Dr. Gilli is a Bakersfield native. He attended West High School and graduated from the USC School of Medicine in 1983. Dr. Gilli is Board Certified in Internal Medicine. He is an Assistant Professor of Medicine at UCLA teaching at Kern Medical Center since 1993. At KMC, he has help teach over 300 physicians in the last 25years. He is also a Fellow at the American College of Physicians. In early 2009, Dr. Gilli underwent a total hip replacement and has returned to running. He is an avid walker, runner, cyclist, and skier.
Kevin Nelson obtained his Family Nurse Practitioner and Physician Assistant Certificates from Stanford University and worked in Family Practice in Taft and Bakersfield for 6 years prior to joining Mesa West. Kevin Nelson has been at Mesa West Medical since 2002. Kevin enjoys cycling and hiking.
Tracy Simonsen received her Bachelor’s Degree from Cal State University Bakersfield in Nursing. She then worked in Intensive Care Medicine for the next 7 years at Kern Medical Center. She obtain her Masters degree from UCLA in Nursing with a specialty as an Acute Care Nurse Practitioner. Tracy Simonsen has been at Mesa West Medical since 1996. Tracy enjoys tennis and golf.
Office Manager and Billier
Brenda is the office manager and primary biller. She has been at Mesa West Medical since 2002. You can reach her at firstname.lastname@example.org
Front Office and Authorizations
Jeanette works in the front office, checking out patients, and working on authorizations. She has been at Mesa West Medical since 2004. Her favorite team is the Oakland Raiders (football). Jeanette can be reached at email@example.com
CeCe has been working at Mesa West Medical since 1999. She primarily works with Dr. Gilli. She overseas Medical Record requests. Her favorite teams are the Los Angeles Rams (football) and the St. Louis Cardinals (baseball). CeCe can be reached at firstname.lastname@example.org
Jaqueline has been working at Mesa West Medical since 2018. She primarily works with Kevin Nelson. She speaks fluent Spanish (bilingual). Jaqueline can be reached at email@example.com
Cassidy has been working at Mesa West Medical since 2018. She primarily works with Tracy Simonsen. Her long-term goal is becoming a nurse. Her favorite team is the Los Angeles Rams (football). Cassidy can be reached at firstname.lastname@example.org
Front Office and Phone Receptionist
Julia works in the front office and her primary duties include checking in patients, and phone receptionist. Starting in 2019, she is our newest team member at Mesa West Medical . Her favorite team is the Oakland Raiders (football). Julia can be reached at email@example.com