NASHVILLE, Tenn. (AP) — One of Tennessee's largest pain management companies is closing multiple clinics throughout the state in July, leaving some patients searching for a new source of painkillers.

The Tennessean reports that Comprehensive Pain Specialist is closing at least 16 clinics in Tennessee and surrounding states but has not provided any explanation for the closures.

Addiction specialist Dr. Robert Shearer says the most serious ramifications of CPS clinic closures will be in rural areas, where fewer pain medication options are available. Shearer says some patients will transition to heroin.

Court records show the company, which is headquartered in Brentwood, has clinics in several states. Former CEO John Davis is accused of receiving $770,000 in kickbacks from another company and was indicted in April.

CPS hasn't responded to the newspaper's request for comment.

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Information from: The Tennessean, http://www.tennessean.com