr. Richter emphasizes shared decision-making, integrating therapeutic modalities—including medication when appropriate—while honoring patient autonomy and aligning with their vision for well-being.