Physician Assistant Faculty and Staff

Catherine Oms was raised locally and graduated from Loma Linda Academy in 1997. She received an Associate's Degree in Nursing from Southwestern Adventist University in 1999. She obtained her Bachelor's Degree in Kinesiology from Cal State University, San Bernardino in 2003, both Master's Degree in Physician Assistant Sciences in 2007 and Doctoral degree in Public Health with an emphasis in Preventive care in 2020 from Loma Linda University. Since that time, she has worked in pediatrics, women's health, family practice and prevention/wellness specialties. She completed the OB/GYN Residency Program for PA's from Arrowhead Medical Center in 2009. She returned to Loma Linda University in 2011 as full-time faculty and was a Didactic Coordinator for the Physician Assistant Program for 6 years and Associate Program Director for 3 years.  She is currently the Chair for the Physician Assistant Program. Her responsibilities include assisting the Program Director in program needs, implementing the mission and vision of the institution and participate in teaching and research possibilities.

Courtney Marquez received her Bachelor of Science degree in Kinesiology with a concentration in Clinical Exercise Science and Minor in Sociology from California State University, Fullerton in 2009. She obtained her Master's degree in Physician Assistant Sciences in 2014 from Loma Linda University and has worked in General Pediatrics since graduation.  She returned to Loma Linda University in 2015 as full-time faculty, where she has worked both didactically and clinically for the Physician Assistant Department.  Professor Marquez currently serves as the Program Director, where her duties include overseeing program accreditation as well as the didactic and clinical phases of the program.  She provides lectures in Preventive Medicine, Physical Diagnosis, Clinical Medicine, Pediatrics and PA Professional Issues. Additionally, she facilitates the Inter-Professional Education Workshop during the didactic phase of the program. She plans to pursue her doctorate degree in 2021.

Wessam Labib graduated from the University of Illinois, Chicago, Family Medicine Residency program in 2008. Simultaneously, he received a Master’s of Public Health in Health Policy and Administration that same year.  In 2009, he completed a Geriatric Medicine Fellowship at UCLA and a Medical Student Education Fellowship from the Society of Teachers of Family Medicine in 2012. Currently, he practices Family/Geriatric Medicine at the Loma Linda University Family Medical Group. He is also Director of the Adult Specialty Clinic (ASC) - Memory clinic.  He is an Assistant Professor for the Department of Family Medicine, School of Medicine and School of Nursing. He is also the Geriatric Medicine Rotations Director – Family Medicine Residency.  He is the Director of Medical Student Education – Department of Family Medicine and was appointed the PA program Medical Director in 2016.  He is passionate about education and believes strongly in the value of the multidisciplinary approach to education and to healthcare.

Rasha Abdrabou received her Master’s in Public Health in 2002 and her Doctorate in Public Health in 2009, both from Loma Linda University.  She has since taught in undergraduate and graduate programs at various universities, including Cal Baptist University, Cal State Dominguez and West Coast University. She has also worked in the field of community nutrition for various public health programs such as Healthy Smiles, Early Head Start and Champions for Change.  She returned to Loma Linda University in 2018 as full-time faculty for the Physician Assistant Department.  Dr. Abdrabou is also Director of Education Assessment, a position that focuses on ensuring the delivery of quality education standards and the continuous improvement of the clinical and didactic curricula. Dr. Abdrabou’s research interests include applying public health practices in clinical settings and development, implementation and dissemination of interventions to combat chronic disease.  She is also interested in pedagogical research centered around practices of learning and teaching assessments.

Mark received his Bachelor’s in Biology from the University of Redlands in 1976.  One year later, he completed a Master’s in Genetics at the University of California in Riverside.  This was followed by four years of PhD studies in the Faculty of Medicine at the University of British Columbia.  Mark taught high school and university classes for 25 years before returning to southern California and entering the LLU PA program.  His clinical experience includes Emergency Medicine, Family Medicine, and Urgent Care. Mark is currently the Didactic Director for the PA program, with responsibilities for instruction and curriculum delivery.

Erin Gysbers was born and raised in Pennsylvania where she earned her Bachelor's degree in Biology from Pennsylvania State University in 2004. She went on to earn her Master’s degree in Physician Assistant Studies from St. Francis University in 2007. Upon graduation, Erin moved to California to participate in the OB/GYN residency for PAs at Arrowhead Regional Medical Center. She graduated from the residency in 2008. Since that time, Erin has worked in women's health and orthopedics. She joined the Loma Linda Physician Assistant program in 2017 as full-time faculty and is a Didactic Coordinator.  Her responsibilities include coordinating and teaching Clinical Medicine, Physical Diagnosis, Women’s Health, and Clinical Correlations.  She currently is pursuing her doctorate degree.

Shannon Rivera is a Southern California native where she earned her Bachelor of Science Degree in Emergency Medical Care from Loma Linda University in 2011, all while concurrently working as an Emergency Medical Technician in a local community Emergency Department. She then went on to earn her Master’s Degree in Physician Assistant Sciences in 2014. Since graduation Professor Rivera has worked as an Emergency Department provider at three rapid-paced, high volume community hospitals with these sites holding designations as Primary Stroke, STEMI, and Pediatric centers. In 2021, Shannon returned to join the Loma Linda Physician Assistant Program as full-time faculty as a Didactic Coordinator. Her responsibilities include instruction for Clinical Medicine and Diagnostic techniques.

Kristin Batla was born, raised and educated in Southern California, where she received her undergraduate education in Neuroscience at the University of California, Riverside followed by a Masters in Clinical Research Administration. After working as a clinical research director and anesthesia technician at Loma Linda University Medical Center, she pursued an education in Physician Assistant studies at the Moreno Valley College in 2014. She then attended post-graduate fellowship training in OB/GYN at Arrowhead Regional Medical Center and subsequently became the Fellowship Program Director in 2016. In 2020, Kristin was humbled to return to the academic health complex of Loma Linda, as the Clinical Director of the Physician Assistant Program. Her responsibilities include leadership of the clinical coordinators and administrative assistants, project management, supporting the Program Director and Chair, and instilling the mission, value and ethics throughout the Program. 

Lauren Bolda received her Bachelor of Science degree in Health Science with a concentration in Pre-Physician Assistant from California Baptist University in 2014.  She obtained her Master’s degree in Physician Assistant Sciences in 2017 from Loma Linda University and has worked in the high acuity Urgent Care setting since graduation. She returned to Loma Linda in 2018 as part-time faculty and then transitioned the same year to full time faculty on both the Clinical and Didactic teams.  More recently, Lauren has made the transition to full-time Clinical Coordinator. Her duties are longitudinal, and involve coordination of CASPA, didactic and clinical courses, missions, and alumni relationships.  In addition, she serves as a coordinator for advanced clinical skills courses in both the didactic and clinical year.  She plans to pursue her doctorate degree in 2019. She currently is pursuing her doctorate degree.

William J. Wilson earned his Bachelor of Science from Jackson State University in 1999 and his Medical Doctorate from University of Kansas in 2005. He completed his Master of Physician Assistant Sciences degree in 2014 from Loma Linda University. In 2017, he was brought on board as department faculty. His primary responsibility is coordinating and teaching the Pharmacology courses offered during the didactic portion of the program. William also assists as needed with other courses taught during the didactic year.  He currently works full-time in Urgent Care and Occupational Medicine.

Lillian Luna received her Associate’s Degree in Business Administration in 2006 from San Joaquin Valley College. She obtained her Bachelor of Science Degree in Business Management in 2011 from University of Phoenix. She provides administrative support to the Department Chair and works with all teams to facilitate program development, progression, and functionality. Her responsibilities include accreditation, grant, marketing, and alumni affairs. Prior to joining the University, Lillian worked in academics and admissions.

Kena Shaddox joined the PA Department in 2010 and has been employed with the University since 1997.  Her primary duty is administrative support for the didactic portion of the program as well as provides overall administrative support to the faculty and staff. Prior to joining the university, Kena worked as a research assistant for 7 years on a double-blind study for Colgate toothpaste. The study culminated in the introduction of a new product, Colgate Total.

Valerie Mosqueda received her Associate’s Degree in Management Information Systems and in Cardiovascular Echosonography. She joined the PA Department in September of 2016 as the Administrative Clinical Assistant and has been employed within the Loma Linda Entities since 2010. Her current responsibilities include processing contracts and providing support to the senior students and the clinical team.

Sandra Bailey joined the PA Department in December of 2016 as the Administrative Secretary. Her primary responsibilities include CASPA, admissions, and departmental needs. She also provides support to both the didactic and clinical teams.