KerixHealth makes care simple, personal, and accessible. With same-day or next-day appointments, in person or virtual, our team supports your health needs — urgent, chronic, or preventive — every step of the way.
Dr. John is a father of 5 children, husband and a family physician. He grew up in Northern Virginia and has spent most of his life here. In his youth, he pursued athletics (wrestling, football, boxing and more�) and developed an interest in human physiology and philosophy. Following his undergraduate work at George Mason University (GMU) he completed a Master�s in Biology at GMU. Thereafter, he worked in the biotech industry for Human Genome Sciences in their Oncology division. This experience eventually led him to understand his true passion - helping others achieve a long and healthy life. After completing residency, he started Vantage Primary Care. A private practice that cared for patients admitted to Fairfax Hospital. During this time, he learned a lot including how health systems really operate and how healthcare consolidation harms the patient. Dr. John and Diana started Summit Direct Care as they believe a better approach to health was truly needed. One of the issues facing our society is over medication and lack of a root cause approach to health. The problem is few doctors have the time, incentive or knowledge to help patients reverse disease or build a strong health foundation. Summit Direct Care was founded so you can have a doctor with the time, knowledge and desire to help you craft a personalized plan to reverse and prevent disease. Dr. John works with his patients in a collaborative manner, to get to the root cause of their problem(s), then creates a detailed and personalized plan. He focuses his efforts on optimizing your health through lifestyle and reversing chronic disease whenever possible. He practices broad spectrum family medicine (care for all ages) and has a passion for musculoskeletal medicine, wellness/preventative health, lifestyle medicine and nutrition.
Dr. Mary is committed to a holistic approach to medicine. As an undergraduate at the University of Scranton, she took to heart the motto of �Cura Personalis,� or �care of the whole person,� and uses this as her approach to patients. Dr. Mary grew up in Fredericksburg, Virginia. Upon graduating with a bachelor�s degree in biology and international studies, she attended medical school at Loyola University Chicago Stritch School of Medicine while in the Navy Reserves. She then transitioned to active duty in the Navy and completed her Family Medicine residency at Naval Hospital Jacksonville in Florida. During this time, she found her passion in Lifestyle Medicine, an approach to medicine used to prevent and treat medical conditions through healthy life choices. After her residency, Dr. Mary was stationed at the Mountain Warfare Training Center in Bridgeport, California, where she completed her service in the Navy. After experiencing various medical facilities, she wanted to find a better environment to treat, educate, and empower patients adequately. Thus, she is excited to work at Summit Direct Care, where relationships can be developed with patients and help them work toward their healthiest selves. Outside of the office, you can typically find her training for endurance events (such as a triathlon or a multi-day bike trip) and running agility with her dog. She is excited to be back in Virginia and is happy to be exploring the Appalachians again.
Sarah received her Doctorate of Nursing Practice in Family Medicine at the University of Maryland. Sarah has a passion for holistic women�s health, restorative reproductive medicine, and all things hormones. She teaches the Marquette Method of NFP to women and couples, particularly those who are post-partum and/or breastfeeding. She is a member of the Marquette Method Professional Association and the International Institute for Restorative Reproductive Medicine. Sarah lives in Centreville, VA with her husband and two daughters.
Ryan is driven by a passion for providing comprehensive care. His approach to healthcare is holistic and collaborative. He believes in empowering patients to take an active role in their health, fostering a patient-centered environment where shared goals include improving wellness, preventing and managing disease, and enhancing quality of life. Ryan earned his Bachelor of Science in Nursing from Marymount University in 2016 and began his healthcare career as a trauma intensive care nurse at Fairfax Hospital. Building on this experience, Ryan pursued advanced education and obtained his Master of Science in Nursing from James Madison University in 2020, specializing as a Family Nurse Practitioner. A husband and father of three, Ryan shares a deep connection with his roots in Northern Virginia, where he grew up enjoying sports and outdoor activities. His athletic pursuits included football, baseball, track and field, and wrestling. Today, he continues to embrace the outdoors through hunting, fishing, camping, hiking, and canoeing, but his greatest joy comes from spending time with his wife and children. Faith and family remain the central pillars of his life. Before joining the Summit Direct Care team, Ryan worked for nearly five years as a family practitioner. While he valued his time in his previous practice, he became increasingly aware of the limitations posed by brief appointments and insurance hurdles, which often hindered optimal patient outcomes. At Summit, Ryan is excited to focus on delivering truly personalized care, free from these constraints, and building strong partnerships with his patients.
