Our physicians and nurse practitioner are dedicated to building lasting relationships, listening to your concerns, and guiding you toward whole-person wellness. With expertise in primary care, medical weight loss, and preventive health, our team combines compassion with medical excellence to support you at every stage of life.
Dr. Juanita (Jenny) Huertas Sprute is a dedicated family physician with over 25 years of experience in providing compassionate, patient-centered care. Raised in Killeen, Texas, in a military family, Dr. Sprute developed a strong sense of service and commitment to others from a young age. She graduated from Baylor University with a Bachelor of Science in Biology before earning her medical degree from the University of Michigan Medical School in 1994.
After completing her Family Practice residency in Austin, Texas, in 1997—where she proudly served as Chief Resident during her final year—Dr. Sprute joined Jefferson Family Practice. For nearly three decades, she practiced traditional family medicine, building long-lasting relationships with her patients and their families. She continued to care for generations of patients until the practice’s closure in June 2025.
Dr. Sprute is especially proud of her two adult daughters. Laura, who lives in Austin with her husband, Chase, and their son, Charles Ignatius, and Hannah, who works for HEB Corporate and resides in San Antonio.
Now, Dr. Sprute is thrilled to partner with Dr. Alaina Hallmark in launching Genesis MD, a new practice dedicated to restoring the art of traditional family medicine. This innovative approach allows them to build deeper, more meaningful relationships with patients, guiding them on their health journeys using evidence-based care. Dr. Sprute is passionate about living the principles she teaches her patients and is committed to promoting healthier, longer, and more independent lives for herself and those she serves.
Dr. Alaina Hallmark is a dedicated family physician with more than 23 years of experience caring for individuals and families in the San Antonio community. Originally from Austin, Texas, she graduated from the University of Texas at Austin before attending medical school at the University of Texas Health Science Center at San Antonio. She completed her residency training at the Christus Santa Rosa Family Practice Residency Program.
Dr. Hallmark joined Jefferson Family Practice at the start of her career and has cherished the breadth of family medicine and the meaningful, long-term relationships she’s built with her patients. She has a special interest in lifestyle medicine and is passionate about how everyday habits influence long-term health and well-being.
Outside of her practice, Dr. Hallmark enjoys staying active through hiking, skiing, and spending quality time outdoors. Her greatest joy is time spent with her two children and her family.
Cassie Rogers, MSN, FNP-C, is a Family Nurse Practitioner with a heart for helping others live healthier, more confident lives. She began her nursing journey at Texas Tech University, where she earned her BSN, then spent 14 years caring for moms and babies in Labor and Delivery. In 2019, she completed her Master of Science in Nursing at Texas State University and went on to serve women and families in OBGYN care for three years.
After taking some time off to focus on her growing family, Cassie joined Genesis MD, where she now specializes in weight management and GLP-1 therapies. She loves walking alongside patients as they take steps toward their goals and believes that support and encouragement are just as important as the science behind care.
Cassie lives in Bulverde, Texas with her husband and their six kids. Life is busy and full in the best way! Her oldest is a freshman at Texas A&M studying to be a nurse practitioner, while her youngest keeps her on her toes as a 3rd grader. When she’s not at work, you can usually find her cheering at a game, helping with homework or soaking up time with her big family.