Dr. Mercado graduated from University of Wisconsin School of Medicine & Public Health in 1990 and has been in practice for 27 years. He completed a residency at Kaiser Permanente Medical Center. He currently practices at Kaiser Permanente Baldwin Park Medical Center and is affiliated with Kaiser Permanente Downey Medical Center. Dr. Mercado accepts multiple insurance plans including Medicare, Kaiser Permanente and Medicaid. In addition to English, Dr. Mercado's practice supports these languages: Spanish and Korean.