Our Current Pediatric Rheumatology Fellows


Nicholas McClellan, DO

Fellow in Training - Pediatric III
Dr. McClellan received his Doctor of Osteopathic Medicine degree from the Western University of Health Sciences College of Osteopathic Medicine of the Pacific. He completed his Pediatric Residency Training at Marshfield Clinic in Marshfield, Wisconsin. Dr. McClellan will complete his Pediatric Rheumatology Fellowship in 2024.

Andrew Grim

Andrew Grim, M.D.

Categorical Fellow II
Dr. Grim received his MD degree from the University of Illinois College of Medicine-Rockford. He completed his pediatric residency at the Naval Medical Center in San Diego. He spent four years working in Yokosuka, Japan as a General Pediatrician. Dr. Grim returned to San Diego and worked for two years as an attending and the Nursery Rotation Director. He moved to Michigan with his wife and his three children.

Marianne Kerski, M.D.

Fellow in Training - MedPeds II
Dr. Marianne Kerski graduated from the University of Minnesota in 2019.  She came to the University of Michigan and completed a Med-Peds Residency in 2023.