Dr. Omar Ata graduated with honors from the University of Illinois-Chicago in 1976 with a Bachelor degree in Biology. He continued on to the University of Illinois College of Dentistry where he graduated in 1981. Dr. Omar Ata remained at the University of Illinois where he taught comprehensive dental care for over three years. Dr. Omar Ata completed a comprehensive orthodontic training program utilizing the straight wire technique from 1987-1989 with Dr. Bob Gerety.

In 1996, Dr. Ata was the first to utilize CAD-CAM technology to mill computerized dental restorations in Central Florida. He has been providing state of the art comprehensive dental care for Osceola County and South Orlando since 1984.

Dr. Ata has been a member of the American Dental Association since 1981, the Florida Dental Association since 1984 and is currently a member of the Central Florida District Dental Association. Dr. Omar Ata currently maintains two locations employing three general dentists, a part time orthodontist and twenty-two employees.


Dr. Joseph A. Ata attended Nova Southeastern University as an undergraduate from 2001-2004, with a major in Biology.  He enrolled at Nova Southeastern University College of Dental Medicine in 2004.

From May 2008 to March 2009 Dr. Joseph Ata provided his services to a free joint venture clinic between Broward County and Nova Southeastern University. The clinic offered free dental care for recipients of the Broward Country Ryan White Grant and BCPP Grant.

Dr. Joseph Ata has taken over 400 hours of continuing education through the Medical College of Georgia on the topic of dental implants. He is an Associate Fellow in the American Academy of Implant Dentistry. An associate fellow must undergo rigerous testing to be certified by the board of the AAID.  Dr. Joseph Ata is also a member of the American Dental Association, the Florida Dental Association and the Orlando Implant Study Group.


Dr Jill E. Ata graduated with a Bachelors of Science in Nutrition and Public Health from the University of North Carolina at Chapel Hill in 2005.

She attended Nova Southeastern University, College of Dental Medicine from 2005-2009 where she earned her Doctorate of Dental Medicine degree.

In 2010, Dr. Jill E. Ata attended a Straight Wire Orthodontic training program, which included 132 hours of continuing education. The program focused on using a combination of functional appliances, mainly in mixed dentition and fixed orthodontic braces in permanent dentition.

Dr. Jill E. Ata is currently a member of the American Dental Association, Florida Dental Association and the Central Florida Dental Association. She is also an Associate member of the International Association of Orthodontics. She has been in private practice at Ata Dental Associates since 2009.


Dr. Ireni Mikhail graduated from Nova Southeastern University College of Dental Medicine in May of 2014. Shortly after she began her general practice residency at New York Methodist Hospital in Brooklyn, NY and completed the program in June of 2015.

During her dental education, she constantly challenged herself, striving to broaden her knowledge and perfect her dental skills. She has developed proficiency in many fields of dentistry including restorative, fixed and removable prosthetics, rotary endodontics, surgical extractions, basic orthodontics and pediatrics. She has the special skill sets to treat emergency dental and medical situations as well as managing patients with complex medical histories.