Dr. Paul Chiu is the director and owner of Vanguard Interventional Pain Specialists in Alhambra, California. A board-certified anesthesiologist, specialized in chronic pain management, he also serves as the medical director for Pacific Ambulatory Surgery Center in Alhambra and as a staff pain physician for San Gabriel Valley Medical Hospital and Whittier Hospital Medical Center in Los Angeles.Our Practice‧Conditions‧Procedures‧Resources‧Contact Us‧FAQs.