Megan Crochet, MD

Dr. Tiffany Abtahi is board certified in adult psychiatry and has been in practice for over 6 years. She completed her residency at Icahn School of Medicine, Elmhurst Hospital Center program where she served as Chief Resident in her final year. After completing her residency training, Dr Abtahi worked as a staff psychiatrist in the VA Medical Center focusing on PTSD, depression, and anxiety. Dr. Abtahi has held an academic appointment at the University of UT Southwestern medical school and has spent her professional career supervising/teaching medical students and psychiatry residents. Dr. Abtahi's practice focuses on medication management and providing psychoeducation to her patients. However, if indicated, Dr. Abtahi may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. Abtahi has experience treating a large variety of mental health conditions across a variety of populations. She strongly believes in tailoring treatments through a holistic and patient-centered approach based on individual and multi-faceted histories. Dr. Abtahi looks forward to working with you.

Dr. Jessica Marz is a psychiatrist who completed her undergraduate studies at the University of Florida and earned her medical degree from the Florida State University College of Medicine. She went on to complete her psychiatry residency at the University of Florida College of Medicine Jacksonville. Dr. Marz treats adults experiencing a variety of mental health concerns, including anxiety, depression, PTSD, OCD, ADHD, bipolar disorder, and adjustment-related challenges.

Dr. Marz is a compassionate and thoughtful psychiatrist committed to holistic, patient-centered, evidence-based care. She approaches each individual with warmth and without judgment, fostering a therapeutic environment built on open communication and trust. She believes that strong rapport is essential to achieving meaningful progress in treatment.

Dr. Marz combines medication management with supportive psychotherapy, incorporating cognitive-behavioral techniques and motivational interviewing. She customizes each treatment plan to align with the patient’s personal goals and evolving needs, recognizing that healing is a highly individualized journey.Dr. Jessica Marz is a psychiatrist who completed her undergraduate studies at the University of Florida and earned her medical degree from the Florida State University College of Medicine. She went on to complete her psychiatry residency at the University of Florida College of Medicine Jacksonville. Dr. Marz treats adults experiencing a variety of mental health concerns, including anxiety, depression, PTSD, OCD, ADHD, bipolar disorder, and adjustment-related challenges.

Dr. Marz is a compassionate and thoughtful psychiatrist committed to holistic, patient-centered, evidence-based care. She approaches each individual with warmth and without judgment, fostering a therapeutic environment built on open communication and trust. She believes that strong rapport is essential to achieving meaningful progress in treatment.

Dr. Marz combines medication management with supportive psychotherapy, incorporating cognitive-behavioral techniques and motivational interviewing. She customizes each treatment plan to align with the patient’s personal goals and evolving needs, recognizing that healing is a highly individualized journey.

Dr. Tetyana Tarnavsky is a board-certified psychiatrist trained in Adult Psychiatry. She attended Dnipropetrovsk State Medical Academy in Ukraine where she received her M.D., M.S. and Ph.D. degrees in Psychiatry. Dr. Tarnavsky completed her residency at Harvard South Shore Psychiatry Residency Training Program in MA, where she was elected chief resident. Dr. Tarnavsky has an extensive research experience in Ukraine and the USA. She had studied computer addiction for her dissertation; had multiple abstracts and presentations; published several articles in peer-reviewed psychiatric journals as well as a book entitled Computer Addiction: Formation, Diagnosis, Correction and Prophylaxis. She has helped organize international conferences with the goal of improving access to and quality of healthcare in Dnipropetrovsk, Ukraine, and providing a national model for health care reform. Dr. Tarnavsky has worked with a variety of patients with diverse backgrounds in a Community Health Center and in the Partial Hospitalization Program as well as supervised medical students, psychiatry residents, and nurse practitioners. She has been a lecturer on psychiatry at Harvard Medical School and was involved in the training of psychiatry residents in the Harvard South Shore Psychiatry Training Program. Her primary focus has been on treating adults with depression, anxiety, post traumatic stress disorder, adjustment disorder, ADHD and other disorders. Dr. Tarnavsky strives to provide quality and compassionate treatment to individuals and their families.‍

Dr. John Hendrick is a practicing psychiatrist who has recently served as medical director for clinical services at Erlanger Behavioral Health Hospital in Chattanooga, TN. After several years of private practice, he had served as Chief of Inpatient Psychiatric Services and then as Chief of Psychiatry at Mountain Home VA Medical Center. During his time at Mountain Home VA he was also a Professor of Psychiatry at Quillen Medical School at East Tennessee State University where he taught General Psychiatry courses and the Neurosciences of Psychiatry. His specialties include affective and anxiety disorders and he has specific expertise in neuropsychiatry, psychopharmacology and alternative treatments for affective disorders. He is a Distinguished Life Fellow of the American Psychiatric Association and is a Past President of both the Tennessee Psychiatric Association and the Southern Psychiatric Association. He has been awarded a Distinguished Service Award from the United States Public Health Service. He has been twice named the Outstanding Teacher Award from the ETSU Psychiatry Residency program and was awarded Course Director of the year for the Neurosciences residency course he developed. He holds an Irma J. Bland Award for Excellence in Psychiatric Education from the APA. He has an extensive psychiatric background in practice and as a teacher. He practices psychotherapy from an Eriksonian perspective and is well versed in individual and psychodynamic psychotherapies.

Dr. La Haie is board certified in adult psychiatry and has been in practice for over 15 years.  She completed her residency at Banner Good Samaritan (now Banner University) Hospital in Phoenix, Arizona.  After completing her residency training, Dr. La Haie worked with the severely mentally ill population for several years, then transitioned to a private practice setting that offered the interventional options of transcranial magnetic stimulation and ketamine infusion.  Most recently, Dr. La Haie has worked at the Phoenix VA treating veterans, with focus on PTSD, depression and anxiety.  Dr. La Haie has held an academic appointment at the University of Arizona Medical School and has spent her professional career supervising/teaching medical students and psychiatry residents.

Dr. La Haie's practice focuses on medication management and providing psychoeducation to her patients. However, if indicated, Dr. La Haie may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome.

Dr. La Haie has experience treating a large variety of mental health conditions across a variety of populations. She strongly believes in tailoring treatments through a holistic and patient-centered approach based on individual and multi-faceted histories. Dr. La Haie looks forward to working with you.

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Megan O’Brien is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with experience in inpatient, outpatient, and emergency mental health settings. She earned her NP degree from UCSF, the top-ranked program in the country at the time. In addition to clinical work, she enjoys teaching and is passionate about training the next generation of compassionate psychiatric nurse practitioners.

Megan believes in meeting patients where they are, offering empathy, respect, and acceptance. She values open communication and sees treatment as a collaborative process. Her approach empowers patients to take the lead in their care while she supports them as a partner and guide along the way.

Megan begins by listening carefully to each patient’s story and asking relevant questions to understand their needs. Together, she and the patient build a tailored treatment plan that aligns with their goals. Her focus is on reducing mental health symptoms and helping people experience greater freedom and flexibility in their lives.