Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Nicholas Martinez, MD, is a board-certified gastroenterologist providing complete care for patients at Gastroenterology Clinic of San Antonio. Dr. Martinez found his inspiration for pursuing a career in medicine after observing the health problems suffered by close family members when he was growing up. His experiences still inspire him as a doctor, and his patient, comforting manner reassures people who come to him for care, making them feel like family.
A native of San Antonio, Dr. Martinez speaks fluent Spanish as well as English. He earned his bachelor’s degree from Baylor University in Waco, Texas, before studying medicine at the University of Texas Health Science Center at San Antonio. He then stayed at UT Health San Antonio for his internal medicine residency and gastroenterology fellowship. During his training, Dr. Martinez received a humanitarian award for his outstanding patient care and exemplary bedside manner.
Dr. Martinez has a particular interest in inflammatory bowel disease (IBD), gastroesophageal reflux disease (GERD), and colon cancer prevention. He’s published many scholarly articles in leading medical journals, and regularly presents his research findings at national academic conferences. Dr. Martinez holds certification from the American Board of Internal Medicine, and has a decade of experience helping patients with a range of gastrointestinal disorders.
“I had a great experience with Dr. Nicholas Martinez and staff. He is thorough and explains the treatment plan very well. Very professional and was a pleasant experience for me.”
Dr. Nicholas Martinez, MD
Gastroenterologist
8550 Datapoint Drive
Suite 200
San Antonio, TX 78229
5.0(1)
Dr. John Vizuete, MD
Gastroenterologist 4.6 mi
8550 Datapoint Drive
Suite 200
San Antonio, TX 78229
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.
Allison Harrington Sirakos, MD, is a skilled board certified gastroenterologist providing expert care in San Antonio, Texas, at the Gastroenterology Clinic of San Antonio. Dr. Sirakos manages all gastrointestinal disorders but has expertise in colon cancer screening , liver disease, acid reflux, irritable bowel syndrome (IBS) and other disorders of the gut-brain interaction.
After earning her Doctor of Medicine at the University of Texas Southwestern Medical Center in Dallas, Texas, Dr. Sirakos relocated to New York, completing her internal medicine residency at New York University (NYU) Grossman School of Medicine in Manhattan.
Dr. Sirakos returned to Texas to finish her gastroenterology fellowship training at the University of Texas Health Science Center at San Antonio. During her final year of training, she served as the chief of education.
Dr. Sirakos is board certified in internal medicine by the American Board of Internal Medicine (ABIM) and holds a license to practice medicine in Texas.
When it comes to patient care, Dr. Sirakos takes an integrative approach, combining traditional medical care with innovative techniques and complementary therapies with the overall goal of improving quality of life.
Board-certified gastroenterologist Muhammad Naeem, MD, leads the team at Advanced Gastroenterology Associates of SA. At the warm, inviting practice in San Antonio, Texas, Dr. Naeem provides expert diagnosis and treatment for a variety of gastroenterology conditions.
Dr. Naeem graduated from Allama Iqbal Medical College, University Of Health Sciences Lahore medical school in 1984. He completed his internship and residency in internal medicine at St. Louis University School of Medicine in Missouri. Dr. Naeem rounded out his medical studies with a fellowship in gastroenterology from the University of Texas Health Science Center at San Antonio.
Following his postgraduate training, Dr. Naeem worked as a staff gastroenterologist at several practices throughout California and Texas. Since 2017, he has worked at Advanced Gastroenterology Associates of SA where he offers state-of-the-art advanced endoscopy services and immune system enhancement to optimize the treatment of digestive disorders.
Dr. Naeem is board-certified in gastroenterology and internal medicine by the American Board of Internal Medicine, and is also a Fellow of the American College of Physicians. He maintains memberships with the American College of Gastroenterology, the Texas Society of Gastrointestinal Endoscopy, the Bexar County Medical Society, and the Texas Medical Association.
Throughout his career, Dr. Naeem has presented at several national meetings on various topics in the field of gastroenterology. He has also participated in research projects and contributed to publications related to gastroenterology, immunology, virology, and more.
Board-certified gastroenterologist Muhammad Naeem, MD, leads the team at Advanced Gastroenterology Associates of SA. At the warm, inviting practice in San Antonio, Texas, Dr. Naeem provides expert diagnosis and treatment for a variety of gastroenterology conditions.
Dr. Naeem graduated from Allama Iqbal Medical College, University Of Health Sciences Lahore medical school in 1984. He completed his internship and residency in internal medicine at St. Louis University School of Medicine in Missouri. Dr. Naeem rounded out his medical studies with a fellowship in gastroenterology from the University of Texas Health Science Center at San Antonio.
Following his postgraduate training, Dr. Naeem worked as a staff gastroenterologist at several practices throughout California and Texas. Since 2017, he has worked at Advanced Gastroenterology Associates of SA where he offers state-of-the-art advanced endoscopy services and immune system enhancement to optimize the treatment of digestive disorders.
Dr. Naeem is board-certified in gastroenterology and internal medicine by the American Board of Internal Medicine, and is also a Fellow of the American College of Physicians. He maintains memberships with the American College of Gastroenterology, the Texas Society of Gastrointestinal Endoscopy, the Bexar County Medical Society, and the Texas Medical Association.
Throughout his career, Dr. Naeem has presented at several national meetings on various topics in the field of gastroenterology. He has also participated in research projects and contributed to publications related to gastroenterology, immunology, virology, and more.
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