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Castroville Office

1014 Paris St, STE A, Castroville, TX 78009
(830) 538-9800 | FAX: (830) 538-9801

Medical Center Office

5282 Medical Dr #316, San Antonio, TX 78229
(210) 696-7500 | FAX: (210) 692-0248

Experience the San Antonio Oral & Maxillofacial Surgery Associates Difference

In 1967, Dr. James M. Duncan opened the doors of San Antonio Oral & Maxillofacial Surgery Associates (SAOMSA). For nearly five decades, he has mentored and partnered with a number of oral and maxillofacial surgeons new in the field both in our office and in his role as an associate clinical professor for the prestigious University of Texas Health Science Center – San Antonio dental program. With a history as rich and varied as that of our San Antonio community, SAOMSA is still proud to offer patients comfort, quality care, and exceptional oral and maxillofacial surgical treatments.


At SAOMSA, our goal is always to build upon the legacy left to us by Drs. Duncan and Westwood, now retired. They poured their hearts into offering superior care for patients, and Drs. James B. Mazock are dedicated to following in his footsteps. They complete hours of advanced training, specialty courses, and continuing education annually in order to stay on the cutting edge of the field and provide our patients with the quality of care they deserve and expect from the team at SAOMSA. As the one of the oldest, continually running oral surgery practices in South Texas, we have a legacy to continue, and we look forward to offering patients another 50 years of quality care.


This dedication to lifelong learning means we are the recognized oral and maxillofacial surgery experts not just in San Antonio, but in the state of Texas and the nation. Dr. Mazock has numerous degrees including an MT from the American Society of Clinical Pathologists and a BS in clinical laboratory sciences. He graduated cum laude from The University of Texas Health Science Center at San Antonio earning his doctor of dental surgery, and completed his training in oral and maxillofacial surgery at the Baylor College of Dentistry in Dallas.

Superior Care

We care about the degrees our dentists have and the legacy we’ve created for just one reason – it leads to superior care for our patients. Providing our San Antonio area patients with the level of care they deserve is our number one priority.

Advanced Anesthesia



Today’s top oral surgeons provide patients with a comfortable environment and appropriate anesthetics to ensure complete relaxation throughout any procedure. At San Antonio Oral and Maxillofacial Surgery Associates, your surgeon has intensive training in anesthesia and partakes in regular continuing education opportunities to stay up-to-date on the latest advances in their field. Oral surgeons’ anesthetic practices are also regularly evaluated in-office to maintain the absolute highest standards. Visit SAOMSA and relax knowing your oral and maxillofacial surgeon provides the safest and most effective anesthetic options available today.