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Our doctors
Meet Dr. Puja Thakkar
Medical Director
Dr. Puja Thakkar is a native of the Bay Area and a passionate sleep medicine provider serving her patients in Danville and Fremont, California. Dr. Thakkar established the Golden Gate Sleep Centers to offer state-of-the-art facilities out of which to diagnose and treat conditions that prevent people from having a good night of sleep.
Meet Dr. John Ruddy
Dr. John Ruddy has many years of experience in sleep disorders medicine since completing his fellowship in Sleep Disorders Medicine from the Scripps Clinic and Research Foundation, in La Jolla California in 1987. He is a graduate of Georgetown University School of Medicine and completed his internal medicine residency in Denver Colorado.
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Meet Dr. Andrew Greenberg
Dr. Andrew McClintock Greenberg is originally from New York. He completed his internal medicine residency at Mt. Sinai Hospital in New York City and his pulmonary, critical care, and sleep medicine fellowship at the University of California at San Francisco in 2003. He went into private practice in 2003 and was a Sutter Health provider for over 15 years before joining Golden Gate Sleep Centers.
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Meet Dr. Rahamat Mansaray
Dr. Rahamat Mansaray is a board-certified pediatrician and sleep medicine specialist dedicated to helping patients achieve restful, restorative sleep. Growing up in the south suburbs of Chicago, she pursued her undergraduate education at the University of Illinois before completing her Pediatric Residency in West Michigan. She then advanced her expertise with a Sleep Medicine Fellowship at Case Western Reserve University in Cleveland, Ohio.
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Meet Dr. Dulip Ratnasoma
Dr. Dulip Ratnasoma is board-certified in Sleep Medicine, Internal Medicine, and Obesity Medicine. He completed his internal medicine residency at the University of Nevada, Las Vegas, and his fellowship in sleep medicine at the University of California, Los Angeles.
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