​​Loma Vista Endocrinology 

      Dr. Westhoff  was in private practice in Endocrinology in Ventura County from 2002 until July 2025.   During this time she also served as the Endocrinology attending physician at Community Memorial Hospital teaching and supervising medical students and resident physicians in the field of Endocrinology.  In August 2025 she closed her private practice and joined the Endocrinology team at Sansum Clinic in Santa Barbara, CA.

      Dr. Westhoff is highly regarded in her field and has participated in clinical research, co-authored and published medical papers, and has spoken at numerous speaking engagements.  She has over 25 years of experience treating complex endocrine disorders, including performing over 6,000 ultrasound-guided thyroid biopsies. She is highly respected by her peers and known for an exceptional bedside manner.  She is bilingual in Spanish and delivers patient care with integrity, enthusiasm and genuine caring. 

     Dr. Westhoff attended UCLA for her undergraduate work and graduated magna cum laude with a Bachelors of Science degree in 1993.  She attended the University of Southern California (Keck) School of Medicine and graduated with Highest Distinction in 1997 in the top 5% of her class. She was awarded the Janet M. Glasgow Award given to the top two female medical students in the graduating class.   She did her residency in Internal Medicine at Harbor-UCLA Medical Center 1997-2000 and a combined fellowship in Adult and Pediatric Endocrinology at Harbor-UCLA from 2000-2002.  She is board certified in Endocrinology, Diabetes, and Metabolism.

​Tricia Westhoff-Pankratz, M.D.