Robert Whelpley, MD

Dr. Mattern is board certified in Adult psychiatry. Her approach to mental health is integrative, with the utilization of complementary and alternative treatments such as yoga, lifestyle changes, and nutritional interventions in addition to traditional medication management and therapy. Dr. Mattern prefers to focus on the overall health and well-being of an individual, rather than just treating symptoms.

Dr. Mattern’s practice focuses on medication management along with elements of therapy from different modalities, such as supportive and cognitive behavioral therapy that are patient-tailored.  Dr. Mattern understands the importance of psychotherapy and may ask to bring in a therapist into your treatment team to provide the best care and outcome. Her clinical interests include depression, bipolar disorder, anxiety disorders, post-traumatic stress disorder, panic disorder, OCD, and ADHD.

After completing her undergraduate degree in Biology at Ohio Northern University, Dr. Mattern received her medical degree from Ohio University Heritage College of Osteopathic Medicine. She went on to complete her residency in psychiatry at The Ohio State University Medical Center.  She also completed yoga teacher training and presented nationally at the APA in 2019 regarding the benefits of yoga for depression.  Dr. Mattern is a member of the American Psychiatric Association, Ohio Psychiatric Physician’s Association, and Psychiatry Society of Central Ohio.

Dr. Mattern is board certified in Adult psychiatry.  Her approach to mental health is integrative, with utilization of complementary and alternative treatments such as yoga, lifestyle changes, and nutritional interventions in addition to traditional medication management and therapy. Dr. Mattern prefers to focus on the overall health and well-being of an individual, rather than just treating symptoms.  Dr. Mattern’s practice focuses on medication management along with elements of therapy.

Dr. Lisette Rodriguez-Cabezas earned her medical degree from the University of Illinois at Chicago and completed her psychiatry residency and a Women’s Mental Health Fellowship at Northwestern University. She has been Board Certified in adult psychiatry since 2017 and is a Distinguished Fellow of the American Psychiatric Association. With over 10 years of experience, she specializes in Women’s Reproductive Mental Health.

Dr. Rodriguez-Cabezas values a patient-centered approach, emphasizing open communication and creating a supportive environment where patients feel heard and understood.

She begins by gathering a detailed history from each patient to fully understand their goals and concerns. From there, she develops an individualized treatment plan tailored to the patient’s unique needs, ensuring care is collaborative and focused on achieving meaningful outcomes.

Background and credentials    

Dr. Catherine Cashman is triple board-certified by the American Board of  Psychiatry and Neurology in Adult Psychiatry, Child & Adolescent  Psychiatry, and Forensic Psychiatry. She holds two Bachelor’s degrees: one in  Finance from New York University, and another in Biology from the University  of New Orleans. She earned her medical degree from Nova Southeastern  University and completed an Adult Psychiatry residency at LSU Health Sciences  Center in New Orleans. Dr. Cashman subsequently completed two fellowships:  the first in Child & Adolescent Psychiatry at LSU New Orleans, along with  a certification in Infant Mental Health (working with children ages 0–6 years  and their caregivers); the second fellowship was in Forensic Psychiatry at  the University of Rochester and the Rochester Regional Forensic Unit.    

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Treatment approach    

Dr. Cashman brings an extensive and specialized skillset to psychiatry,  informed by her triple board-certifications. Her treatment approach  integrates clinical expertise from adult, child and adolescent, and forensic  psychiatry, emphasizing accurate diagnosis, risk assessment, and  evidence-based care. With specialized expertise in forensic psychiatry and  competency assessments, she employs rigorous evaluation methods to accurately  inform treatment planning and risk management, particularly in complex or  legally-involved cases.    

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What you can expect in a first visit    

Patients visiting Dr. Cashman for the first time can expect a detailed and  comprehensive psychiatric evaluation. Given her forensic and clinical  experience, initial assessments are thorough, focusing on clear diagnostic  understanding, individualized risk assessment, and appropriate treatment  planning. Patients can anticipate a collaborative, professional, and  structured environment aimed at clarifying diagnoses and addressing their  unique mental health needs effectively.    

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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.

Dr. Troy Grantham is a board-certified staff psychiatrist who treats adult patients. A former engineer, Dr. Grantham has developed a passion for guiding patients along the road to recovery. He completed his undergraduate studies at The University of Texas at Austin and later completed medical school and residency in General Psychiatry at The University of Texas Medical Branch at Galveston. Dr. Grantham's practice focuses on medication management. He utilizes a systematic approach to ensure diagnoses are accurate and treatment plans are optimized to each individual patient. His approach is also holistic in nature, often incorporating therapy and lifestyle modification into the treatment plan. Dr. Grantham employs multiple therapeutic approaches in his practice depending on the needs of the patient including supportive therapy, Cognitive Behavioral Therapy (CBT), and Acceptance and Commitment Therapy (ACT). He places great emphasis on psychoeducation so that patients are aware of the nature and prognosis of their conditions as well as the treatment options available. When multiple treatment options are reasonable, Dr. Grantham takes patient preference into account, offering flexibility to the patient experience. He treats a variety of psychiatric disorders with a particular focus on mood disorders, anxiety disorders, obsessive-compulsive disorders, and trauma-related disorders.

Please note: Dr. Grantham does not prescribe long-term, daily benzodiazepine medications, however he is happy to help you taper off of these medications and transition to a safer, long-term medication regimen.

Dr. Maxim Chasanov, MD, brings over 30 years of experience in both inpatient and outpatient psychiatric settings. He has held leadership roles, including serving as Medical Director across various clinical programs. Dr. Chasanov completed his undergraduate studies at the University of Chicago and earned his medical degree from Loyola University Stritch School of Medicine in Chicago, Illinois. He completed his residency at Loyola University Medical Center, where he was appointed chief resident during his final year.

Dr. Chasanov values open, honest communication and takes a collaborative approach to care. He partners with patients to identify clear treatment goals and uses symptom screener tools to objectively track progress. He strives to create a warm, supportive, and empathetic environment where patients feel heard, respected, and actively engaged in their treatment journey.

In the first session, Dr. Chasanov works to gain a thorough understanding of each patient’s history, current concerns, and long-term goals. He then develops a personalized treatment plan aligned with those goals. His approach balances symptom improvement with medication tolerability and incorporates therapies that further enhance outcomes.

Dr. Katelyn Thompson is board certified in Adult Psychiatry.  

Patients looking for a psychiatric provider will find that Dr. Thompson has a gentle and approachable style.  She believes that each patient was created on purpose and for a purpose.  

The brain is deeply wired for resilience and Dr. Thompson is blessed to witness that while supporting that in her patients.  She focuses on medication management with supportive psychotherapy as she treats a wide variety of psychiatric diagnoses.