John Muir Health Walnut Creek Medical Center
John Muir Health Concord Medical Center
San Ramon Regional Medical Center
Mark was drawn to family medicine for the relationship and connection with his patients. The passion he has for listening to and advocating for his patients is what drives his love of medicine. Mark is the co-founder of Diablo Family Physicians with his wife Dolores, with their mission being to treat patients like family and provide the best care possible for the community. Mark earned his MD from The Chicago Medical School (where he and Dolores met!) and completed his residency in family medicine at the UCLA School of Medicine affiliated program at Ventura County Medical Center. He is certified through the American Board of Family Medicine. When not caring for patients at the practice Mark can be found hanging out with his two boys and Dolores. If not with them he will be on Mount Diablo on his Mountain Bike! Special Medical Interests Pediatric and Adolescent care Diabetes, Hypertension, Lipid Disorders Exercise & Nutrition Preventive Health and Education Men’s Health Weight Loss
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: Finch University of Health Sciences/Chicago Medical School in Illinois
Residency: Ventura County Medical Center in California
John Muir Health Walnut Creek Medical Center
John Muir Health Concord Medical Center
San Ramon Regional Medical Center
