Our Physicians

Dr. Connie H. Lin is an allergist and immunologist who practices in Torrance. She treats patients with allergic and immunodeficiency diseases, including eczema, allergic rhinitis, sinusitis, food allergy, drug allergy, hives, common variable immunodeficiency, specific antibody deficiency and hypogammaglobulinemia. She is board certified in Internal Medicine and Allergy and Immunology.

Dr. Catherine Oberg is a board-certified interventional pulmonologist who practices in Torrance. She performs a variety of diagnostic and therapeutic respiratory system procedures, and always works with patients to find the least invasive option that aligns with their goals of care. Her clinical interests include minimally invasive diagnostic procedures, bronchoscopic lung volume reduction and central airway obstruction.

Dr. Yen earned his B.E. (summa cum laude) at Vanderbilt University and his M.D. at the University of North Carolina at Chapel Hill. He completed his internship and residency at the Hospital of the University of Pennsylvania and Loma Linda University Children’s Hospital, and dual fellowship in Allergy/Immunology and Pediatric Rheumatology (autoimmune disease) at Ronald Reagan UCLA Medical Center. Dr. Yen is a board-certified allergist, immunologist, and pediatric rheumatologist who specializes in treating Adults and Children with allergic rhinitis, food and medication allergy, asthma, hives, angioedema, anaphylaxis, eczema, sinusitis, immunodeficiency diseases and related disorders. He has also received advanced training in treating Children with autoimmune diseases.