Hormone Replacement Therapy LA provides excellent hormone replacement therapy to reduce lingering illnesses to improve people's health. To ensure you receive the top-notch care you need, we make sure you undergo extensive laboratory testing to evaluate your blood and hormone concentrations. With a broad range of knowledge, Dr. David Nazarian has held hospitalist and emergency department positions. He has had considerable training in medicine, including in nutritional and vitamin shortages, hormone replacement therapy, and enhancing health in general.