The disruptions being caused by the new law have been especially jolting for those who support the ideals of the health-care overhaul.

Marlys Dietrick, a 60-year-old artist from San Antonio, said she had high hopes that the new law would help many of her friends who are chefs, actors or photographers get insured. But she said they have been turned off by high premiums and deductibles and would rather pay the fine.

“I am one of those Democrats who wanted it to be better than this,” she said.

Her insurer, Humana, informed her that her plan was being canceled and that the rate for herself and her 21-year-old son for a plan compliant with the new law would rise from $300 to $705. On the federal Web site, she found a comparable plan for $623 a month. Because her annual income is about $80,000, she doesn’t qualify for subsidies.

A cheaper alternative on the federal exchange, she said, had a premium of $490 a month — but it was an HMO plan rather than the PPO plan she currently has. “I wouldn’t be able to go to the doctor I’ve been going to for years,” she said. “That is not a deal.”

And both the HMO and PPO exchange plans she examined had family deductibles of $12,700, compared with her current $7,000.

Robert Laszewski, an industry consultant, said he thinks the rise in rates was inevitable. The new law, he said, has resulted in an estimated 30 to 50 percent increase in baseline costs for insurers.

“We’ve got increased access for sick people and an increase in the span of benefits, so something’s got to give,” he said.