Medical Providers
![]() Dr. Lido Chen, MD |
Physician Dr. Lido Chen, M.D. is a board certified specialist in Anesthesiology and Pain Management. As an expert in the field of pain management, Dr. Chen has been a guest speaker at professional conferences, and has also served as an associate professor at UCI. Dr. Chen has been in private practice since 1991. |
![]() Christine Fritz, PA-C |
Physician Assistant After working as a microbiologist at a pharmaceutical company, Christine decided to change careers. "I prefer working and helping others, working in a lab just isn't right for me." Christine graduated as Physician Assistant from Western University of Health Science, Pomona. With a background in psychiatry and orthopedics, the majority of her work experience has been in the field of Pain Management since early 2001. "Having a family member with chronic pain has helped me better understand the many facets of suffering. I greatly enjoy the reward of helping improve people's quality of life." |
![]() Donna Muresan, PA-C |
Physician Assistant Donna graduated from Loma Linda University and has previous experience working in the pharmacy and the ER. She joined the office in 2007. She is a dedicated and caring professional who possesses good patient care skills. She has a baby girl named Olivia and is involved in the youth ministry at the church she attends. |
![]() Nancy Vanni, RN |
Registered Nurse Nancy grew up and graduated from nursing school in Ohio. After moving to California in 1972, she worked at South Coast Medical Center until starting in Pain management in 1987. Nancy has worked with Dr. Chen since 1991. She has two daughters and 2 grandsons. She is kind, gentle and caring. "I love the diversity of pain management" |








