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Dr. Machtinger graduated from the University of Pittsburgh School of Medicine. He completed residency training in Pediatrics and fellowship training in Allergy and Immunology at Stanford. He is board-certified by the American Boards of Pediatrics and of Allergy, Asthma, and Immunology. He is a fellow of the American Academy of Allergy, Asthma, and Immunology and the American College of Allergy, Asthma, and Immunology. A clinical assistant professor of Pediatrics at Stanford, he is a recipient of the Volunteer Clinical Faculty Award from the American Academy of Allergy, Asthma, and Immunology. Dr. Machtinger has contributed research articles to peer-reviewed journals and review chapters to allergy textbooks. He is a frequent lecturer to medical professionals and interested lay groups.

Dean Kardassakis, M.D., a native of San Francisco, is a board-certified allergist and an associate of the practice. He is also board-certified in internal medicine. He is a fellow of the American Academy of Allergy, Asthma, and Immunology and of the American College of Allergy, Asthma, and Immunology. He is a graduate of the University of Nevada School of Medicine.

Karen Machtinger LVN, a licensed vocational nurse, graduated from the Princeton Hospital School of Nursing in 1972. She has sixteen years experience as an allergy nurse

Gina Guzzo, RN is a native of San Mateo County. She has many years of experience in pediatric and adult nursing. She joined the practice in 2004.

Irma Bolick is an experienced medical assistant. She has worked in several allergy practices in the Bay Area joining our team in 1996.

Bonnie LeMar has been the practice receptionist and chief cook and bottle washer since 1998. She is the first person you will speak to on the telephone and when you enter the office.

Joyce McIntosh is our insurance and billing specialist and office manager. She has been with the practice since 1991.

Steven Machtinger, MD

Board-Certified San Mateo Allergist