Medical Professionals

All professionals at Z & Z Medical Associates, PA maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Read on to learn more about our staff's experience and training.

Alfred G. Zevallos, MD

Alfred G. Zevallos, MDDr. Zevallos received his medical degree at Texas Tech University Health Sciences Center in Lubbock, Texas. He completed his residency program in Internal Medicine at St. Paul Medical Center in Dallas, Texas.  Dr. Zevallos is Board Certified in Internal Medicine and is an active member of UT Southwestern Clinically Affiliated Physicians.


Berto M. Zamora, MD

Berto M. Zamora, MD

Dr. Zamora did his undergraduate school at The University of Havana, Cuba.  He then received his medical degree from The Autonomous University of Central America, School of Medicine in San Jose, Costa Rica. He completed his residency program in Internal Medicine at St. Paul Medical Center in Dallas, Texas.

Dr. Zamora is Board Certified in Internal Medicine.  He currently holds and Internal Medicine Clinical Associate Professor at UT Southwestern Medical Center.  He has been Principal Investigator in multiple clinical trials.

His special interests include Preventive Medicine, Hypertension, Diabetes, Hypercholesterolemia and Cardiovascular disease.