Dr. Diana Marquardt is a Internal Medicine,General Physician and Allergist/Immunologist in Balboa Park, SAN DIEGO and has an experience of 47 years in these fields. Dr. Diana Marquardt practices at Mid-City Community Clinic in Balboa Park, SAN DIEGO and Toni Young-Pen in Balboa Park, SAN DIEGO. She completed Medical School from Washington University in St. Louis School of Medicine in 1979,Residency in Internal Medicine from University of California – San Diego Medical Center in 1982 and Fellowship in Allergy and Immunology from University of California – San Diego Medical Center in 1984. Some of the services provided by the doctor are: Chronic diabetes,cough,Canker Sore,Thrush and Hyperkalemia etc.