Family Practice

Dr. Vizcarra joined MacGregor in 2019 and we are so glad to have her!  Originally from Mexico, she attended medical school at the Universidad Autonoma of Coahuila in Torreon, Coahuila, Mexico, then completed her medical training in Philadelphia, Pennsylvania.  A residency in Family Medicine at Drexel University was followed by a fellowship in Geriatrics at Thomas Jefferson University.Dr. Vizcarra’s interest in education landed her a position with Texas Tech University Health Science Center Permian Basin Campus in Odessa, Texas. She started as an Assistant Professor, and directed a Family Medicine Residency program as well as a Geriatrics program, leading to an Associate Professor status before moving to San Antonio. In San Antonio, she began a solo practice and later joined a Palliative Medicine Program.Dr. Vizcarra loves primary and preventative care, with a passion for Geriatrics and addressing health disparities.  She is an active member of the Texas Association of Family Medicine, The Texas Medical Association, and the American Geriatrics Society, and is a Fellow of the American Association of Family Medicine.Her favorite hobbies are reading, traveling, and running.  She loves family gatherings and spending time with family and friends.

Internal Medicine

Dr. Rodriguez graduated in 1994 from Ponce School of Medicine where he was inducted into the Alpha Omega Alpha Honor Medical Society. He completed a residency in Internal Medicine at Washington University Medical Center in St. Louis, Missouri, and later became Board Certified in Internal Medicine.  He moved to San Antonio in 1994 and became part of the MacGregor Medical family. He and his wife, a dentist, have three lovely children. Dr. Rodriguez has special interests managing diabetic, obese and hypertensive patients as well as patients with allergic rhinitis.  He has been featured yearly as one of San Antonio’s best internists in San Antonio Magazine’s “Best Doctors”. Dr. Rodriguez is fluent in Spanish and speaks some French and Italian.

Internal Medicine

After graduating from Columbia University College of Physicians and Surgeons in New York, Dr. Oliver trained at a Columbia affiliate, St. Lukes-Roosevelt Hospital in Internal Medicine. He worked as a supervisory physician for Montefiore Medical Center in New York before and after voluntary service with the U.S. Air Force, and spent a great deal of time caring for patients with AIDS. His military career included a tour at Hellenikon Air Base in Athens, Greece. He moved to San Antonio in 1994 to practice with MacGregor Medical Association. He is board-certified by the American Board of Internal Medicine.

Family Practice

The University of Antioquia Medical School in Medellin, Colombia granted an M.D. degree to Dr. Roldan. He spent a year in an Infectious Disease research fellowship,  then completed a residency at Baylor College of Medicine in Houston, including a stint as a Chief Resident. He followed with a fellowship in  Palliative Care at the University of Texas Health Science Center – San Antonio.  He is board certified by the American Board of Family Practice, and practices family medicine as well as palliative care.

Internal Medicine

Dr. Sanchez graduated from Central del Caribe University School of Medicine in Puerto Rico. He completed a residency in Internal Medicine at the University of Texas Health Science Center here in San Antonio prior to joining MacGregor Medical Association in 1994. He played a leading role in the establishment of MacGregor Medical Center of San Antonio in 2000, and became its first President. He is board certified in internal medicine and a Fellow of the American Board of Internal Medicine. Married with two lovely daughters, he is fluent in Spanish as well as English.

Internal Medicine

Dr. Senger was born and raised in St. Louis (which will be evident on your first visit.) He met his wife at Baylor University. He went to medical school at St. Louis University School of Medicine, then quickly returned to Texas for his residency in Internal Medicine at the University of Texas Health Science Center at San Antonio. He was appointed to a year as Chief Resident. In 2005 he received an appoinment as a Clinical Associate Professor at the Health Science Center.