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Amanda Kerr, DO

Staff Psychiatrist
Languages
English
SPECIALTIES
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Phobias
Postpartum Depression
Tics/Tourette Syndrome
Medication Management

Education and training

  • Arizona College Of Osteopathic Medicine Midwestern University Doctor of Osteopathic Medicine (DO)
  • Loyola Marymount University Master of Arts (MA)

Get to know

Amanda Kerr, DO

Dr. Amanda Kerr is a board-certified Psychiatrist. Her practice focuses on medication management, though she passionately believes in a holistic approach. She attended Boston University for her undergraduate studies and Loyola Marymount University for graduate school. She then completed her training at Midwestern University Arizona College of Osteopathic Medicine for medical school and Rowan University School of Osteopathic Medicine for residency, where she was selected to serve as Chief Resident during her final year. After completion of her residency in 2016, she dedicated seven years to serving a wide range of patients in a community mental health setting, both in-person and via telepsychiatry. She also serves as a provider at an Intensive Outpatient Program. She has experience treating patients with depressive and bipolar disorders, anxiety disorders, PTSD, and OCD. She also has extensive teaching experience in various settings. Dr. Kerr has a gentle and approachable style when providing medication management in conjunction with supportive psychotherapy, and at times Cognitive Behavioral Therapy techniques to more fully address each individual's needs. She utilizes mindfulness approaches as well, which she finds personally meaningful in her practices of meditation and yoga. If Dr. Kerr feels you would benefit from working with a therapist as well, she may recommend and values a collaborative approach.

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Dr. Prit Patel is a board-certified adult psychiatrist. He obtained his medical degree from the University of South Florida and subsequently completed his residency training at the University of Texas at Austin and Northwell Health's Zucker Hillside Hospital. During his training, Dr. Patel also served as chief resident of Zucker's Hillside Hospital's outpatient psychiatric department. Following his training, Dr. Patel has previously worked at New York Presbyterian's Gracie Square Hospital, where he served as an inpatient psychiatrist treating a variety of mental health conditions, utilizing a combination of medication management and therapeutic techniques in helping those experiencing distress due to their conditions. Throughout his training and career thus far, Dr. Patel has received several awards for his clinical care and contribution to medical and psychiatric education, such as Zucker Hillside's Psychiatric Educator award. Dr. Patel has also contributed to medical research in the domains of psychiatry and LGBTQ+ healthcare .Dr. Patel has an interest in not only treating disorders but also helping patients improve their overall well-being. He treats a variety of conditions including depression, bipolar disorder, anxiety disorders, obsessive-compulsive disorders, and trauma-related disorders, through the use of medication and therapy. He has particular experience and interest in treating LGBTQ+ patients as well as young professionals and young adults.

Alanna Montalvan, PMHNP

Staff Nurse Practitioner

Alanna Montalvan is a Board-Certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with over 15 years of nursing experience, including 10+ years as a PMHNP. She has supported individuals with anxiety, depression, ADHD, trauma-related disorders, bipolar disorder, and chronic mental health needs across outpatient, inpatient, and psychiatric emergency settings. Alanna holds a Master of Science in Nursing from Hunter College with a PMHNP concentration and is expanding her clinical expertise through Family Nurse Practitioner training. She values patient-centered care and multidisciplinary collaboration.

Alanna prioritizes creating a warm, non-judgmental space where patients feel heard, respected, and supported. She takes a collaborative approach, partnering with patients to identify goals, explore treatment options, and build long-term wellness strategies. Open communication, transparency, and a holistic perspective that integrates emotional and physical health guide her practice. Patients can expect thoughtful, evidence-based care that considers life stressors, identity, family dynamics, and wellness behaviors.

Alanna begins with a comprehensive assessment to understand each patient’s history, concerns, strengths, and goals. She develops individualized treatment plans, including medication management, psychotherapy-informed strategies, lifestyle recommendations, and coordination with other providers as needed. Treatment goals are regularly revisited to ensure care evolves with the patient. She emphasizes empowerment and education, helping patients feel confident and informed throughout their mental health journey.

Nereida Gonzalez-Berrios, MD

Staff Psychiatrist

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.

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.

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.

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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Tamara Lazenby, MD is a board-certified psychiatrist with more than 20 years of clinical and academic experience in emergency mental health, disaster response, and trauma-focused care. She earned her undergraduate degree at George Mason University and completed her medical degree at Eastern Virginia Medical School. After the September 11th attacks, Dr. Lazenby trained in psychiatry at New York Medical College’s Saint Vincent’s Hospital, specializing in emergency and trauma psychiatry.

She previously served as Associate Director of Wellness & Emergency Response Services at New York University’s Student Health Center, leading a team that cared for more than 50,000 global NYU students. Dr. Lazenby also previously served as Staff Psychiatrist and Team Lead for the Combat PTSD Clinical Team at the Hampton VA Medical Center, providing care for veterans with service-related trauma and implementing National VA Standards of Care.

Dr. Lazenby believes healing happens when mind, body, and spirit are aligned. She creates a compassionate and collaborative environment where patients feel deeply heard and empowered in their own care. Her approach blends conventional psychiatric treatment with nutrition, mindfulness, movement, and stress-reduction strategies to support long-term mental wellness.  She values authenticity, open communication, and shared decision-making, empowering patients to build resilience and restore balance in their lives.

She begins with a comprehensive assessment exploring medical, psychological, and lifestyle factors that influence mental health. Treatment plans are personalized and may include psychotherapy, targeted laboratory testing, lifestyle modifications, supplements, and medication when appropriate. Dr. Lazenby works closely with patients to restore balance, resilience, and overall well-being through a truly integrative approach. Regular collaboration and feedback, helping patients heal, grow, and thrive.

Reaghan Hicks, MD

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Dr. Reaghan Hicks is a double board-certified psychiatrist in General and Addiction Psychiatry. She completed her undergraduate training at The College of Charleston followed by medical school at The University of South Carolina School of Medicine. Dr. Hicks completed Residency in General Psychiatry at The University of Florida College of Medicine in Jacksonville followed by Fellowship in Addiction Psychiatry at The Medical University of South Carolina. Dr. Hicks is an experienced clinician that specializes in treating individuals with a variety of diagnoses including adjustment disorders, depression, anxiety, PTSD, bipolar disorder, ADHD, and substance use disorders.‍She has an approachable style and values building rapport with her patients. She believes it is a privilege to be a part of someone's journey towards recovery and wellness. Dr. Hicks aims to meet each patient where they are while maintaining a nonjudgemental, patient-centered, and evidenced-based treatment approach. Dr. Hicks provides supportive psychotherapy, cognitive behavioral skills, and utilizes motivational interviewing to meet the needs of her patients. She believes effective utilization of therapy skills in conjunction with medication management can help patients meet their individualized treatment goals.

Kristin Ratz, MD

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Dr. Kristin Ratz is a Board-Certified psychiatrist who is an expert in the diagnosis, treatment, and prevention of mental, emotional and behavioral disorders. She specializes in medication management combined with supportive therapy during 30-minute follow-up sessions. Dr. Ratz recognizes that each patient is unique and believes in an environment of collaboration, in which the patient and psychiatrist work together in order to develop the best individualized treatment plan. A California local, Dr. Ratz obtained her undergraduate education at University of California, Davis, graduating magna cum laude with a degree in Human Development. She then attended medical school at Loma Linda University School of Medicine, obtaining her Medical Doctorate. Following this, she completed her adult psychiatry residency training at the distinguished University of California, Irvine. Dr. Ratz has worked in a diverse range of healthcare settings, including county and community clinics, and is very experienced in telepsychiatry. She pays close attention to not only an individual's emotional state, but also their physical, spiritual, and social well-being, in order to provide her patients with exceptional holistic care.

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Specialties
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Phobias
Postpartum Depression
Tics/Tourette Syndrome
Medication Management
States
Arizona
Colorado
Languages
English
Takes insurance
Virtual visits
years experience