Los Angeles

Geemee Chung, MD
Internal Medicine & Infectious Disease

Dr. Chung practices primary care internal medicine with a subspecialty in infectious diseases. Dr. Chung completed her internal medicine residency at Sinai Hospital, affiliated with John Hopkins, and went on to complete an infectious disease fellowship at UCLA before establishing herself in Los Angeles at Cedars-Sinai Medical Center.

Sarah Greene, MD
Pediatric Medicine

Dr. Greene established our Los Angeles pediatric practice, achieving our vision of a true family office. She received her bachelor’s degree from Northwestern University and completed medical school and pediatric residency at Vanderbilt University. Since moving to Southern California, Dr. Greene has cared for children in private practice, at Cedars-Sinai Medical Center, and as a faculty member at UCLA.

Colleen Ryan, MD
Family Medicine

Dr. Colleen Ryan completed medical school at Pennsylvania State University and a family medicine residency at the University of Colorado. She provided full-spectrum care and worked in hospital leadership as Chair of Medical Services during her 10 years in Boulder, CO. In 2015 she joined Cedars-Sinai in Los Angeles, where she held positions in the Department of Primary Care and Organization Advancement, served on the Board of Directors, and practiced concierge medicine within the Executive Health department. Dr. Ryan finds great joy in collaborating with her patients to help them achieve their goals through a personalized and holistic approach. She enjoys spending time with her family, practicing yoga, and getting outdoors to bike, ski, and surf.

Todd Spector, MD
Family Medicine

Dr. Spector graduated from Brown University and the Sackler School of Medicine in Tel Aviv before returning to Southern California for his residency training. After building a large group practice in Santa Monica and serving as a member of UCLA’s faculty, Dr. Spector joined Private Medical to apply evidence-based medicine in the context of personalized care.