Rep. Henry A. Waxman, D-Beverly Hills, and two other House members called for the congressional hearings to examine whether 1-800-GET-THIN ads properly disclose the dangers of the surgical procedure, the Los Angeles Times reported Friday.
The representatives also questioned the safety and long-term effectiveness of the Lap-Band, the device used in the surgery.
In a letter to chairman of the House Energy and Commerce Committee, Waxman said Congress should subpoena documents from 1-800-GET-THIN and Lap-Band manufacturer Allergan Inc.
"We believe the Committee should hold hearings to examine whether [Food and Drug Administration] device regulation has been ineffective in protecting the public from dangerous medical devices like the Lap-Band," Waxman and Reps. Diana DeGette, D-Colo. and John Dingell, D-Mich., said in the letter.
Since 2009, five patients have died after getting Lap-Band surgeries at 1-800-GET-THIN affiliated facilities, the newspaper said.
A spokeswoman for Allergan, of Irvine, Calif., said the device, a ring that is surgically implanted around the stomach to discourage overeating, is safe and effective, if "inserted by an experienced and qualified bariatric surgeon who offers the patient appropriate follow-up care."
In December, the FDA sent warning letters to 1-800-GET-THIN and some of its affiliated surgery centers, saying the ads were misleading and did not properly disclose the dangers of Lap-Band surgery.
Robert Silverman, president of 1-800-GET-THIN, said they responded to FDA concerns by adding a disclosure on its Web site that said Lap-Band procedures can result in death.