Dr. John Botsis

Dr. Onwueme graduated with Distinction from Yale University with dual BSc/MSc degrees in chemistry and received MD and PhD degrees from Weill Cornell Medical College. He completed his Internal Medicine residency at Brigham and Women’s Hospital (Clinical Fellow Harvard Medical School) and his Gastroenterology fellowship at Johns Hopkins University School of Medicine. He is currently the Director of clinical trials at Woodholme Gastroenterology and has an ardent interest in the role of microbial metabolites in gut diseases. Dr. Onwueme prizes commitment to quality and compassionate patient care to which he devotes his practice. He has expert knowledge in gut microbiology and a special interest in diarrheal diseases, disordered gut motility, autoimmune and inflammatory bowel disease. Dr. Onwueme is highly rated in 43 conditions, according to our data. His clinical expertise encompasses Gastric Dysmotility, Diverticular Disease, Diarrhea, Endoscopy, and Gastrectomy. Dr. Onwueme is board certified in American Board Of Internal Medicine and ABIM - Gastroenterology - Gastroenterology, 2012. Dr. Onwueme is currently accepting new patients.

Andy Tsai, MD serves as a hospitalist at Valley Medical Center, specializing in the care of hospitalized patients. He strives to improve the inpatient experience and aims to help patients and their families navigate the complex hospital environment through optimal teamwork, collaboration, and communication. Dr. Tsai helps his patients better understand their illness so they can be active participants in their care decisions. Dr. Tsai received his bachelor’s degree in Fine Arts from Amherst College and received his medical degree from Albany Medical College. He completed his residency in internal medicine at Virginia Mason Medical Center and has been providing care as a hospitalist at Valley Medical Center since 2011. He currently serves as the Assistant Medical Director of Hospitalists. When not in the hospital, Dr. Tsai enjoys spending time with his wife and 2 boys in the outdoors. His interests and passions include hiking, biking, cooking, and playing tennis. Dr. Tsai is highly rated in 1 condition, according to our data. His clinical expertise encompasses End-Stage Renal Disease (ESRD), Chronic Inflammatory Response Syndrome (CIRS), Heart Failure with Preserved Ejection Fraction (HFpEF), Gastrostomy, and Colonoscopy. Dr. Tsai is currently accepting new patients.

Michael Previti, MD, received his medical doctorate at the University of Massachusetts after obtaining his undergraduate degree in the biological basis of behavior from the University of Pennsylvania. Dr. Previti completed his internship and neurology residency at the University of Washington, as well as a vascular neurology fellowship. He served two years as a neurohospitalist in Winston-Salem North Carolina at Forsyth Medical Center. During that time, Dr. Previti actively met with community groups to help spread the word about stroke prevention and symptom recognition. “I believe that public education, in addition to motivating providers to participate in a team-based approach for acute stroke care and creating and maintaining an efficient system of care for our acute and sub-acute stroke patients, can have a significant, positive impact on the community,” he says. When he’s not working, Dr. Previti enjoys photography, traveling, skiing and spending time with friends and family. Dr. Previti is highly rated in 7 conditions, according to our data. His clinical expertise encompasses Stroke, Moyamoya Disease, Alien Hand Syndrome, and Hemiplegia. Dr. Previti is currently accepting new patients.