John Whittier, MD

Dr. Richard Mullin brings over a decade of experience in outpatient psychiatric care, with prior roles providing treatment to juveniles in detention and adults in jail and prison systems across West Virginia. He completed his medical degree at the Joan C. Edwards School of Medicine at Marshall University and trained in psychiatry and child and adolescent psychiatry at West Virginia University. Dr. Mullin emphasizes the importance of truly listening, so patients feel seen and heard.

Dr. Mullin works collaboratively with his patients to identify their main concerns and to build a treatment plan that feels right for them. He believes treatment should be a shared process in which the patient is empowered and supported in their mental health journey.

Taking a "less is more" approach to medication, Dr. Mullin focuses on minimizing prescriptions while still addressing all of a patient’s needs. His goal is to help patients eventually rely more on therapeutic skills than medication. He views treatment as a partnership—balancing his expertise in psychiatry with each patient's lived experience.

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Dr. Anantharam Peesapati is a board-certified adult psychiatrist who graduated from General Psychiatry Residency training at Rutgers Robert Wood Johnson Medical School. There, he honed his skills by treating a diverse patient population suffering from various diagnoses, including major depression, bipolar disorder, anxiety disorders, PTSD, ADHD, and substance use disorders. Prior to residency, Dr. Peesapati earned his medical degree from Florida Atlantic University Charles E. Schmidt College of Medicine & his bachelor's degree in Psychology with a specialization in Behavioral & Cognitive Neuroscience from the University of Florida. Dr. Peesapati is committed to providing comprehensive care to his patients, with a focus on medication management & psychoeducation, as well as supportive psychotherapy and cognitive-behavioral therapy. His approach is guided by psychodynamic principles and steeped in mindfulness, ensuring a holistic and personalized treatment plan for each individual. Dr. Peesapati's goal is to help every patient achieve their best mental health and well-being, which may include collaboration with a therapist while also considering the impact of lifestyle on their health.

Dr. Mary Lou Gutierrez is board-certified in both Child & Adolescent Psychiatry and General Psychiatry, with over 20 years of clinical experience. She earned her M.D. from Loyola University Medical Center, where she also completed her residency in Adult Psychiatry. She pursued fellowship training in Child and Adolescent Psychiatry at Northwestern University’s Children’s Memorial Hospital. Her past roles include Medical Director for Compass Health Center’s Under 18 Program and Attending Psychiatrist at Loyola. She has been recognized as a “Top Doctor” in Child and Adolescent Psychiatry by US News and World Report and Negocios Now.

Dr. Gutierrez fosters a warm, collaborative environment where patients and families feel supported and understood. She emphasizes open communication and works closely with patients to define meaningful, realistic treatment goals. Her holistic, family-centered approach integrates medication management, therapy, and psychoeducation with a deep commitment to cultural sensitivity and compassionate care.

Dr. Gutierrez begins by learning each patient’s personal story, clinical history, and goals through a comprehensive evaluation. She creates individualized, evidence-based treatment plans tailored to each child’s unique needs and family context. She continuously collaborates with patients, families, and care teams to ensure treatment remains effective, combining psychotherapy, medication management, and coordination with other providers and resources.

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. Krishna Divadeenam is a staff psychiatrist at Talkiatry. He trained in New York and earned his medical degree from Albany Medical College in 1997.  He finished his internship at Vanderbilt Medical Center and completed his psychiatric residency at the University of Kansas Medical Center in 2000. During his residency, he served as Chief Resident at the Kansas City VA Medical Center (KCVA).  His initial post-residency focus was with patients with serious and persistent mental illness (SPMI) when he worked at the Johnson County Mental Health Center.  He has served as a adjunct professor at the University of Kansas providing clinical supervision to residents and yearly lectures on Bipolar disorder, Tourette’s and Obsessive compulsive disorder for over 20 years.  He worked at Midwest Psychiatric associates in an outpatient private practice for nearly 3 years before returning to the KCVA.  There he oversaw care for combat veterans as a clinical psychiatrist and the supervisor for the PTSD Specialty outpatient clinic.  After 5 years he transitioned to the inpatient unit as the inpatient supervisor and one of the attending physicians of the acute inpatient psychiatric unit.  In addition, he served as the University of Kansas Site director for their psychiatric residency program.  

Dr. Divadeenam believes in a holistic approach to mental health treatment, integrating medication management, supportive psychotherapy, and collaboration with therapists and support staff. He tailors treatment to each patient's unique needs, ensuring a comprehensive and individualized approach to care. His expertise includes treating a variety of psychiatric diagnoses, such as mood disorders, anxiety disorders (including OCD), ADHD, and PTSD.

In a first visit, patients can expect a thorough evaluation, where Dr. Divadeenam takes the time to understand their medical history, symptoms, and treatment goals. He emphasizes open communication and collaborative decision-making, ensuring that patients feel heard and supported. Based on this initial assessment, he will develop a personalized treatment plan, which may include medication management and referrals to therapy or other supportive services as needed.

Dr. Ismail is double board-certified by the American Board of Psychiatry and Neurology in both Adult Psychiatry and Child and Adolescent Psychiatry. She earned her medical degree from Cairo University, where she also completed her neurology residency at Cairo University Hospitals. Following this, she pursued psychiatric training at New York Medical College at St. Vincent’s Hospitals, where she was appointed Chief Resident and recognized as Resident of the Year.

Dr. Ismail further specialized with a fellowship in Child and Adolescent Psychiatry at UMDNJ/Rutgers Robert Wood Johnson Medical School. Her career includes multiple leadership roles, notably serving as Chief of the Child and Adolescent Partial Hospital Programs (PHP) at Rutgers University in Newark, NJ, where she provided direct care to young patients. She has also held Medical Director positions across various clinical settings, including child and adolescent inpatient units, outpatient programs, and intensive outpatient services for both adolescents and adults with mental health and co-occurring substance use disorders.

An active educator, Dr. Ismail has been a teaching faculty member, delivering lectures and providing supervision and evaluations for medical residents and child and adolescent psychiatry fellows. Her academic contributions extend to research, where she has served as a principal investigator on multiple studies.

Throughout her career in leadership and teaching, Dr. Ismail maintained an integrative private practice in New Jersey, serving residents of the NJ and NY metropolitan areas before relocating to North Carolina.

Dr. Ismail is passionate about integrative medicine, which combines evidence-based alternative therapies with conventional treatments to optimize outcomes. Her approach focuses on promoting overall wellness, keeping both the body and mind in harmony.

During the diagnostic evaluation, Dr. Ismail will review your medical history and past treatments to develop a comprehensive, personalized treatment plan that prioritizes your overall wellness. In addition to medication management, she incorporates supportive, cognitive, or psychodynamic psychotherapy during follow-up visits, as time allows. When appropriate, she may also recommend referrals to specialized psychotherapists to address your individual needs as part of a holistic treatment approach.