OCD Psychiatrists in California

Background and credentials

Dr. Lisa Ekeanyanwu is a board-eligible psychiatrist who completed her psychiatry residency training at Stanford University. She has gained experience in a wide range of clinical environments, including inpatient and outpatient care, community mental health settings, emergency rooms, telehealth services, and international clinical fieldwork.

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Treatment approach

Dr. Ekeanyanwu’s practice is centered on pharmacotherapy, which she integrates with supportive therapy, cognitive behavioral therapy (CBT), and psychodynamic therapy to provide comprehensive psychiatric care. She takes a collaborative and individualized approach, tailoring treatment to meet each patient’s unique goals and improve their overall quality of life. She has a special interest in cultural and micro-cultural influences on mental health and strives to provide culturally competent care that respects each patient’s life experiences and values. When she believes additional therapy may be beneficial, she may recommend incorporating a therapist into the care team.

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What you can expect in a first visit

During the first visit, patients can expect a thorough evaluation where Dr. Ekeanyanwu carefully assesses their symptoms, medical history, and personal treatment goals. She fosters a collaborative and patient-centered environment, ensuring that each treatment plan aligns with the patient’s individual needs. She provides medication management along with therapeutic support and, when appropriate, may recommend additional therapy to optimize outcomes. Her approach prioritizes safe, effective, and culturally sensitive care that evolves to support patients throughout different stages of their lives.

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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. Iris Guerrero Urena is double board-certified in psychiatry and consultation-liaison psychiatry. She received her medical degree from Universidad Iberoamericana in the Dominican Republic and went on to complete psychiatric residency at Lincoln Hospital in New York City. Dr. Guerrero then completed a consultation liaison fellowship at Morningside and West Mount Sinai Hospital in New York, further acquiring proficiency in caring for patients with complex medical and psychiatric comorbidities. After completing training, Dr. Guerrero worked in an acute inpatient unit and as a psychiatric consultant for patients admitted to medical units in Oregon. Dr. Guerrero Urena focuses on medication management while also implementing elements of supportive, dialectical behavioral, and cognitive behavioral therapy within each session to fully address individual needs. At times, Dr. Guerrero Urena may recommend a therapist for additional therapy. Dr. Guerrero Urena is experienced in treating a wide range of psychiatric conditions including depression, bipolar disorder, anxiety, PTSD, OCD.

Dr. Boski Patel holds the position of psychiatrist at Talkiatry. She is double board-certified in geriatric and adult psychiatry and she has been practicing for over 3 years. Dr. Patel's practice focuses on medication management and she typically in conjunction with supportive therapy in 30-minute follow-up visits. On occasion, Dr. Patel may believe that additional therapy is also needed and asks that you bring a therapist into your care team to provide the best outcome. She received her undergraduate degree from the University of Pittsburgh, and then went on to receive her medical degree from Penn State University. Following medical school, she completed general psychiatry residency training at the University of Connecticut where she was Chief resident of outpatient psychiatric services. During that time, she was also chosen as an Honors scholar by the American Association of Geriatric Psychiatry. After training, she moved to California to do her geriatric psychiatry fellowship at Stanford. Following her fellowship, she worked at Kaiser Permanente in clinical roles of outpatient, geriatric, and C/L.

Dr. Kristofer Joondeph-Breidbart is a board certified adult psychiatrist. He earned his undergraduate degree and Master's in Teaching from Boston University, followed by his medical degree from the University of Massachusetts Medical School. Dr. Joondeph-Breidbart completed his residency in general adult psychiatry at Cambridge Health Alliance, a Harvard teaching hospital. Currently, Dr. Joondeph-Breidbart serves as a staff psychiatrist at Harvard University Health Services, where he works with both undergraduate and graduate students. He has developed significant expertise in working with LGBTQ individuals through his involvement with the Gender and Sexuality Clinic at Cambridge Health Alliance and the LGBTQ Interdisciplinary Team at Harvard University Health Services. While he has extensive expertise in treating college-aged young adults, his practice also includes a broad range of patients, with a particular specialization in Obsessive-Compulsive Disorder (OCD). He is trained in Exposure and Response Prevention Therapy, a highly effective treatment for OCD. Dr. Joondeph-Breidbart takes a holistic approach to mental health care, integrating therapy into his sessions and collaborating with patients to develop individualized medication regimens that best meet their needs. His gentle and understanding approach helps create a supportive environment for his patients, fostering their mental and emotional well-being.

Dr. Rodriguez is a board-certified adult psychiatrist. He earned his medical degree from the David Geffen School of Medicine at UCLA and completed his residency at the University of Southern California. Dr. Rodriguez has experience working in a variety of settings, including inpatient, outpatient, community mental health, and correctional facilities.

Dr. Rodriguez specializes in treating depression and anxiety. He acknowledges that while medications can be necessary, they are not magic, and a holistic approach is essential for achieving mental health. With this understanding, Dr. Rodriguez spends time getting to know his patients, focusing on helping them achieve mental wellness rather than simply prescribing medications. When he became a doctor, he made a pledge to "do no harm." He takes this commitment seriously and only prescribes medications, especially those with addictive properties, when it is safe and clearly indicated.

The first one or two appointments focus on a thorough assessment to establish a provisional diagnosis, which is essential for effective treatment planning. Once this initial diagnosis is made, Dr. Rodriguez collaborates with his patients to develop tailored treatment recommendations. During follow-up appointments, he actively listens to his patients and proposes adjustments to the treatment plan as needed.

Dr. Mustafa Taquee is a board-certified Adult Psychiatrist. After receiving his undergraduate degree from Wayne State University in Detroit, he completed his medical degree at Oakland University William Beaumont in Rochester, MI. He is a graduate of the Adult Psychiatry Residency Program at St. Mary Mercy Hospital in Livonia, MI. As a testament to Dr. Taquee's desire to help patients reach their full potential, he has also completed a psychotherapy fellowship through the Michigan Psychoanalytic Institute. Dr. Taquee believes that every patient brings their own mosaic of experiences embedded in a unique story. He understands that building a strong therapeutic relationship through empathy, compassion, trust, and respect is essential. He enjoys taking time to understand his patient's goals, offer psychoeducation, and create a collaborative plan for treatment with the patient. He believes in a holistic approach to mental health treatment, which includes medication management, supportive and cognitive behavioral therapy techniques, as well as mind-body medicine techniques. He also has a special interest in psychodynamic therapy, an in-depth therapy modality, which he incorporates in all patient interactions and sessions. Due to the diversity and richness of culture in southeast Michigan, Dr.Taquee has experience working with patients from varied backgrounds. He enjoys the challenge such a heterogeneous environment brings and is particularly fond of working with young adults experiencing life transitions. He also has experience working with patients from lower socioeconomic backgrounds, as well as adolescents and geriatric populations.

Dr. Alexandra Dunn is a board-certified adult psychiatrist who completed her medical training at the University of California Irvine School of Medicine. She then moved to New York to complete her psychiatric residency training at Mount Sinai Beth Israel. During training, Dr. Dunn gained extensive clinical experience in psychiatric inpatient, outpatient, and emergency settings, allowing her the opportunity to treat patients of all ages and backgrounds. In addition, she co-led a mindfulness group at the outpatient clinic, worked with students at Baruch College, and rotated with the Assertive Community Treatment team at MSBI. Ultimately, Dr. Dunn chose outpatient care, focusing on treating patients with mood and anxiety disorders. While her practice primarily emphasizes medication management, she also incorporates supportive and cognitive behavioral therapy techniques in her sessions with patients. If appropriate, Dr. Dunn will refer you for psychotherapy and collaborate with your therapist to support your care. She looks forward to meeting and working with you to help you feel better.

Dr. Richard Shehane completed medical school at the University of Nevada School of Medicine and then went on to complete psychiatry residency training at Naval Medical Center San Diego. Dr. Shehane is a board-certified psychiatrist that specializes in the treatment of depression, anxiety, PTSD, bipolar disorder, schizophrenia, personality disorders and ADHD. Dr. Shehane has also worked extensively with patients that have experienced sexual trauma in their past and patients struggling with substance and alcohol use addictions.

Dr. Shehane will focus on two main approaches to mental health treatment: medication management and psychotherapy. Appointments will focus on a mix of interactions aimed at tailoring each patient’s specific medication needs as well as promoting mental health wellness through different types of evidence-based therapy techniques including mindfulness, CBT, CPT and psychodynamic psychotherapy.

Dr. Shehane works together patients to develop a plan that fits each patient’s individual needs. Initial appointments will focus on identifying and treating primary concerns, and then later appointments will center on building upon the therapeutic relationship to increase self-awareness, promote emotional insight, and secure lasting positive mental health changes.

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Dr. Michael Locher completed Adult Psychiatry Residency Training at Los Angeles County, University of Southern California in which he focused two years of training in conducting Mindfulness Based Cognitive Therapy. Dr. Locher received his Bachelor of Science Undergraduate degree in 3 years with Phi Beta Kappa honors at University of Miami, Florida. In medical school at Stony Brook School of Medicine in New York, Dr. Locher was inducted into the Gold Humanism Honor Society while earning his Doctor of Medicine (MD) degree. Dr. Locher has held academic appointments at University of Southern California Keck School of Medicine, College of Osteopathic Medicine of the Pacific Western University of Health Sciences, and Ventura Community Memorial Health System Psychiatric Residency Training Program. He has an in interest working with immigrants and LGBTQ+ communities.  

Dr. Locher’s approach to medication management is that it is one tool to be used in the broader context of a multi-modal evidence-based treatment approach that draws upon psychotherapy, mindfulness skills, Buddhist psychology, psychedelic AKA “mind manifesting” studies, yoga philosophy, and other integrative practices. He understands that healing is an individualized process that cannot unfold without a safe space. Dr. Locher is dedicated to holding an approachable, empathic space where you can feel empowered to write the next chapter of your life.  

Dr. Locher is well versed in treating the full spectrum of mental illness. Having worked on multidisciplinary teams in acute inpatient psychiatric hospital settings, psychiatric emergency rooms, and mental health urgent cares for the better part of 10 years, he is comfortable helping with not just mild to moderate illness, but also the most severe cases of mental illness. Dr. Locher is especially motivated to work with you to maintain stability, avoid hospitalization, and more broadly, to achieve wellness.

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Dr. Mullenix is a board-certified adult psychiatrist who strives to form strong therapeutic and collaborative environments with patients and values patient empowerment. Dr. Mullenix received his medical degree from the Chicago Medical School and then went on to complete his residency in psychiatry at Advocate Lutheran General Hospital. His interests and expertise are in helping patients struggling with depression, anxiety, including social/obsessive compulsive and generalized anxiety disorders, and ADHD. He provides psychiatric medication management along with supportive, cognitive behavioral therapy (CBT) and other modalities of therapeutic treatment. Dr. Mullenix's practice focuses primarily on medication management, or pharmacotherapy. He routinely incorporates supportive therapy into his 30-minute follow-up visits. Dr. Mullenix may occasionally recommend that a therapist be part of the care team to provide optimal outcomes. The philosophy of his practice is to actively involve patients in the decision-making process to improve adherence to treatment and build trusting relationships with all patients.

Dr. Rachel Sherhart is a board-certified adult psychiatrist who has been in practice for over 4 years. She specializes in medication management with 30-minute follow-up visits. This may be accompanied by elements of supportive therapy, Acceptance and Commitment Therapy (ACT), Dialectical Behavior Therapy (DBT), and psychodynamic therapy. If more in-depth work is needed, she may refer patients to a collaborating psychotherapist. ‍Dr. Sherhart received her medical degree from Texas A&M Health Science Center and completed her psychiatry residency training at the University of Texas Southwestern in Dallas, Texas. She has served as faculty at Texas A&M University College of Medicine, providing education and supervision for psychiatry residents and medical students. ‍She has experience treating adult patients from many walks of life with a broad range of diagnoses, including depression, anxiety, bipolar disorder, ADHD, and trauma-related disorders. Dr. Sherhart has a passion for providing excellent patient care and education. Her goal is for patients to feel heard and find a safe place to discuss their concerns. She is motivated to work collaboratively with patients to find a solution that best fits their treatment goals and improves their overall quality of life.‍

Dr. Jen Wygant is a board-certified psychiatrist who specializes in adult psychiatry. She completed her residency training in general adult psychiatry at the University of Michigan and received her medical degree from Rocky Vista University College of Osteopathic Medicine. However, she took a non-traditional path to medical school. She earned her undergraduate degree in nursing at Northern Michigan University where she also did Army ROTC and competed on their cross-country ski team. After graduation, she went on to work as a nurse in the Army and compete on the US National Biathlon Team.

During her training, Dr. Wygant gained extensive experience treating a wide range of diagnoses with particular emphasis on PTSD, anxiety and depression in diverse populations, including college students, LGBTQIA+ individuals, perinatal individuals, Veterans and those with socioeconomic disadvantages.

Through her work as an Army nurse, lifestyle as an elite level athlete, and training as an Osteopathic physician she has developed a holistic and compassionate approach to providing care as well as an understanding of challenges unique to athletes and Service members. She integrates multiple types of therapy into her medication management appointments and collaborates with patients to form an individualized and empowering care plan that aligns with their goals and priorities.  

Dr. Wygant looks forward to working with you!

Dr. Kathryn Bertacchi is board-certified in both adult and child & adolescent psychiatry. Originally from California, she earned her medical degree from University College Cork in Ireland and completed residency and fellowship at Emory University. She has practiced in varied settings, including developing specialized clinics in eating disorders and gender-affirming care. She is a member of several professional organizations including AACAP, APA, and WPATH.

Dr. Bertacchi fosters an inclusive, nonjudgmental environment where patients feel safe to be themselves. She approaches care with curiosity, compassion, and deep respect for each person’s unique story, aiming to help individuals feel genuinely heard and supported throughout their treatment journey.

In early sessions, Dr. Bertacchi works collaboratively to understand patients' lives, goals, and challenges. While her focus is medication management, she integrates cognitive-behavioral, humanistic, and supportive techniques. She may recommend additional therapy as needed and particularly values working with youth and adults from diverse backgrounds.

Dr. Vargas is an adult psychiatrist who received her medical degree from the University of Texas Health Science Center of San Antonio. She subsequently completed her psychiatry residency training at UT Health San Antonio.

Dr. Vargas has a patient-centered and thorough approach to treatment. She has experience treating a broad spectrum of mental health disorders, with particular interest in depression, anxiety, and post-traumatic stress disorder. She has also worked in clinic with severely mentally ill patients at the South Texas VA in San Antonio.

Dr. Vargas's primary focus is medication management with an emphasis on shared decision-making; however, she frequently also utilizes supportive therapy, cognitive behavioral therapy, and psychodynamic therapy principles in her approach. She may refer patients to a therapist if further support would be beneficial.

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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.

Robynn Cavaliere, PMHNP-BC, is a nationally board-certified Psychiatric Mental Health Nurse Practitioner. She earned her nursing practice degree from the University of San Diego (USD). Her passion for helping others began at the age of 16 when she became an EMT and volunteered with a local emergency unit. Inspired by a strong belief in service to country and a desire to follow in her brothers’ footsteps, she proudly served in the United States Marine Corps.

Robynn’s nursing journey began over two decades ago, driven by a deep calling to care for others. She started her career as an LVN on medical/surgical/telemetry floors, advanced to an RN in the emergency room, and eventually became a psychiatric nurse practitioner.

Her extensive nursing experience spans a wide range of clinical settings and patient populations, shaping her approach to interviewing, assessment, and intervention. Robynn applies the Biopsychosocial Model in every patient encounter, believing that a comprehensive understanding of the whole person leads to more effective treatment recommendations, improved outcomes, and better prognoses.

She is deeply committed to making a positive impact in her patients’ lives and giving back to the nursing profession. Robynn precepts student nurse practitioners in her practice and serves as a Clinical Assistant Professor at USD, where she helps educate the next generation of healthcare providers.

Robynn emphasizes the importance of comprehensive assessments, active listening, and building therapeutic alliances that foster trust and create a safe space for patients to share their thoughts and concerns. She collaborates closely with patients to ensure they feel heard, encourages active participation in their treatment, and provides education to enhance insight and promote behavioral change. Her approach includes supportive psychotherapy and incorporates techniques from Cognitive Behavioral Therapy (CBT), Interpersonal Therapy, Reality Therapy, and Solution-Focused Therapy during medication management visits.

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