Chung-Hsun Mark, Tsai M.D.Attending PhysicianInternal Medicine Education: University of Pittsburgh School of MedicineMain Office:562-634-6341 Optum Care 16415 S. Colorado Ave #101 Paramount, CA 90723 Clinic Intersts:internal medicine and primary care.Certifications: Board Certified in Internal Medicine Hospital Affiliations:Lakewood Regional Medical Center