Parihar, Wang and Wilson-Flewelling Join MIR Faculty

Photo of three new August faculty members.

Three new faculty members have joined Mallinckrodt Institute of Radiology (MIR) at Washington University School of Medicine in St. Louis.

Headshot of Ashwin S. Parihar, MD.

Ashwin Singh Parihar, MD, joins the nuclear medicine division as an assistant professor. He first joined MIR in 2021 as a research associate in the lab of Richard Wahl, MD, and then was accepted into the nuclear medicine residency program in 2023, where he served as co-chief resident. Parihar has published extensively in radiology and nuclear medicine and received several commendations, including the RSNA Trainee Research Prize and ACNM Best Abstract Award in 2023 and 2024.

He earned his medical degree from Veer Chandra Singh Garhwali Government Medical Sciences and Research Institute in India and completed his residency at the Postgraduate Institute of Medical Education and Research.


Wei Wang, MD, PhD, returns to MIR as an assistant professor in the neuroradiology section. He previously worked as a senior scientist at St. Jude Medical (now Abbott) and as an assistant professor at the University of Pittsburgh. Wang joined MIR’s faculty in 2021, briefly worked in private practice and now is back in academic medicine. His expertise includes functional brain mapping, machine learning and software engineering.

Wang earned his medical degree from Peking University and a doctorate in biomedical engineering from Washington University. He completed a neuroradiology fellowship and diagnostic radiology residency at MIR.


Scott Wilson-Flewelling, MD, joined the physician practice and provides services at multiple community radiology sites. He previously worked as a researcher for Saint Louis University’s Department of Microbiology and a pediatric cardiologist at St. Louis Children’s Hospital.

After earning a bachelor’s degree in biochemistry from Hobart College, Wilson-Flewelling earned his medical degree from Saint Louis University School of Medicine. He is an alumnus, having completed his diagnostic radiology residency and advanced abdominal imaging fellowship at MIR.