Nuance Communications Inc., a Burlington company known for its Dragon speech recognition software, said Monday that it has made another acquisition --- this time of J.A. Thomas and Associates, a provider of doctor-oriented, clinical documentation improvement programs for the health care industry.

Financial details of the transaction were not disclosed.

Based in Atlanta, J.A. Thomas and Associates, or JATA, manages programs for more than 500 hospitals. Privately held JATA has about 100 employees.

The combination of JATA with Nuance’s Dragon Medical 360 solutions will provides a more accurate and complete clinical document at the point-of-care, Nuance said in a press release. More than 450,000 clinicians are using a Dragon Medical 360 solution for clinical documentation, Nuance added.

Nuance recently said that it has agreed to buy Quantim, the health information management business of QuadraMed, a provider of information technology services to the health care industry. A few weeks earlier, Nuance announced plans to buy Ditech Networks Inc. of California, which offers such voice technology services as PhoneTag voicemail-to-text services. Nuance said PhoneTag will enhance its voice-to-text business.

JATA is the fifth company or business that Nuance has either purchased or agreed to purchase so far in 2012.