Dr. Simin Siddiq is an internist in Fremont, California and is affiliated with multiple hospitals in the area, including Washington Hospital-Fremont and Regional Medical Center of San Jose. She received her medical degree from Kabul University Faculty of Medicine and has been in practice for more than 20 years. Dr. Simin Siddiq has expertise in treating hypertension & high blood pressure, sleep apnea, diabetes, among other conditions - see all areas of expertise. Dr. Simin Siddiq accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.