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Been receiving active cancer treatment for tumors or cancers of the blood
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Received an organ transplant and are taking medicines to suppress your immune system
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Received a stem cell transplant within the last 2 years or are taking medicine to suppress your immune system
- Moderate or severe primary immunodeficiency (such as DiGeorge syndrome or Wiskott-Aldrich syndrome)
- Advanced or untreated HIV/AIDS
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Active treatment with high-dose corticosteroids (i.e. — Prednisone, Dexamethasone) or other drugs that may suppress your immune response

MD, Board-Certified Internist, Concierge Medicine Physician
Dr. Guy Delorefice has been practicing in Sonoma County since 1999 as a board-certified internist. He earned a degree in Biology from St. Mary’s College of California, then completed his medical degree at Creighton University. While at Creighton, he launched medical clinics in third-world countries and became fluent in Spanish. His internship and internal medicine residency were completed at Providence St. Vincent’s Medical Center in Portland, Oregon. After finishing his training, he relocated to Sonoma County to be closer to home and family. Dr. Guy has built a reputation for exceptional patient care and has been voted by peers as a top physician in his specialty in consecutive years.
Outside medicine, he is deeply family-oriented — married to Rebecca, father to Lani and Capri, with a black lab named Hank. He’s passionate about the outdoors and spends time mountain biking, road biking, abalone diving, fishing, hunting, and skiing. He’s often seen biking around Sonoma with his family.