A member of our Neurology team, Maria Gonzales, FNP-C, is a nurse practitioner who works closely with neurologists and other clinical staff to assess, diagnose and treat patients with neurological conditions such as stroke, epilepsy, multiple sclerosis, Alzheimer’s disease and chronic headache. Born and reared in the Philippines, she earned her Bachelor of Science in Nursing before emigrating to the United States in 2005. She practiced 17 years in healthcare settings in New York. In 2017 she joined Trinity Health, where she cared for patients in the Emergency/Trauma Center before completing her Master of Science degree in Advanced Nurse Practice from Walden University, Minneapolis. Maria is certified by the American Academy of Nurse Practitioners. She enjoys traveling when she’s not taking care of patients.
Amanda Weidler, FNP-C
Amanda Weidler, FNP-C, serves in Trinity’s Cardiology Department as a nurse practitioner. She works closely with cardiologists and other clinical staff to provide comprehensive cardiovascular care, including health assessments, care planning, writing prescriptions, and counseling patients on lifestyle changes that can reduce the risk of cardiovascular illness. Originally from Killdeer, Amanda earned her Bachelor of Science degree in Nursing from the University of North Dakota, Grand Forks. She practiced in Bismarck and at Trinity Hospital in Minot, serving patients in the ortho-neuro and post-anesthesia care units. She returned to UND to complete her Master of Science/Family Nurse Practitioner degree. A member of the American Association of Nurse Practitioners and the North Dakota Nurse Practitioners Association, Amanda resides in Velva with her husband, Matt, and their two children.
Samir Turk, MD
Dr. Turk is board certified in general cardiology and interventional cardiology. A graduate of the Royal College of Physicians and Surgeons, Dublin, Ireland, he completed his residency in Internal Medicine at Worcester City Hospital and University of Massachusetts Medical Center, Worcester, MA. He completed fellowships in peripheral vascular medicine and cardiology at Cleveland Clinic Foundation and MetroHealth Medical Center in Ohio. He was an interventional cardiologist with Health Center – Medical Arts from 1994-1999. He was associated with Ohio Heart Care, Inc., Canton, Ohio, before returning to Minot.
Mary Sadler, FNP-C
A nurse practitioner in Trinity’s Neurology Department, Mary Sadler, FNP-C, works closely with neurologists and other clinical staff to assess, diagnose and treat patients with neurological illnesses and injuries. She earned her Bachelor of Science in Nursing in 1998 from Minot State University and practiced 10 years with Trinity Health in the Rehabilitation, Ortho/Neuro and Emergency/Trauma departments. In 2010 she received her Master of Science/Family Nurse Practitioner degree from the University of Mary in Bismarck. Since then she has served patients in family practice and emergency settings, most recently serving as an Occupational Health/Family Practice nurse practitioner with Sanford Health. She’s a member of the American Academy of Nurse Practitioners, the North Dakota Nurse Practitioners Association, the American Academy of Neurology and the American College of Occupational and Environmental Medicine.
Rosina Medel, MD
Rosina Medel, MD, is a neurologist board certified by the American Board of Psychiatry and Neurology. Dr. Medel provides specialized care for patients dealing with the full spectrum of neurological disorders affecting the brain, nervous system, peripheral nerves and muscles. She received her early medical training in the Philippines, earning a nursing degree and later a medical doctorate from the University of Perpetual Help System. She migrated to the United States, where she completed a preliminary residency in Internal Medicine at Nassau University Medical Center, East Meadow, NY. She fulfilled her Neurology residency and performed a fellowship in Clinical Neurophysiology at JFK Medical Center in Edison, NJ, where she served as chief resident her final year and earned numerous awards for academic and clinical excellence. Dr. Medel is a member of the American Academy of Neurology.
Valentine Chikwendu, MD
Valentine Chikwendu, MD, is a board certified specialist in general cardiology. He provides diagnosis and treatment to people with cardiovascular disease, and also performs invasive/non-invasive cardiology procedures. A graduate of the University of Nigeria College of Medicine, Dr. Chikwendu completed his internal medicine residency and adult cardiology fellowship at Cooke County Hospital in Chicago. He is specially trained to assess heart function by utilizing nuclear cardiology studies and is certified by the Board of Nuclear Cardiology.