About Us

Dr. Roy Gonzalez, Jr. and his team wholeheartedly believe that orthodontic treatment is one of the most important investments you can make for your overall health and self-esteem. We aim to provide the highest quality orthodontic treatment to patients throughout the greater San Antonio area, including families and individuals in Alamo Heights, Castle Hills, Crownhill Park, and Olmos Park. Also, we know that choosing the best orthodontist for your needs is crucial. Alamo City Orthodontics is eager to introduce you to the finest orthodontic treatments and thoughtful, patient-centered care.

Meet Our Doctors

The mind and heart behind your care.

Dr. Roy Gonzalez, Jr.

Board Certified Orthodontist

After receiving his dental degree from the University of Texas at San Antonio Dental School, Dr. Roy Gonzalez, Jr. completed his orthodontic training at Eastman Dental Center in Rochester, New York, where he was awarded a Fellowship for his research on children with facial birth defects, as well as his Master of Science degree. He has been a practicing orthodontist for more than 25 years.

Dr. Roy Gonzalez, Jr.

Board Certified Orthodontist

Dr. Amini is an Orthodontic specialist and board-certified by the American Board of Orthodontists ensuring he provides the highest quality of care with the latest technology. Dr. Amini treats every single patient that walks into our practice. Unlike multi-doctor corporate-owned practices where doctors are constantly changing and patients might see 2-3 Orthodontists throughout their active treatment, Dr. Amini believes in accountability, standing behind his work, and building a name in the community. You are in good care before, during, and after your Orthodontic treatment.

Dr. Roy Gonzalez, Jr.

Board Certified Orthodontist

After receiving his dental degree from the University of Texas at San Antonio Dental School, Dr. Roy Gonzalez, Jr. completed his orthodontic training at Eastman Dental Center in Rochester, New York, where he was awarded a Fellowship for his research on children with facial birth defects, as well as his Master of Science degree. He has been a practicing orthodontist for more than 25 years.

Dr. Nikolas Amini, DDS

Board Certified Orthodontist

Dr. Amini is an Orthodontic specialist and board-certified by the American Board of Orthodontists ensuring he provides the highest quality of care with the latest technology. Dr. Amini treats every single patient that walks into our practice. Unlike multi-doctor corporate-owned practices where doctors are constantly changing and patients might see 2-3 Orthodontists throughout their active treatment, Dr. Amini believes in accountability, standing behind his work, and building a name in the community. You are in good care before, during, and after your Orthodontic treatment.

Dr. Diana Villarreal

Board Certified Orthodontist

Dr. Diana Villarreal was raised in Monterrey, Mexico. She has called San Antonio, Texas home since 2015. Her academic journey started at the Universidad Autonoma de Nuevo León where she earned her DDS degree. After graduating from dental school, she completed a Master in Orthodontics in Monterrey, Mexico.
 
Driven for the passion of specialization Dr. Villarreal pursued further education and she completed an Internship in Advanced Orthodontics at UT Health San Antonio.  Dr. Villarreal further Specialized in Orthodontics at Case Western Reserve University in Cleveland Ohio where she obtained her Certificate in Orthodontics and a Master in Science of Dentistry. During her residency , Dr. Villarreal completed the American Board of Orthodontics written examination. 
 
She is an active member of the American Association of Orthodontists, the Great Lakes Association of Orthodontists, the Cleveland Society of Orthodontists, and the Southwestern Association of Orthodontists  in Southwestern society of orthodontists. 
 
Outside the office, Dr. Villarreal finds joy in spending time with family and her furry companions. Whether spending quality time with her son and with her niece and nephew or with her dogs Coco and Chanel. Dr. Villarreal enjoys spending time with friends, cooking, traveling, and singing.

Comfort & Amenities

We deliver the best possible orthodontic treatment and dental services for our patients. Plus, we’ve cultivated several unique advantages at Alamo City Orthodontics:

Free Consultations

Expert, Board Certified Orthodontist

Advanced Technology

In-House Laboratory

Insurance Friendly

Flexible Financing Options

Conveniently Located

Emergency Appointments

Experience the Alamo City Orthodontics difference and schedule a risk-free consultation as a first step to improving your health. Feel free to call us at (210) 344-9295 with any questions. We can’t wait to hear from you and look forward to helping you achieve a beautiful and healthy smile!

Directions To The Office

  • Get on US-281 N in San Antonio from Broadway and E Basse Rd
  • Take I-410 W to I- 410 Access Rd/NW Loop 410/NW Loop 410 Acc Rd in Castle Hills.
  • Take exit 19A from I-410 W
  • Continue on I- 410 Access Rd/NW Loop 410/NW Loop 410 Acc Rd to your destination
  • Destination will be on the right
  • Head southwest on West Ave toward FM1535 N
  • Turn left at the 1st cross street onto FM1535 S
  • Slight left to stay on FM1535 S
  • Turn left onto I- 410 Access Rd/NW Loop 410 Acc Rd
  • Keep right to stay on I- 410 Access Rd/NW Loop 410 Acc Rd, follow signs for Farm-To-Marketroad 2696/Blanco Rd
  • Turn right
  • Turn right
  • Destination will be on the left
  • Take Coronet St and McCullough Ave to I- 410 Access Rd/NW Loop 410
  • Drive from I-410 W and I- 410 Access Rd/NW Loop 410/NW Loop 410 Acc Rd to Castle Hills
  • Turn right
  • Turn left
  • Destination will be on the right
  • Head southwest on E Hermosa Dr toward Hillside Dr
  • Drive from Jackson Keller Rd and Blanco Rd to San Antonio
  • Drive to your destination in Castle Hills
  • Turn left
  • Turn right
  • Turn right
  • Turn left at the 1st cross street
  • Turn right
  • Sharp left
  • Destination will be on the left