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Our Practice

VIDA was established by Dr. Robert Armstrong in 1971. Since then, the practice has only grown, and now includes Dr. Sumit Majumder and Dr. Rachana Palnitkar. Dr. Robert Armstrong passed away in 2014.

Dr. Armstrong's vision was always to provide the best possible infectious disease care to the bay area residents by recruiting and further training highly accomplished ID physicians. VIDA doctors consult at Good Samaritan Hospital and El Camino Hospital (Los Gatos). Drs. Armstrong, Majumder and Palnitkar have all previously served as volunteer faculty at Santa Clara Valley Medical Center.

Our Doctors
Sumit Majumder, MD

Dr. Majumder joined the practice in 1992. He is board certified in Infectious Disease, and the Medical Director of Antibiotic Stewardship at Good Samaritan Hospital. He completed his residency at the United Presbyterian Hospital (NJ) and was an ID fellow at SUNY Syracuse. 

Rachana Palnitkar, MD

Dr. Palnitkar is a board certified Infectious Disease physician who joined the practice in 2010. She is Chair of Infection Control at Good Samaritan Hospital. Dr. Palnitkar completed her residency at Harbor Hospital in Baltimore, and her fellowship in ID from the University of Florida (Shands Jacksonville). During her training, she also spent time at the NIH and the National Jewish Hospital in Colorado, focusing on research in fungal and respiratory infectious diseases.

In memoriam
Robert Armstrong, MD


Dr Armstrong founded the practice in 1971. He was trained at Stanford hospitals and enjoyed the practice of Infectious Diseases in the the community. He was frequently referred to as the doctor's doctor. We are sorry to have lost him to an accident in 2014. His memory and teachings will forever be with us.

Our Staff
Amy Malvase​


Office Manager 

Jennifer Leighton


Medical Assistant

Kimberley Martin, Brendan Hazard, Nicole Scott  
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