Dennis Valerstain, MD

Dr. Jennifer Cenker is a board-certified psychiatrist with a strong foundation in science and mental health care. She earned her bachelor’s degree in Biology from John Carroll University, completed a PhD in Molecular Virology at Case Western Reserve University, and received her medical degree from The Ohio State University College of Medicine, where she also completed her Psychiatry Residency. She treats a range of conditions including ADHD, depression, anxiety, OCD, bipolar disorder, and PTSD/trauma.

Dr. Cenker values open communication and a strong therapeutic alliance, creating a supportive and collaborative environment where patients feel heard and respected. She develops individualized treatment plans that typically include both medication management and therapy, guided by evidence-based practices. She also promotes weight-neutral care and emphasizes health-supporting habits.

Dr. Cenker begins with a comprehensive initial appointment focused on understanding each patient’s history and treatment goals. She uses this information to build personalized treatment plans. Follow-up appointments include ongoing medication management and the integration of therapeutic techniques, ensuring care evolves with the patient's needs.

Dr. Garrick Gaffney is board certified in psychiatry by the American Board of Psychiatry and Neurology (ABPN). He earned his medical degree from Kansas City University and completed his psychiatry residency at John Peter Smith Hospital in Fort Worth, Texas. A combat veteran, he served in the U.S. Marine Corps, including a tour in Iraq, and was honored with the Navy and Marine Corps Achievement Medal and a Certificate of Commendation for exemplary leadership.

During medical school, Dr. Gaffney pursued advanced training as an Osteopathic Manipulative Medicine fellow. As a resident, he served as Chief Academic Resident and earned accolades such as Intern of the Year and Outstanding Educator of the Year twice consecutively.

Dr. Gaffney specializes in treating complex psychiatric conditions, including depression, anxiety, PTSD, OCD, bipolar disorder, and insomnia. He has presented case studies and quality improvement projects at national conferences, including the American Psychiatric Association (APA), Academy of Consultation-Liaison Psychiatry, and Association for Academic Psychiatry.

A proponent of holistic care, Dr. Gaffney integrates psychotherapy into medication management and emphasizes lifestyle modifications and evidence‑based integrative medicine.

New patients receive comprehensive evaluations to rule out medical causes of symptoms, followed by tailored treatment plans combining therapy, medication, and lifestyle adjustments. Follow‑up visits focus on symptom management through supportive, brief dynamic, or cognitive behavioral therapy, with frequent appointments until stabilization is achieved.

Dr. Gaffney is committed to collaborative, patient‑centered care that addresses both mental and physical well‑being.

Dr. Yaejin Park is a board-certified adult psychiatrist at Talkiatry. She received her medical degree from the University of Illinois at Chicago School of Medicine and completed her psychiatry residency training at Mount Sinai Morningside West.

Dr. Park has professional interests in treating a wide range of psychiatric conditions including depression, anxiety, PTSD, and eating disorders.  She strives to provide compassionate and holistic care with the integration of supportive psychotherapy and medication management.

Dr. Lemaire Leo Pierre is a board certified adult psychiatric provider with over 10 years of experience. He has additional years working in the medical field as a physician assistant. Dr. Pierre's practice entails medication management accompanied by supportive psychotherapy. He frequently encourages other forms of psychotherapy with a counselor to maximize treatment outcomes. After completing medical school at Central America Health Science University, he returned to New York City and completed his psychiatry residency at New York Medical College Program at Metropolitan Hospital Center. Subsequently, he moved to Minnesota and worked with Park Nicollet Health Service/HealthPartners. He had been there for 10.5 years, where he oversaw a successful psychiatric practice and helped his patients who had been struggling with their conditions. Dr. Pierre is a member of the American Board of Psychiatry and Neurology, in addition to the American Psychiatry Association and State Psychiatry Association. He also enjoys attending conferences and reading journals to learn about cutting-edge treatments so that he is updated on the most recent FDA-approved medications.

Zakiyyah Weatherspoon is a dual-certified Family Nurse Practitioner and Psychiatric Mental Health Nurse Practitioner with over a decade of experience. Since 2011, she has worked in family medicine, and since 2013, she has focused on mental health care across the lifespan. Her background includes treating children, teens and adults in hospitals, private practices, and community settings.

Since 2017, Weatherspoon specialized in helping individuals manage depression, anxiety, bipolar disorder, OCD, PTSD, ADHD, ODD, eating disorders, and substance use. She uses supportive therapy, solution-focused therapy, and cognitive behavioral therapy to help clients feel heard, understood, and empowered.

Weatherspoon is passionate about breaking the stigma around mental health. She encourages her clients to speak up, get help, and take control of their mental wellness. Her approach is based on the Mental Health Recovery Model, which focuses on hope, healing, and building a life beyond diagnosis.

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Dr. Breaunnah Bloomer Jackson is a board-certified Child & Adolescent Psychiatrist who earned her undergraduate degree from Howard University and a master’s in biological sciences from Mississippi College. She completed medical school at LSU Health Sciences Center – Shreveport, followed by a general psychiatry residency and child & adolescent psychiatry fellowship at LSU Health Sciences Center – New Orleans, where she served as Chief Fellow.

Dr. Breaunnah Bloomer Jackson creates a welcoming, supportive space for children, adolescents, and their families. She takes a compassionate and collaborative approach to care, focusing on medication management while integrating supportive therapy, brief cognitive techniques, parent guidance, psychoeducation, and motivational strategies. When ongoing therapy is needed, she works closely with therapists to ensure connected, comprehensive care.

She is passionate about meeting young people where they are, honoring their individuality, and working with families to navigate challenges together. With a strong foundation in human development and a deep commitment to equity, Dr. Bloomer Jackson is building a practice that supports the whole person—and every story.

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