John Muir Health Walnut Creek Medical Center
John Muir Health Concord Medical Center
Nadine B. Hanna, MD, FACOG has been with Muir OB/Gyn since 2001. Dr. Hanna received her Doctor of Medicine from the Medical College of Pennsylvania and completed her residency at the University of California, Davis. She graduated from McGill University, Montreal, Canada with a Bachelor of Science degree in Biochemistry. Dr. Hanna is one of three doctors that perform deliveries and care for high and low risk pregnancies. She also provides comprehensive gynecologic care to all age groups including minimally invasive gynecological surgeries. Dr. Hanna believes in building a collaborative relationship with patients based on good communication and mutual respect. In her free time Dr. Hanna can be found at soccer games, music classes or gymnastics with her three young daughters.
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: Medical College of Pennsylvania in Philadelphia
Internship: University of Maryland in Baltimore
Residency: University of California Davis