Alexander N. Greiner, M.D.

Dr. Greiner is a board-certified specialist in Allergy and Immunology and serves as the director of Allergy & Asthma Medical Group & Research Center. Since starting here in 2003, he has participated in hundreds of research studies focusing on allergic diseases including asthma, rhinitis, food allergies, urticaria and sinusitis. In addition to research, he sees patients in clinic and educates residents and fellows while having published several scholarly articles and abstracts in various medical journals and textbooks.


  • Director and Principal Investigator, Allergy & Asthma Medical Group and Research Center
  • Assistant Clinical Professor, Department of Medicine, University of California, San Diego School of Medicine


  • John F. Aloia award for academic achievement, scholarship and clinical excellence

Fun Facts!

  • Outside the office, Dr. Greiner loves to be active, cook and connect with friends and family.