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 from 1993 until 2019. At Kern Medical, he has helped teach over 300 physicians for 26 years until retiring from Kern Medical in 2019. Since Retiring from Kern Medical, Dr. Gilli is working full time at Mesa West Medical. 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.
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.
Nurse Practitioner (Retired)
Kevin Nelson obtained his Family Nurse Practitioner and Physician Assistant Certificates from Stanford University. Kevin Nelson worked at Mesa West Medical from 2002 until the end of 2019 when he retired. Kevin is currently enjoying his retirement in Grover Beach but will occasionally will be filling in for Dr. Gilli (when Dr. Gilli is off on vacation).
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 email@example.com
Front Office and Appointments
Jeanette works in the front office, checking in patients, and working on appointments. She also assists Brenda on billing and CeCe on authorizations. She has been at Mesa West Medical since 2004. Her favorite team is the Oakland Raiders (football). Jeanette can be reached at firstname.lastname@example.org
Front Desk and Medical Assistant Supervisor
CeCe has been working at Mesa West Medical since 1999. She id the primary check out receptionist and medical assistant supervisor. She also overseas authorizations and medical record requests. Her favorite teams are the Los Angeles Rams (football) and the St. Louis Cardinals (baseball). CeCe 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
Colleen has been working at Mesa West Medical since July 2019. She primarily works with Dr. Gilli. She loves football and University of Oregon is her favorite team. Colleen can be reached at email@example.com