Find a Top Internist Near Me in San Antonio, TX – Book an Appointment Instantly

John Vizuete, MD, MPH, in San Antonio, is an expert and board-certified gastroenterologist with a cutting-edge and innovative approach to the field.

Dr. Vizuete completed his undergraduate studies at the University of Texas in Austin and received his medical degree from the University of Texas Health Science Center in San Antonio. He completed a master’s degree in public health at the University of Texas School of Public Health in Houston.

Dr. Vizuete went on to complete his residency in internal medicine and a fellowship in gastroenterology at the University of Texas Health Science Center. In 2018, he joined the Gastroenterology Clinic of San Antonio.

Dr. Vizuete is committed to providing his patients with individualized care and spends the time necessary to understand the root cause and effects of each symptom. He recognizes that gastrointestinal health is complex and that sometimes a symptom can either be part of a much larger condition or a complex spiritual and emotional issue.

He is devoted to building long-lasting relationships with his patients and always makes himself available to answer their questions. In fact, when you establish care with him, you’ll get Dr. Vizuete’s personal email address for quicker responses and more personal treatment.

Dr. Vizuete is excited about current trends in his field and always strives to offer top-of-the-line, innovative, and interdisciplinary treatment to all of his patients.

Michael Maloy, MD, believes that everyone deserves access to highly skilled medical practitioners in a setting designed for his patients’ comfort. Through his leadership role at Sigma Primary Care, Dr. Maloy provides unparalleled care, personalized to meet the needs of his patients in and around San Antonio, Texas.

Education has always been a central focus for Dr. Maloy. He began his studies at the University of Texas at San Antonio, earning his undergraduate degree in biology. He remained at UT San Antonio to complete his medical degree from the School of Medicine. 

Dr. Maloy completed his residency in internal medicine at the University of Texas Health Science Center-Regional Academic Health Center in Harlingen, Texas, where he then served as an assistant professor of medicine. 

He continues to seek out opportunities to expand his skills and knowledge through ongoing education. 

Dr. Maloy founded Sigma Primary Care in 2016. Over the years, the practice has become an invaluable resource to patients in the Central Texas region. They appreciate how the team takes time to get to know them and their unique set of health needs and goals. 

When not working with patients, Dr. Maloy can be found spending time with his family and enjoying time outdoors hiking in the San Antonio area. He also enjoys weight training as a means of staying healthy and active. 

Yasir Ahmed, MD, is a dual-board certified internal and family medicine specialist at MyHomeDoc Telehealth, where he offers online virtual doctor appointments to patients across Texas.

Dr. Ahmed is a compassionate and highly skilled medical doctor who is deeply committed to the well-being of his patients. With a strong background in internal and family medicine, he provides a comprehensive approach and ensures that his patients receive the highest quality care. 

Dr. Ahmed earned his Doctor of Medicine from Ross University School of Medicine in Miramar, Florida. After graduating, he completed his internal and family medicine residency at Eastern Virginia Medical School in Norfolk, Virginia, where he was chief resident. 

Dr. Ahmed’s dedication to staying up-to-date with the latest medical advancements and his emphasis on patient education make him a trusted healthcare provider in his community. His warm and empathetic approach to patient care has earned him the respect and gratitude of patients and colleagues. 

Dr. Ahmed is adept at managing a wide range of medical conditions and collaborating effectively with a patient-centric approach to ensure his patients feel comfortable and informed during their medical journey.

Caleigh Rodriguez, MD, is an internist and pediatrician at her private practice in New Braunfels, Texas. She cares for people of all ages in a friendly setting, improving the health and quality of life of patients and their families. She was born and raised in Texas and is committed to serving the community that molded her into the physician she is today.

Dr. Rodriguez is dual-trained in internal medicine and pediatrics. She has expertise in treating attention-deficit hyperactivity disorder (ADHD), autism, anxiety, and depression. She combines current medical and scientific knowledge with her personal experience, considering each patient's unique characteristics and circumstances when customizing their treatment plans.

Dr. Rodriguez enjoys building relationships with her patients as she cares for them from childhood into adulthood. She has a passion for women’s health and preventive primary care, working together with patients to achieve a common goal of living a healthy, fulfilling life.

She provides medically supervised weight loss, including weight loss injections and hormone replacement therapy if needed. She also provides intrauterine device (IUD) insertion for birth control, minor in-office procedures, women’s health care, well-child exams, and care for newborns and first-time moms

Dr. Rodriguez offers accessible, affordable, adaptable care that meets a patient’s unique needs without negative incentives linked to fee-for-service third-party pay billing. She offers same-day office visits, house calls, convenient telemedicine phone and video calls, emails, and text messages directly with her. 

Dr. Rodriguez accepts many insurance plans and has affordable membership plans, allowing patients to receive comprehensive, quality care without the hassle of dealing with insurance companies. She’s adaptable, offering quick care when time is of the essence, and you need prompt medical care. 

Dr. Rodriguez welcomes new and existing patients to her practice and looks forward to improving their health and well-being. 

Schedule an in-person, home-based, or telehealth appointment with Caleigh Rodriguez, MD, by phone or request one online today.

Dr. Ledbetter has been in clinical practice in San Antonio, Texas since moving here in 2000. His interest is in preventive medicine and holistic patient care. “With early detection, screening, and thoughtful guidance, I want to assist patients in living longer fuller lives.”

His experience, training and continued education provides an opportunity to find root causes of disease and restore the health of the patient.

Together with my 25+ years of experience and thorough questioning and listening to my patients I provide thought out quality care. I earned my medical doctor's degree from the University of Houston and completed my residency at Temple University in Philadelphia

Anisa Ruiz, PA-C is a board-certified Physician Associate with a diverse clinical background spanning family medicine, pediatric emergency care, and aesthetic medicine. She began her career in family medicine in 2019, providing comprehensive primary care to patients of all ages, with a strong emphasis on preventive medicine, chronic disease management, and patient education. From 2023 to 2025, Anisa worked at Christus Pediatric Emergency Department, where she developed advanced skills in acute care, rapid assessment, and compassionate treatment of children and adolescents. In 2023, she also expanded her practice into aesthetic medicine as a Physician Associate injector at The Skin Elite, combining clinical precision with an artistic eye to help patients look and feel their best. Her skill sets include optimizing: full face rejuvenation, collagen banking, facial balancing, lip augmentation, jawline contouring, and wrinkle prevention.

Anisa’s journey in medicine is a manifestation of God’s calling to blend healthcare, encouragement, and coaching into the realm of wellness. She consistently upholds the highest standards of care, ensuring every patient receives exceptional treatment, compassion, and peace of mind. Her passion for aesthetics stems from a profound sense of purpose — a belief that her work is more than a profession; it is a calling to help individuals achieve their aesthetic goals while enhancing their overall confidence and well-being.

Anisa graduated cum laude with a Bachelor of Science in Kinesiology from Texas A&M University and earned her Master of Physician Assistant Studies from The University of Texas Rio Grande Valley. She is a member of the Texas Academy of Physician Assistants and remains committed to lifelong learning and clinical excellence.

Outside of medicine, Anisa hosts a Podcast Private in Public, grows her relationship with Jesus, and enjoys traveling, salsa dancing, playing soccer and volleyball, and spending quality time with her family and friends.

Dr. Alina Sholar is blazing a trail in female-led health care businesses, owning and leading Serenity Medical Centers, Skin Science Soul, and Sage Practice Solutions. At Serenity Medical Centers, Sholar’s leadership style is centered on personal and professional development to give her team the resources to expand their careers. Through these businesses, and in honoring her own professional upbringing in biomedical sciences, medicine, surgery and business, she mentors young women in STEM and medicine and passes on her business acumen to women around the globe to build their own startups.

Dr. Sholar is the first physician in her family, but she knew even in her elementary years what she may become. At age 7, she predicted she would be a doctor- either for people or animals. After receiving a full-tuition merit scholarship from the Nelda C. and H.J. Lutcher Stark Foundation in Orange, she received her BS degree in Biomedical Sciences with Magna Cum Laude honors from the College of Veterinary Medicine at Texas A&M University in December 1994.

She started medical school at the University of Texas Medical Branch in 1995. During her medical education, it became apparent that a surgical specialty was her calling. She did surgical research in an esteemed scientific laboratory at University of Texas with her culminating in publication in a prominent scientific journal, Perfusion. She was there awarded the prestigious Janet M. Glasgow Memorial Award and Achievement Citation for Women in Medicine, along with other meritorious honors and accolades like the Robert Wood Johnson Fellowship Award in medicine. She graduated from University of Texas Medical Branch in 1999 then went on to her surgical residencies.

She completed a full five-year residency, including Chief Resident, in General Surgery at the University of Louisville in 2004, where she was awarded Best Resident Instructor and Mentor by the students of the University of Louisville School of Medicine. Dr. Sholar published in the Annals of Surgical Oncology during her General Surgery residency.

She continued her study of surgery by completing an additional residency in Plastic & Reconstructive Surgery at the University of Tennessee, serving as Chief Resident in 2006. Her plastic surgery training included not only aesthetic surgery, but also dermatology, non-invasive and laser aesthetic treatments, reconstruction related to cranio-facial surgery, microsurgery, hand surgery, burn surgery, and breast surgery. She received multiple awards and publications in research areas such as the efficacy of treatment at Tertiary Care Wound Centers and the advanced reconstructive techniques required after major facial trauma and infections in journals including the prestigious Annals of Plastic Surgery. During this time, she also had the privilege of spending time on mission trips in the Republic of Panama where she repaired cleft lip and palates and assisted in complex reconstructive craniofacial procedures for children. She was certified by the American Board of Plastic Surgery in 2008.

She has additionally received training and certification from the World Health Organization in Operational Planning regarding preparedness and response for COVID-19, as well as from Johns Hopkins for Epidemics & Outbreaks.

Serenity Medical Centers has a global service initiative as well as locally in the Austin and San Antonio communities.

Ayham Shneker, MD, is an established internist and the president of SA Premier Internal Medicine. He provides the highest quality of care to his patients in San Antonio, Texas.

He received his medical degree from Damascus University Faculty of Medicine and completed his residency at Texas Tech University.

Practicing medicine for over 20 years, Dr. Shneker is affiliated with many major hospitals and medical groups. He actively runs three clinics and one physical therapy center in the San Antonio area. His passion is centered around his patients’ healthcare, and his goal is to be their trusted and most reliable health provider. 

Dr. Shneker believes that patients’ health is about diagnostics and prescribing drugs. It also involves building long-lasting relationships with patients, taking time to understand their concerns, assessing their cases, following up with their progress, and effectively contributing to their overall wellbeing and liveliness.

He is currently accepting new and existing patients at his San Antonio, Texas, office.