DNA Services of America provides accurate, confidential, chain-of-custody DNA paternity testing accepted by California Superior Courts, including the family courts of Los Angeles, Orange, Riverside, and San Bernardino counties.
John Taddie, Ph.D. is Director of our Los Angeles and Orange County DNA testing center. Dr. Taddie has over 13 years of experience in DNA testing for paternity, family relationships, and human identification. He has supervised over 150,000 DNA paternity and family relationship tests, has reviewed over 45,000 individual DNA test cases, and has testified as a DNA expert in over 50 California civil and criminal court trials involving cases of child support, custody, probate, welfare fraud, immigration, sexual assault, incest, and homicide.
Dr. Taddie is a current member of AABB and a former appointed member of the AABB Relationship Testing Standards Program Unit, the team of experts that establishes AABB's internationally accepted Standards for Relationship Testing Laboratories. In this capacity, he was a contributing writer to the 6th and 7th Editions of the AABB's Standards for Relationship Testing Laboratories. Dr. Taddie received his B.S. in Microbiology from Penn State University in 1986, obtained his Ph.D. in Molecular Biology from Cornell University in 1992, and completed a postdoctoral research fellowship at the Salk Institute in 1995.
Dr. Taddie presents frequent lectures on DNA testing to legal groups, medical associations, and government agencies throughout Southern California. He has been a guest lecturer for USC School of Medicine, UC Irvine Medical Center, California State University, the American Red Cross, the Orange County Clinical Laboratory Management Association, and the California Welfare Fraud Investigators Association. Dr. Taddie has also been an invited speaker and educator for the Department of Child Support Services in over 40 California Counties, including Los Angeles, Orange, Riverside, San Bernardino, San Diego, and Imperial counties, and he has provided MCLE (Minimum Continuing Legal Education) on DNA testing to numerous local legal organizations, including the Beverly Hills Bar Association, the South Bay Bar Association, the West Orange County Bar Association, the Orange County Paralegal Association, and Legal Secretaries Incorporated.
Since 1997, Dr. Taddie has been helping clients resolve diverse, unique, and complex family relationship questions through DNA testing. He understands and appreciates that every situation is very personal, and very private. Please feel free to call and ask to speak to Dr. Taddie directly for a free confidential consultation.
You may download Dr. Taddie's resume by clicking on this link
Please contact us at:
1800 North Bush Street, Suite 200
Santa Ana, CA 92706
(714) 648-0468 - Phone (English)
(714) 648-0868 - Phone (Spanish)
(714) 648-0478 - Fax
Mon-Fri: 9am - 6pm
Sat-Sun: By Appointment
Evenings: By Appointment
Contact Orange CountyDirections:
We are located in Santa Ana at the corner of 18th and Bush Streets (one block northeast of 17th and Main). We are just off the 5 Freeway and easily accessible from the 22, 55, 57, 91 and 405 Freeways.
From the North: Take your favorite freeway to the 5-S. Take the Broadway/Main St. Exit, followed by the Main St. South Exit, in Santa Ana. Take a right onto N. Main St., go approximately ¼ mile, then turn left onto 20th St. Go one block and turn right onto N. Bush St. Go one more block and turn right into the parking lot of the Santa Ana Family Medical Center.
From the South: Take your favorite freeway to the 5-N. Take the 17th St. Exit, turn left onto 17th St., go approximately ¼ mile, then take a right onto N. Bush Street. Go one block, then turn left just past 18th St. into the parking lot of the Santa Ana Family Medical Center. We are on the 2nd floor of the medical center.
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