Dr. Michelle Cao is a board-certified, fellowship-trained pulmonologist, sleep medicine specialist, and intensivist (a doctor who cares for patients in intensive care units) with Stanford Health Care. She is a clinical professor in the Department of Medicine, Division of Pulmonary, Allergy & Critical Care Medicine at Stanford University School of Medicine. She completed a fellowship in sleep medicine at Stanford... Read More about Michelle Thi Cao, MD

Dr. Pradeep Kumar Siddappa is a board-certified, fellowship-trained gastroenterologist with Stanford Health Care. He is also a clinical assistant professor in the Department of Medicine, Division of Gastroenterology & Hepatology at Stanford University School of Medicine. Dr. Siddappa specializes in advanced endoscopy procedures to diagnose and treat gastrointestinal conditions. He focuses on pancreatic care, including acute and chronic pancreatitis, pancreatic... Read More about Pradeep Kumar Siddappa, MD

Michael P. Murphy, MD, MPH is a board certified Otolaryngology-Head and Neck Surgeon whose practice encompasses a full range of services for patients of all ages. Also board certified in Sleep Medicine, Dr. Murphy treats snoring, sleep apnea, and other sleep disorders. This dual board certification allows him to provide broad treatment options (surgical and non-surgical) for patients with sleep... Read More about Michael P. Murphy, MD, MPH

Dr. Timothy Scott is the senior partner of the Walnut Creek based ENT practice known as Diablo Valley ENT. This practice has been serving the Walnut Creek, Danville, and surrounding communities for over 40 years. Providing specialized care with a personal touch has been the goal of this practice. Dr. Scott is board certified in Otolaryngology Head and Neck Surgery... Read More about Timothy A. Scott, MD

Dr. Hsieh joined Diablo Valley ENT in 1999 after working at Kaiser Permanente for 6 years as the Assistant Chief in Head and Neck Surgery in Vallejo and Fairfield. Dr. Hsieh is board certified in Otolaryngology-Head & Neck Surgery and has special interest in rhinology and sinus surgery, pediatric otolaryngology, sleep apnea management, and head and neck oncology. Dr. Hsieh... Read More about Abraham G. Hsieh, MD

Dr. Gulla is a board-certified urologist with fellowship training in endourology. She is a clinical assistant professor in the Stanford University School of Medicine Department of Urology.For each patient, she develops a comprehensive, compassionate care plan customized to individual needs. Her goal is to help each patient achieve the best possible health and quality of life.Dr. Gulla performs the complete... Read More about Vanessa Gulla

John Gahagan, MD is a Clinical Assistant Professor of Surgery in the Section of Colorectal Surgery. He has training in advanced minimally invasive surgical techniques including robotic and laparoscopic surgery. He has authored several textbook chapters and original articles in peer-reviewed journals. His clinical practice is focused on the surgical treatment of colon and rectal cancers, inflammatory bowel disease (ulcerative... Read More about John V. Gahagan, MD, FACS, FASCRS

Dr. Marella is a fellowship-trained Gastroenterologist & Hepatologist. He published many peer-reviewed manuscripts and presented multiple abstracts at various national meetings. He is a member of the American College of Gastroenterology (ACG), American Society of Gastrointestinal Endoscopy (ASGE), American Association for the Study of Liver Diseases (AASLD) and the American Gastroenterological Association (AGA). Originally from the Midwest, Dr. Marella is... Read More about Hemnishil K. Marella, DO

Dr. Subhani is trained and experienced in all infectious disease including tuberculosis, staphylococcus aureus infections, and fungal infections of the lungs. She is especially interested in treating foot infections in diabetic patients (including bone infections) and managing patients living with HIV infection.

Dr. Lee is a board-certified, fellowship-trained pulmonologist and critical care physician with Stanford Health Care. He is also board-certified in internal medicine and sleep medicine. Dr. Lee has been providing care to the Tri-Valley community since 2001. Dr. Lee specializes in treating pulmonary issues such as asthma, obstructive pulmonary diseases including COPD, pulmonary nodules (tissue growths), lung cancer, pleural (chest... Read More about Kevin Lee, MD, FACP, FCCP

Dr. Jake Scott is a board-certified infectious diseases specialist. He provides general infectious diseases care in the inpatient and outpatient settings and his special interests include COVID-19, coccidiomycosis, multidrug-resistant organisms, HIV, and HIV pre-exposure prophylaxis. He works with patients from diverse backgrounds to provide compassionate, high-quality care aligned with their needs. Dr. Scott was born and raised in the Bay... Read More about Jake Scott

Dr. Orlando Quintero Cardona is a board-certified, fellowship-trained internist specializing in the diagnosis and treatment of infection complications in immunocompromised patients, such as those with bone marrow transplant, solid organ transplant, cancers and other forms of immunodeficiency. He is also clinical assistant professor in the Department of Medicine, Division of Infectious Diseases, at Stanford University School of Medicine. As a... Read More about Orlando Quintero, MD

Dr. Jean Bao is a board-certified, fellowship-trained general surgeon who specializes in breast surgical oncology. She is a clinical assistant professor of surgery at Stanford University School of Medicine. Dr. Bao’s clinical interests include treatment of men and women who have breast cancer, benign breast disease, genetic mutations, family history of breast cancer, or other breast cancer risk factors. Procedures... Read More about Jean Jingzhi Bao

Dr. Vanni Manthiram is board certified in General Surgery. She practices a broad range of general surgery including breast, colon, gall bladder, hernia, and minimally invasive surgery. She is also a member of several professional organizations, including the American College of Surgeons and the American Society of Breast Surgeons.

Dr. Nishkala Gutta is an Endocrinologist with offices in Pleasanton, San Ramon, and Castro Valley. Board certified in Internal medicine and board eligible for Endocrinology, Diabetes and Metabolism. She brings over a decade of primary care experience and a special interest in thyroid disorders and advanced diabetes technology, with a passion for using innovation to improve health outcomes. Dr. Gutta... Read More about Nishkala Gutta, MD

Dr. Lin is a fellowship-trained endocrine surgeon who specializes in surgery of the thyroid, parathyroid, and adrenal glands. After receiving her undergraduate degree from Stanford University, Dr. Lin pursued her medical and surgical training on the east coast, where she completed her residency in general surgery at Rutgers Robert Wood Johnson Medical School and fellowship in endocrine surgery at the... Read More about Dana Lin, MD

Dr. Sodavarapu is a fellowship-trained rheumatologist with Stanford Health Care. She is also a clinical assistant professor in the Department of Medicine, Division of Immunology and Rheumatology at Stanford University School of Medicine. Dr. Sodavarapu is board certified in internal medicine and obesity medicine.

The Digestive Health Center in Pleasanton provides specialists in gastroenterology and hepatology for issues ranging from abdominal pain and reflux to acute pancreatitis. Our focus is to enhance your comfort, recovery time, and overall quality of life. Accordingly, our team provides leading-edge care, supported by pioneering scientific research and collaboration with specialists throughout Stanford Health Care.