Rebecca Siwanowicz, LCSW

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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Background and credentials

Dr. Corona is a board-certified psychiatrist who earned his medical degree from the University of Texas Health Science Center in San Antonio School of Medicine. He then completed his Adult Psychiatry Residency training at UT Health San Antonio. He has extensive experience treating diverse patient populations in various clinical settings.

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Treatment approach

Dr. Corona integrates medication management with therapeutic techniques and collaborates with therapists as needed to create individualized treatment plans. He is transparent in his thought process, ensuring that patients are actively involved in shaping their care. His treatment approach focuses on clarifying diagnoses and optimizing treatment modalities, considering both pharmacological and therapeutic interventions. He specializes in treating depression, anxiety, stress management, life transitions, strained relationships, trauma-related conditions, and other psychiatric challenges.

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What you can expect in a first visit

During the first visit, patients can expect a detailed and comprehensive evaluation, where Dr. Corona takes the time to understand their concerns, symptoms, and personal goals. He prioritizes thorough follow-ups to assess treatment progress and refine the care plan. His collaborative approach ensures that patients feel heard and actively involved in their personalized treatment journey, with clear communication on medication management and therapy recommendations.

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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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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.

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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.

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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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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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Paul Pennington is a Licensed Professional Counselor with over 15 years of mental health experience in a variety of settings ranging from schools, private practice, residential facilities, and crime scene crisis counseling. Paul has had the privilege of helping people with various situations including depression, anxiety, stress, anger, trauma, abuse, life transitions, relationships, integration, existential issues, and other obstacles that have caused an imbalance in their lives. Paul specializes in working with teachers, first responders, young parents, and individuals that just want to be seen as who they truly are.‍Paul earned a Bachelor of Science in Psychology with a minor in Sociology from Texas State University and a Master of Education in Guidance and Counseling from Angelo State University. A few of the certifications Paul has earned over the years are: Residential Staff from the Texas Department of Criminal Justice, Certified Anger Resolution Therapist (C.A.R.T.), AgriSafe Farm Response, Trust Based Relational Intervention (TBRI) Practitioner Trainer, Texas Education Agency: EC-12 SpEd, 4-8 Generalist, EC-12 School Counselor, SAFE EMDR, Mental Health First Aid, and Ketamine Assisted Psychotherapy.‍Paul believes everyone is different and takes an individualized approach with each client. He operates from a foundation in Cognitive Behavioral Therapy, Trust-Based Relational Intervention, Solution Focused Therapy, and Mindfulness.

Dr. Vanessa Valdes is an adult psychiatrist specializing in medication management and psychotherapy, with a strong focus on nutrition, wellness, and mindfulness. She earned her combined MD/MPH degree from the University of Miami Miller School of Medicine and completed her psychiatry residency at the University of Miami/Jackson Health System, one of the nation's leading public healthcare systems.‍During her residency, Dr. Valdes gained broad experience in diverse areas of psychiatry, including inpatient psychiatry, emergency psychiatry, outpatient care, psychotherapy, hypnosis, child and adolescent psychiatry, consultation-liaison psychiatry, psycho-oncology, and addiction psychiatry.‍Dr. Valdes primarily provides supportive psychotherapy and acceptance and commitment therapy to help patients better understand and address their stressors. She takes a holistic approach to care, emphasizing the emotional, spiritual, and physical well-being of her patients. Her goal is to inspire meaningful, sustainable changes in patients' lives through compassionate, comprehensive treatment.

Background and credentials

Dr. Robert Whelpley, M.D., is board-certified in both Child and Adolescent Psychiatry and Adult Psychiatry. He completed his undergraduate studies at Binghamton University and earned his medical degree from Upstate Medical University in Syracuse, New York. He then went on to complete his residency and fellowship training at the University of Rochester. Throughout his career, he has worked with patients and families across the lifespan in inpatient, outpatient, and emergency psychiatric settings.

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Treatment approach

Dr. Whelpley believes in collaborative care, working closely with treatment providers, patients, and families to ensure that mental health concerns are addressed as a team. His approach integrates talk therapy techniques, including motivational interviewing, cognitive-behavioral therapy (CBT), mindfulness, and supportive psychotherapy, alongside medication management. He customizes treatment to maximize each patient’s mental health and overall wellness, sometimes incorporating a therapist into the care plan when beneficial.

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What you can expect in a first visit

During the first visit, patients can expect a comprehensive evaluation where Dr. Whelpley takes time to understand their symptoms, background, and treatment goals. His approach is patient-centered and team-oriented, ensuring that care is personalized and collaborative. He works with patients to develop a treatment plan that balances medication management with therapeutic interventions, fostering long-term mental wellness.

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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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