Mehra Hosseini M.D. grew up in the Bay Area. Dr. Hosseini graduated Phi Beta Kappa from UC-Santa Cruz with Honors in Biology and Psychology. He received his M.D. from New York Medical College and went on to UC-Davis for Internal Medicine residency and Gastroenterology & Hepatology fellowship. Dr. Hosseini has published articles in the American Journal of Gastroenterology. Dr. Hosseini holds memberships in the American Gastroenterological Association, American Society for Gastrointestinal Endoscopy and the American College of Gastroenterology. He is Board certified and has been practicing gastroenterology, hepatology since 1999. Mehra Hosseini’s gastroenterology interests include inflammatory bowel disease. He has done over 15,000 procedures with patient safety and comfort in mind. Dr. Hosseini has been Medical Director of the Walnut Creek Endoscopy Center, East Bay Endoscopy Center and Board member of Brentwood Surgery Center. Dr.Hosseini also sees patients at the University of California Berkeley, Tang Health Center. He is on staff at Alta Bates Hospital, John Muir Hospital, San Ramon Region Medical Center and Alameda Hospital. Dr. Hosseini is a Board member of California Integrated Physician Practice Association (CIPPA) whose core mission is to promote high quality, cost efficient, integrated care delivered by independent medical practices in California. Dr.Hosseini is involved with the Berkeley community donating his time to “Walk-with-a-Doc” uniting the community towards health and wellness. He is an avid soccer player and skier, always searching for the best snow, who enjoys skiing with the family. Dr. Hosseini who speaks Farsi and Spanish is dedicated to the well being and comfort of his patients. He has been featured in Oakland Magazine as part of a Best Doctors, Best Practices article. Dr. Hosseini also participates in Operation Access, which makes its possible to for uninsured and underserved people to receive specialty care free of charge through a medical volunteer network in the Bay Area.
Dr. Audrey "Lisa" Arzamendi is double board-certified in internal medicine and endocrinology. Since 2012, she has specialized in diabetes, obesity and metabolism, thyroid disease (including Hashimoto's and Graves'), polycystic ovary syndrome (PCOS) and sex hormone disorders, adrenal and pituitary dysfunction, osteoporosis, parathyroid/calcium disorders, and thyroid and parathyroid nodules and cancers. She is highly trained in ultrasound-guided fine-needle aspiration (FNA) biopsy of the thyroid (99% diagnostic rate).
Dr. Arzamendi is committed to safe and established medical treatments, and prides herself on staying informed about emerging therapies and research-supported non-prescription options. She is experienced working with all forms of brand-name and generic thyroid medications, and as a type 1 diabetic herself, has first-hand knowledge of nearly all available prescription and technological diabetic treatments, to best support patients in selecting their optimal diabetes treatment regimens.
Dr. Arzamendi graduated with honors from Stanford University, with a BA in Human Biology and a concentration in Health & Human Performance. She attended UC San Diego School of Medicine (receiving a federal NIH National Cancer Institute fellowship), and completed her internal medicine residency at Kaiser Pemanente’s Santa Clara Medical Center. Her endocrinology training was completed at UC Davis Medical Center. She previously practiced in California's South Bay before relocating to open her practice in Walnut Creek in 2020. Dr. Arzamendi was a Stanford varsity athlete and still enjoys running, hiking, tennis, rowing, and other outdoor activities. She loves spending time with her husband and many pets, and looks forward to being your doctor!
Medical School: New York Medical College
Residency: Internal Medicine – UC Davis
Fellowship: Gastroenterology & Hepatology – UC Davis