No good deed goes unpunished, especially for Dr. Terry Dubrow.

The A-list plastic surgeon and his lawyer are set to sit down with a scorned “Botched” patient who is demanding $3 million from him on Tuesday, an insider told Page Six.

We’re told the patient has threatened to go public with accusations that Dubrow performed faulty surgery on her for over two years unless he pays her millions to keep quiet.

According to the insider, the patient applied to go on Dubrow’s reality show about plastic surgery to correct her botched butt surgery and cleared required medical, psychological and criminal checks before beginning to film for the show.

Our source tells us that the patient had illegal silicone injections into her buttocks some time ago. After falling ill as a result of the injections, she visited a general surgeon, who removed over five pounds of foreign material from her buttocks. Her buttock muscles were destroyed as a result, making it a “classic ‘Botched’ case” for Dubrow, our source said.

According to our source, the Newport Beach, Calif.-based surgeon performed a unique surgery on the patient to get her about “85 percent” better before the patient “decided that she was unwilling to allow [producers] to reveal her [final result], saying that she’s not happy.”

Despite Dubrow allegedly explaining that the entire procedure might not work if he had to perform more surgery, the patient wanted to move forward. Dubrow was able to improve upon his previous surgery and the patient appeared to be happy with the results, our source says.

But the patient’s story was never aired because of her alleged non-compliance following the procedure.

After the procedure, she allegedly defied Dubrow’s orders and lay on her butt after surgery, which ultimately split her wound open. Dubrow and the “Botched” producers allegedly coordinated to get her to a wound care center immediately after she told them, but she refused to get it packed with gauze in order to heal it.

Our source says she finally gave in after Dubrow begged her to get attention for her wound, which was continuing to split.

The insider told us Dubrow got a phone call a few weeks later from a San Diego-based doctor about the patient, who was having severe pain in her body. The doctor claimed a fatty tumor had been found in the patient’s body, but Dubrow believed that the patient was being misdiagnosed.

The patient then traveled to Dubrow’s office in Newport Beach, where he discovered she had contracted an infection because she didn’t take out the gauze packing that the wound care center gave her.

Dubrow’s confrontation with the patient over the incident was filmed.

We’re told Dubrow heard from the patient a few days later because she was still in pain. He instructed her to go to the emergency room rather than his office because of traffic between San Diego and Newport Beach. She ended up spending weeks in the hospital because the infection grew and the emergency room allegedly had taken days to treat her effectively.

Once the patient was feeling better, we’re told she Skyped with Dubrow and producers. She attempted to confront him over what had happened before lawyering up and demanding money in exchange for not filing a lawsuit in open court despite signing an arbitration agreement to appear on the show.

She also allegedly threatened to claim “Botched” staff gave her alcohol postoperatively if Dubrow didn’t comply with her money demands.

When reached for comment, Dubrow told us, “Despite all the problems she may be trying to make for us, we are still here for her in the future if she ever wants to reach out to help her with her continuing problems.”