John Muir Health Walnut Creek Medical Center
Dr. Bernens philosophy of practicing medicine is building better healthcare together. Dr. Bernens feels that in order to be a healer, he needs to develop a healthy doctor-patient relationship where he believes in you and you believe in him. Dr. Bernens medical school training was in Ohio at Boonshoft School of Medicine, Wright State University, and internal medicine residency training at UC Davis Medical Center in Sacramento, California. Dr. Bernens has been practicing Internal Medicine for over 21 years. Dr. Bernens is different type of primary care doctor. Dr. Bernens takes the time to care about each and every patient. Dr. Bernens offers longer appointments of 30 to 60 minutes to listen to your health questions and concerns. He wants to give his patients a more caring approach and more empathy to provide a highly personalized approach to your medical care. I will demonstrate that you are heard and that your concerns and health needs are met to the very best of my ability. Patients describe me as a very thorough and a caring primary care doctor. I look forward to meeting you.
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!