Dr. 90210 tells UsMagazine.com he would "never" have performed 10 procedures on Heidi Montag in just one day.
"I would never have done more than three or four," the TV doc (real name: Robert Rey) told Us at the Red Cross Red Tie Affair Honoring Jada Pinkett Smith in Santa Monica Saturday.
"What worries me is the commentary she is making to young girls," added Dr. Rey, who has a 9-year-old daughter, Sydney. "My young girl looks up to her and likes her. What message is she sending to young girls?"
Dr. Rey doesn't slam her surgeon Dr. Frank Ryan. "The issue of too many procedures in the operating room have [been debated] and forth, but he is a great surgeon -- that's not the issue."
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Admits Dr. Rey of Montag, 23, who is not legally allowed to get any more surgeries, "What she does is her decision. That's the beauty of America. It's a free country."
On Friday, a number of plastic surgeons told Us that it's not "emotionally healthy" for Montag - who unveiled her post-surgery bikini bod a week ago -- to undergo so many surgeries.
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New Jersey-based Dr. Lyle M. Beck also warned Us that Montag will have "significant drooping of the breasts" as she ages.
Snapped back Spencer Pratt on Twitter, "You must be JWOWW's doctor... Heidi ain't JWOWW."