Insight NeuroCognitive Health (INH) is part of the Flint-based Insight Institute of Neuroscience & Neurosurgery campus and an off-campus site of Insight Surgical Hospital. Our team of integrated medical professionals is committed to treating all aspects of mental health and addiction, co-occurring disorders, combating the growing opioid crisis, and healing the residents of our community. As a world-renowned research center, we are driven to create innovative techniques and care principles in our pursuit to improve the field of medicine and are passionate about helping others regardless of any obstacles or challenges that may lie ahead.

meet our neurocognitive health team

Trisha Taylor

N.P. Psychiatry

Trisha has been in the nursing field for many years and has worked in various psychiatric inpatient units
and outpatient clinics as well as working in psychiatric research. She has been a nurse practitioner for
the past five years and enjoys working in the psychiatric field treating patients with various mood and
psychiatric disorders. In her spare time, she enjoys spending time with her family and children. She
especially enjoys vacations at the beach, water sports and taking cruises.

Gail Johnson, MSN, PMH-BC, ANP-BC

Psychiatric Mental Health Nurse Practitioner

Gail Johnson is Board Certified a psychiatric mental health nurse practitioner (PMHNP-BC) specializing in the diagnosis and management of mental health disorders in children, adolescents, young adults, and seniors. She also works closely with her patients’ medical doctors to collaborate in managing the use of therapy and medication. Gail is committed to serving the community, treating patients of all ages. During her free time, Gail enjoys spending time with her husband, 5 children, and 6 grandchildren, as well as traveling, and sewing.

Diamond Terry


Diamond Terry, LMSW, CHW, is a clinical therapist specializing in assisting individuals with learning healthy coping skills, parenting skills, and ways to manage lifestyle changes. A Michigan State University graduate, Diamond obtained a master’s degree in social work with a clinical focus. She completed her undergraduate studies at Saginaw Valley State University, earning a bachelor’s degree in social work.

Diamond has experience in a variety of roles, including therapist, clinical supervisor, case management, and family support, working with children, families, couples, and geriatrics. Diamond’s therapy motto is “take care of you” and she has dedicated her career to eliminating the societal norms of not seeking mental health services when they are needed, encouraging individuals to take care of their physical and mental health.

Since joining Insight Institute of Neurosurgery and Neuroscience, Diamond has worked with a wide range of individuals and enjoys seeing her clients develop a healthier self. By introducing them to new ways of living, they can see life through a new lens.

Omer Abid, MD


Dr. Omer Abid is a physician board certified in preventive medicine with his residency and MPH in epidemiology from the University of Michigan. He is an EIS (Epidemic Intelligence Service) alumnus from the CDC. Dr. Abid has worked abroad in public health in multiple chronic disease programs for several years mostly in public health programming but he has also published in the peer-review literature. He is currently an Addiction Medicine physician at Insight Institute of Neurosurgery & Neuroscience.

Timothy Franke, PsyD., LP

Clinical Psychologist/Neuropsychologist

Dr. Timothy Franke completed his graduate training in clinical psychology at the Michigan School of Psychology (formerly known as MiSPP) in 2016 with training emphasis on neuropsychological testing and assessment.

Dr. Franke focuses on providing patient-centered care. He has extensive experience in pediatric and adult neuropsychological assessment, as well as assessment and evaluation of emotional/behavioral disorders, neurodevelopmental and neurodegenerative disorders, and traumatic brain injuries.

Sushruth Shenava, M.D.

Addiction Physician

Dr. Sushruth Shenava has been trained in anesthesiology, pain management, and addiction treatment and has been in practice since 2011. After anesthesiology training, he began focusing solely on pain management. Dr. Shenava offers a variety of procedural, behavioral, and medical options for the treatment of chronic pain, with an emphasis on improved functionality and daily living.

Joseph M. Masternick Jr., D.O.

Addiction Medicine & Family Medicine

Dr. Joseph Masternick graduated from Des Moines University College of Osteopathic Medicine. He completed his post-graduate training at St. John Hospital in Detroit. He is board-certified in addiction medicine and family medicine. He is a Diplomat of the American Society of Addiction Medicine and the American Board of Addiction Medicine.

He is a physician evaluator for both the Licensing and Regulatory Affairs (LARA) and Health Professional Recovery Program (HPRP) of the state of Michigan. He has served as the medical director of a hospital acute care inpatient substance abuse unit and affiliated ambulatory detoxification program.

He currently serves as a trustee for the American Osteopathic Academy of Addiction Medicine, and he is the medical director of the Wellness Clinic Chemical Dependency Treatment Center, affiliated with our Insight Wellness Center. He is a consultant to Beaumont Health System Chronic Pain Consortium, which is a strategic planning entity aimed at the redesign of the model of care of pain management services of all eight hospitals.

His lifelong goal is to create departments of addiction medicine in every hospital in the country in order to educate physicians to better recognize and treat chemical dependency.