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Dr. Ron Ostrom, DO, Medical Director

Dr. Ronald Ostrom is an Emergency Medicine physician in the County of Kern. He is affiliated with multiple hospitals in the area, including Bakersfield Heart Hospital, Mercy Hospitals of Bakersfield, as well as the Medical Director for Hall Ambulance. Dr. Ostrom received his medical degree from the College of Osteopathic Medicine of the Pacific and has been in practice for 20 years. He is one of 5 providers, as well as the Medical Director of the West Side Family health Care Facility. Dr. Ostrom resides in Bakersfield with his wife and 2 children.


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Heather Bosma, Family Nurse Practitioner-Certified

Heather Bosma obtained a bachelor of science in nursing from Fresno State in 2005. She worked as a pediatric nurse for several years at Valley Children’s Hospital in Madera and Cottage Children’s Hospital in Santa Barbara. After receiving her master of science in nursing and school nurse credential from California State University Bakersfield in 2010, she worked as the school nurse for Taft City Schools and Taft High School. She received her Family Nurse Practitioner certificate from Western University of Health Sciences in 2013. Heather is dedicated to providing comprehensive health care and promoting healthy choices for individuals and the community.


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Elizabeth White, MSN, RN, Family Nurse Practitioner-Certified

Beth is a Family Nurse Practitioner and Board Certified by the American Association of Nurse Practitioners. Born and raised in Bakersfield, CA;. she began her nursing career in 2011, working as a Registered Nurse in the Intensive Care Unit. Beth holds both a Bachelor’s Degree and Master’s Degree in Nursing from California State University, Bakersfield.

Beth is dedicated to serving the residents of West Kern County. She is qualified to diagnose and treat a wide array of conditions across the entire lifespan and believes in working collaboratively with each individual to achieve their best possible state of health.


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Abundio Castillo, MSN, RN, PHN, Family Nurse Practitioner-Certified

Abundio Castillo was born in Mexico and moved to the United States in 1993. In Mexico, he studied Business administration, but always wanted to work in the medical field. During his career as RN he held many positions from staff nurse to director and manager of the emergency room at dignity hospitals in Bakersfield. Abundio moved to Bakersfield about 13 years ago, and has been working to serve the Kern County community and he found out that a lot of people lack the medical care attention, therefore, to better serve our community, he went back to school to become a Family Nurse Practitioner. He graduated in 2018 from Charles R. Drew University School of Medicine and Science. Since then, and has been working at Memorial Hospital ER, Priority Urgent Care and currently at West side Family Health Care  in Taft. Abundio is bilingual in Spanish and English. He feels much rewarded to be able to help our Kern county community. Abundio is happily married and has 4 children. 

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Dorian Reed, Physician Assistant-Certified 

Dorian Reed has been a practicing Certified Physician (PA-C) Assistant since 2005, he specializes in Acute Care, Emergency and Sports Medicine. Although Dorian is from the San Diego area, he has practiced in Kern County since 2015. Dorian graduated from Stanford School of Medicine in 2004.  Before becoming a PA-C Dorian served in the US Navy as a Corpsman/Medic for 5 years active duty, then served in the US Coast Guard as a Corpsman/Medic for an additional 3 years. 



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Ronald Gavilan, MD, Family Practice Physician-Certified

Ronald Gavilan, comes to West Side Family Health Care from the Rio Bravo Family Residency Program in Bakersfield, CA where he just completed his residency as the Chief Resident. He attended Medical School in Santiago de Cuba, and did a residency in Family Medicine as well in Radiology. He practiced as radiologist and family medicine for several years in Cuba, Guatemala, and Guyana.  When he first came over to the United States, he worked for some time as a medical sonographer in Reproductive Medicine, Rosalind Franklin University Health System. Dr. Gavilan specializes in full spectrum primary care, with a special interest in Prenatal Care, Women's Health, and Point-of-Care Ultrasound. He is fluent in Spanish.  Dr. Gavilan is married with 1 daughter, and enjoys cooking, traveling, and spending time with family and friends in his free time.

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 Eric Walker, Doctor of Chiropractic 

Dr. Eric Walker is a licensed and Board-Certified Doctor of Chiropractic since 2008. He also has a Certified Chiropractic Sports Physician (CCSP®). Dr. received his BS in Kinesiology (Pre-Physical therapy) from San Diego State University and his Doctor of Chiropractic degree from Palmer College of Chiropractic West in San Jose, CA. He is also currently a co-owner of Active Life Chiropractic in Bakersfield, CA. Dr. Walker resides in Bakersfield with his wife and 3 children.

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Jason Sabol, Doctor of Chiropractic 

Dr. Jason Sabol is a licensed and board-certified Chiropractor in California and has been practicing 23+ years. He earned his chiropractic degree at Palmer West Chiropractic College. He is a Bakersfield native who resides in Bakersfield with his wife and 2 children. His years of experience has allowed him to treat injuries and conditions of patients with great success through chiropractic care.