Our Team
Administrative Team
The administrative team of the Department of Orthopaedic Surgery is a vital component of the department's success. Located in the Lawrence J. Ellison Ambulatory Care Center, the team is responsible for seamlessly operating the department's programs and services, delivering unparalleled support to the faculty and staff. With diverse backgrounds and extensive experience, the team brings a wealth of skills and expertise to their roles, making them an essential part of the department's success.
Chief Administrative Officer
Joseph MacDonald, M.B.A.
jemacdonald@ucdavis.edu
916-734-8154
Management Service Officer
Rieko Ringo
ruringo@ucdavis.edu
916-734-7103
Finance Analyst
Sharon Misewich, CRA
Research and Finance Analyst
sbmisewich@ucdavis.edu
916-734-4280
Academic Personnel
Shannon Untalasco
Academic Personnel Manager
suntalasco@ucdavis.edu
916-734-3889
Vacant
Academic Personnel/Research Analyst
Administrative Staff
Mazie Grigas
Administrative Assistant to Trauma and Pediatrics Services
mjngai@ucdavis.edu
916-734-2182
Rebecca Misner
Administrative Assistant to Foot/Ankle and Sports Medicine Services
rjmisner@ucdavis.edu
916-734-5874
Administrative Assistant to Hand Services
nsnisson@ucdavis.edu
916-734-3678
Debra Sample
Executive Analyst to the Department Chair
dasample@ucdavis.edu
916-734-7353
Madeline Snoke
Front Desk/Research Administrative Assistant
mfsnoke@ucdavis.edu
916-734-3885
Education Programs
Margaret MacNitt
Education Programs Manager
mlmacnitt@ucdavis.edu
916-734-2807
Margaret Allen
Education Programs Coordinator
malallen@ucdavis.edu
916-734-4025
Delia Luna
Fellowship Coordinator
dbluna@ucdavis.edu
Research Staff
Chancey Sweeney, Ph.D., M.P.A., M.H.A.
Clinical Research Supervisor 2
cassweeney@ucdavis.edu
916-734-6017
Julia Martin, CCRC
Senior Research Coordinator
jyhmartin@ucdavis.edu
916-734-8175
Maya Porter, B.S.
Clinical Research Coordinator
mtporter@ucdavis.edu
916-734-4216
Gaby Zumaran, CCRC
Senior Research Coordinator
gzumaran@ucdavis.edu
Oak Park Research Lab
Ivonne Palma
Lab Manager
ipalma@ucdavis.edu
Marketing and Communications
Sonia Kumar
Communications Specialist
sekumar@ucdavis.edu