Internal Medicine Residency

Program Leadership

Kevin S. Fleming, M.D. – Program Director (Internal Medicine)

Dr. Fleming was introduced to healthcare at a young age, having come from a family of physicians. He found Internal Medicine to be intellectually stimulating and enjoyed the idea of taking care of a patient from the start to the finish of any medical issue they may be experiencing.

Michael J. DeLong, M.D. – Associate Program Director (Nephrology)

Dr. DeLong is a Nephrology Specialist in Tucson, AZ with 23 years of experience in the medical field. Dr. DeLong is experienced in hypertension, general nephrology and chronic kidney disease.

Renae L. Trapp, C-TAGME – Program Coordinator

Renae is originally from the Detroit Metropolitan area, where she was the owner and directress of a Montessori infant and toddler childcare for more than a decade. She also had a ceramic studio for quite some time and, in fact, her undergraduate degree from the University of Michigan is in Fine Art.

Ashini P. Shah, M.D. – Core Faculty (Internal Medicine & Geriatrics)

Dr. Ashini Shah is a geriatrician in Tucson, Arizona and is affiliated with multiple hospitals in the area, including Northwest Medical Center-Tucson. She received her medical degree from N.H.L Municipal Medical College and has been in practice for more than 32 years.

Landon Casaus, D.O. – Core Faculty (Internal Medicine)

Landon Casaus, DO is an Internal Medicine physician and Site Lead at Oro Valley Hospital. Dr. Casaus’ patients find his to be a great communicator who takes time to explain his diagnosis and treatment plan.

Elias S. Kakish, M.D. – Pulmonary & Critical Care

Dr. Kakish had a passion to help people since he was a child – and he loves the satisfaction that comes with diagnosing and treating the variety of lung and sleep disorders that detract from so many people’s quality of life. It is important to him to invest time in explaining things to each patient. When he reviews lung images with someone, or shows them the results of their sleep study, they can see what the problem is with their own eyes. This builds their confidence and trust in Dr. Kakish as we work together on a treatment plan.

Kimball Kaufman, D.O. – Teaching Faculty (Internal Medicine)

Dr. Kimball Kaufman has been a hospitalist at Northwest Medical Center since July 2021. Professional interests include pharmacology, antimicrobial stewardship.

Sujatha Reddy, M.D. – Teaching Faculty (Internal Medicine)

Dr. Sujatha Reddy grew up in India, where she went to medical school before doing her post graduate training in New York City and Baltimore. Dr. Reddy was trained in internal medicine, following which she sub-specialized in infectious diseases and critical care. These fields solidified her passion in treating the entire spectrum of ailments in her patients. She has been practicing as a hospitalist here in Tucson for the past 27 years.

Hoang M. Thai, M.D. – Core Faculty (Cardiology)

Dr. Thai specializes in complex interventional cases such as patients with impaired heart function and those suffering from cardiogenic shock. He also performs high risk cardiac interventions such as reopening chronic total occlusion (CTO), left main interventions and in those patients who have been turned down for bypass surgery due to increased risks. He is interested in many new technologies emerging for cardiac care that allow physicians to better care for their patients.