COVID-19 NOTICE! - Due to the recent COVID-19 Pandemic we are primarily operating through Telemed/Video visits online.  You can contact our office via phone 951-303-6158 or email contact@drgisi.com.  We also encourage you to sign up on our patient portal via the link on this page or email us at back-office@drgisi.com for assistance. We also have links at the bottom of each page to order products from Xymogen or Metagenics. We are offering a 10% discount for each order

Office Hours

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday & Sunday
9:00am – 5:00 pm
8:00am – 5:00 pm
8:00am – 5:00 pm
8:00am – 5:00 pm
9:00am – 12:00pm
CLOSED
*Closed for lunch between 12:00 & 2:00 pm

Our Staff


We take great pride in our professional staff. Our clinical and administrative staff are eager to assist you and answer any questions you may have. Our employees participate regularly in programs of continuing education to maintain and improve their proficiency and to help your doctor provide the best in medical care.

Dr. Sylvia A. Gisi M.D.

Dr. Sylvia A. Gisi M.D. is very dedicated to her patients and looks forward to seeing them through their medical challenges. Dr. Gisi believes in utilizing nutritional supplements as a first line therapy, while realizing certain medications can also be used effectively to treat many diseases.

Medical Assistants:
  • Anita Velasquez, MA
  • Gizelle Gomez, MA

Dr. Sylvia A. Gisi

Dr. Sylvia A. Gisi M.D. is very dedicated to her patients and looks forward to seeing them through their medical challenges. Dr. Gisi believes in utilizing nutritional supplements as a first line therapy, while realizing certain medications can also be used effectively to treat many diseases.

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