Dr. Sandra Lyden was arrested and booked into the Nueces County Jail on Tuesday evening, according to the Nueces County Sheriff's Office.
The former Nueces County chief deputy medical examiner has been charged with 21 counts, including seven counts of tampering with a government document; 13 counts of violating the medical practice act with financial harm, and one count of misrepresentation regarding entitlement to practice medicine.
Her bond amounts range from $25,000 to $50,000 per charge.
Lyden is accused of representing herself as a medical doctor while acting as deputy chief medical examiner. A Texas Rangers investigation has determined she did not have a valid license to practice medicine in Texas while she performed autopsies.
Her former supervisor at the ME's office also was arrested and booked Tuesday.
Lyden had previously been arrested in March for tampering with government records, and released on bond.
During a status hearing in March, her attorney stated she was seeking employment.
This is a developing story. Check back with KRIS 6 News for updates.