The VA said at the time that no infections had been identified as having been transferred because of the dentist’s actions but that if any veterans are found to be infected the VA “will provide the necessary care and treatment without charge.”

The dentist was removed from patient care on Oct. 21, immediately after senior staff learned of the violation. The VA’s Clinical Episode Response Team launched an investigation that concluded Oct. 31.

Brahm said the VA spent four weeks reviewing patient medical records and organizing a hotline and clinic for testing and follow-up care if needed.

Brahm said the VA also has contacted the dental licensing board in Texas, where the dentist was licensed, as well as state and federal prosecutors who are reviewing the case for possible criminal charges.

The violation was initially reported by a dental assistant who was filling in for the dentist’s regular assistant, who Brahm said is also being investigated.

The Tomah medical center was at the center of an 18-month Congressional investigation that culminated in May with a top VA official acknowledging a “clear and inexcusable lack of leadership” was to blame for the deaths of at least two veterans who were treated there.

The investigation began after 2015 media reports detailed high levels of opioid prescription and a pervasive culture of intimidation and retaliation against employees who spoke out. Two top officials from Tomah — director Mario DeSanctis and medical chief of staff Dr. David Houlihan — were removed in the wake of that report, as were at least two other care providers.